UNITED STATES

                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C. 20549

                            _______________________

                                  FORM 8-K/A

                              AMENDMENT NO. 1 TO
                                CURRENT REPORT


                      Pursuant to Section 13 or 15(d) of
                      the Securities Exchange Act of 1934

                            _______________________


                 Date of Report
                 (Date of earliest
                 event reported):   January 1, 2002





Commission         Name of Registrant, State of Incorporation,                                              IRS Employer
File Number        Address of Principal Executive Offices and Telephone Number                     Identification Number
- -----------        -----------------------------------------------------------                     ---------------------
                                                                                                            
1-9894             ALLIANT ENERGY CORPORATION                                                                 39-1380265
                   (a Wisconsin corporation)
                   222 West Washington Avenue
                   Madison, Wisconsin 53703
                   Telephone (608) 252-3311

0-4117-1           INTERSTATE POWER AND LIGHT COMPANY                                                         42-0331370
                   (an Iowa corporation)
                   Alliant Energy Tower
                   Cedar Rapids, Iowa 52401
                   Telephone (319) 398-4411

                   IES Utilities Inc.
                   ------------------
                   (Former name of Interstate Power and Light Company)



This combined Form 8-K/A is separately filed by Alliant Energy Corporation
and Interstate Power and Light Company.



The undersigned registrants hereby amend Item 7 of their Current
Report on Form 8-K dated January 1, 2002 to provide in its entirety as
follows:

Item 7.    Financial Statements and Exhibits.
- ------     ---------------------------------

           (a)   Financial Statements of the Business Acquired.
                 ---------------------------------------------

           Historical financial statements of IPC required by this Item 7 are
           as follows:




  Index to Financial Statements
                                                                                               Page Number
                                                                                               -----------
                                                                                                
  Report of Independent Public Accountants                                                          3
  Statement of Income for the Year Ended December 31, 2000                                          4
  Balance Sheet as of December 31, 2000                                                             5
  Statement of Cash Flows for the Year Ended December 31, 2000                                      7
  Statement of Capitalization as of December 31, 2000                                               8
  Statement of Changes in Common Equity for the Year Ended December 31, 2000                        9
  Notes to Financial Statements                                                                     10
  Consolidated Statements of Income (Unaudited) for the Nine Months Ended
       September 30, 2001 and 2000                                                                  20
  Consolidated Balance Sheet (Unaudited) as of September 30, 2001                                   21
  Consolidated Statements of Cash Flows (Unaudited) for the Nine Months Ended
       September 30, 2001 and 2000                                                                  23
  Notes to Consolidated Financial Statements (Unaudited)                                            24



                                       2


           REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Shareowners of Interstate Power Company:

We   have  audited   the   accompanying   balance   sheet  and
statement  of  capitalization  of   Interstate  Power  Company
(a  Delaware  corporation)   as of  December 31, 2000, and the
related  statement of income, cash flows and changes in common
equity  for  the period  ended     December  31,  2000.  These
financial     statements   are  the   responsibility   of  the
Company's   management.  Our responsibility  is to  express an
opinion on these financial statements based on  our audit.

We  conducted   our  audit  in   accordance   with    auditing
standards  generally  accepted  in the  United  States.  Those
standards  require  that we plan  and  perform  the  audit  to
obtain  reasonable   assurance  about  whether  the  financial
statements  are  free  of  material  misstatement.   An  audit
includes examining,  on a test basis,  evidence supporting the
amounts  and  disclosures  in  the  financial  statements.  An
audit also includes  assessing the accounting  principles used
and  significant  estimates  made  by  management,  as well as
evaluating the overall financial  statement  presentation.  We
believe  that our audit  provides a  reasonable  basis for our
opinion.

In our opinion,  the  financial  statements  referred to above
present  fairly,  in  all  material  respects,  the  financial
position  of  Interstate  Power  Company  as of  December  31,
2000,  and the  results  of   its  operations  and  its   cash
flows for the period ended  December 31, 2000,  in  conformity
with accounting  principles  generally  accepted in the United
States.




/s/ ARTHUR ANDERSEN LLP
- -----------------------
ARTHUR ANDERSEN LLP


Milwaukee, Wisconsin
January 29, 2001
(except with respect to the matters discussed in
Note 1(a) as to which the date is January 1, 2002)

                                       3



                                   INTERSTATE POWER COMPANY
                                     STATEMENT OF INCOME
                             FOR THE YEAR ENDED DECEMBER 31, 2000
                                        (in thousands)



                                                                                        
Operating revenues:
  Electric utility                                                                        $304,386
  Gas utility                                                                               53,615
                                                                                 ------------------
                                                                                           358,001
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Operating expenses:
  Electric production fuels                                                                 57,049
  Purchased power                                                                           64,304
  Cost of gas sold                                                                          35,251
  Other operation and maintenance                                                           92,693
  Depreciation and amortization                                                             35,407
  Taxes other than income taxes                                                             16,475
                                                                                 ------------------
                                                                                           301,179
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Operating income                                                                            56,822
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Interest expense and other:
  Interest expense                                                                          16,272
  Allowance for funds used during construction                                                (824)
  Miscellaneous, net                                                                        (2,300)
                                                                                 ------------------
                                                                                            13,148
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Income before income taxes                                                                  43,674
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Income taxes                                                                                14,970
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Net income                                                                                  28,704
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Preferred dividend requirements                                                              2,489
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Earnings available for common stock                                                        $26,215
                                                                                 ==================

- ---------------------------------------------------------------------------------------------------

The accompanying Notes to Financial Statements are an integral part of this statement.


                                       4



                                     INTERSTATE POWER COMPANY
                                          BALANCE SHEET
                                        DECEMBER 31, 2000
                                          (in thousands)


ASSETS
- ---------------------------------------------------------------------------------------------------
                                                                                         
Property, plant and equipment:
  Utility -
    Plant in service -
      Electric                                                                            $941,400
      Gas                                                                                   78,984
      Common                                                                                14,374
                                                                                 ------------------
                                                                                         1,034,758
    Less - Accumulated depreciation                                                        523,057
                                                                                 ------------------
                                                                                           511,701
    Construction work in progress                                                           13,371
                                                                                 ------------------
                                                                                           525,072
  Other property, plant and equipment                                                          276
                                                                                 ------------------
                                                                                           525,348
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Current assets:
  Cash and temporary cash investments                                                        2,871
  Accounts receivable:
    Customer, less allowance for doubtful accounts of $356                                  50,658
    Associated companies                                                                     1,758
    Other                                                                                    1,955
  Income tax refunds receivable                                                              5,161
  Production fuel, at average cost                                                          16,349
  Materials and supplies, at average cost                                                    5,973
  Gas stored underground, at average cost                                                    5,210
  Adjustment clause balances                                                                 3,670
  Regulatory assets                                                                         10,803
  Prepayments and other                                                                      2,422
                                                                                 ------------------
                                                                                           106,830
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Investments                                                                                  7,193
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Other assets:
  Regulatory assets                                                                         50,704
  Deferred charges and other                                                                15,672
                                                                                 ------------------
                                                                                            66,376
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Total assets                                                                              $705,747
                                                                                 ==================

- ---------------------------------------------------------------------------------------------------

The accompanying Notes to Financial Statements are an integral part of this statement.



                                       5



                                     INTERSTATE POWER COMPANY
                                     BALANCE SHEET (Continued)
                                        DECEMBER 31, 2000
                                         (in thousands)


CAPITALIZATION AND LIABILITIES
- ---------------------------------------------------------------------------------------------------
                                                                                          
Capitalization (See Statement of Capitalization):
  Common stock                                                                             $34,221
  Additional paid-in capital                                                               108,690
  Retained earnings                                                                         86,058
                                                                                 ------------------
    Total common equity                                                                    228,969
  Cumulative preferred stock, not mandatorily redeemable                                    10,819
  Cumulative preferred stock, mandatorily redeemable                                        24,687
  Long-term debt                                                                           170,401
                                                                                 ------------------
                                                                                           434,876
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Current liabilities:
  Notes payable to associated companies                                                     68,218
  Accounts payable                                                                          22,717
  Accounts payable to associated companies                                                  12,236
  Accrued interest                                                                           2,666
  Accrued taxes                                                                             13,934
  Other                                                                                      9,643
                                                                                 ------------------
                                                                                           129,414
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Other long-term liabilities and deferred credits:
  Accumulated deferred income taxes                                                         93,548
  Accumulated deferred investment tax credits                                               12,829
  Environmental liabilities                                                                 14,380
  Pension and other benefit obligations                                                      8,191
  Other                                                                                     12,509
                                                                                 ------------------
                                                                                           141,457
                                                                                 ------------------

- ---------------------------------------------------------------------------------------------------

Total capitalization and liabilities                                                      $705,747
                                                                                 ==================

- ---------------------------------------------------------------------------------------------------

The accompanying Notes to Financial Statements are an integral part of this statement.


                                       6



                                       INTERSTATE POWER COMPANY
                                       STATEMENT OF CASH FLOWS
                                FOR THE YEAR ENDED DECEMBER 31, 2000
                                           (in thousands)

- ------------------------------------------------------------------------------------------------------------
                                                                                                   
Cash flows from operating activities:
  Net income                                                                                        $28,704
  Adjustments to reconcile net income to net cash flows
  from operating activities:
    Depreciation and amortization                                                                    35,407
    Amortization of deferred energy efficiency expenditures                                          11,290
    Deferred tax benefits and investment tax credits                                                 (1,233)
    Other                                                                                               754
  Other changes in assets and liabilities:
    Accounts receivable                                                                             (15,769)
    Gas stored underground                                                                           (2,145)
    Accounts payable                                                                                 11,963
    Benefit obligations and other                                                                   (12,213)
                                                                                           -----------------
       Net cash flows from operating activities                                                      56,758
                                                                                           -----------------

- ------------------------------------------------------------------------------------------------------------

Cash flows from financing activities:
    Common stock dividends declared                                                                 (21,706)
    Preferred stock dividends                                                                        (2,489)
    Net change in short-term borrowings                                                              29,020
    Other                                                                                                59
                                                                                           -----------------
       Net cash flows from financing activities                                                       4,884
                                                                                           -----------------

- ------------------------------------------------------------------------------------------------------------

Cash flows used for investing activities:
    Utility construction expenditures                                                               (50,637)
    Other                                                                                           (11,679)
                                                                                           -----------------
       Net cash flows used for investing activities                                                 (62,316)
                                                                                           -----------------

- ------------------------------------------------------------------------------------------------------------

Net decrease in cash and temporary cash investments                                                    (674)
                                                                                           -----------------

- ------------------------------------------------------------------------------------------------------------

Cash and temporary cash investments at beginning of period                                            3,545
                                                                                           -----------------

- ------------------------------------------------------------------------------------------------------------

Cash and temporary cash investments at end of period                                                 $2,871
                                                                                           =================

- ------------------------------------------------------------------------------------------------------------

Supplemental cash flows information:
    Cash paid during the period for:
       Interest                                                                                     $13,362
                                                                                           =================
       Income taxes                                                                                 $21,999
                                                                                           =================

- ------------------------------------------------------------------------------------------------------------

The accompanying Notes to Financial Statements are an integral part of this statement.


                                        7




                                     INTERSTATE POWER COMPANY
                                    STATEMENT OF CAPITALIZATION
                                        DECEMBER 31, 2000
                                (in thousands, except share amounts)

                                                                                          
Common equity:
  Common stock - $3.50 par value - authorized 30,000,000 shares;
    9,777,432 shares outstanding                                                            $34,221
  Additional paid-in capital                                                                108,690
  Retained earnings                                                                          86,058
                                                                                 -------------------
                                                                                            228,969
                                                                                 -------------------
- ----------------------------------------------------------------------------------------------------
Cumulative preferred stock:
   Par/Stated       Authorized        Shares                         Mandatory
      Value           Shares        Outstanding       Series         Redemption
      -----           ------        -----------       ------         ----------
       $50               *            216,381      4.36% - 7.76%         No                  10,819
       $50               *            545,000          6.40%             Yes **              27,250
                                                                                 -------------------
                                                                                             38,069
    Less:  unamortized expenses                                                              (2,563)
                                                                                 -------------------
                                                                                             35,506
                                                                                 -------------------
*    2,000,000 authorized shares in total
**   $53.20 mandatory redemption price
- ----------------------------------------------------------------------------------------------------
Long-term debt:
    First Mortgage Bonds:
      8% series, due 2007                                                                    25,000
      8-5/8% series, due 2021                                                                25,000
      7-5/8% series, due 2023                                                                94,000
                                                                                 -------------------
                                                                                            144,000
    Pollution Control Revenue Bonds:
      5.75%, due 2003                                                                         1,000
      6.25%, due 2009                                                                         1,000
      6.30%, due 2010                                                                         5,600
      6.35%, due 2012                                                                         5,650
      Variable/fixed rate series 1998 (4.30% through 2003), due 2005 to 2008                  4,950
      Variable/fixed rate series 1999 (4.05% through 2004), due 2010                          3,250
      Variable/fixed rate series 1999 (4.20% through 2004), due 2013                          7,700
                                                                                 -------------------
                                                                                             29,150
                                                                                 -------------------
                                                                                            173,150
                                                                                 -------------------
  Less:
    Unamortized debt premium and (discount), net                                             (2,749)
                                                                                 -------------------
                                                                                            170,401
                                                                                 -------------------
- ----------------------------------------------------------------------------------------------------
Total capitalization                                                                       $434,876
                                                                                 ===================
- ----------------------------------------------------------------------------------------------------

The accompanying Notes to Financial Statements are an integral part of this statement.


                                       8




                                                    INTERSTATE POWER COMPANY
                                              STATEMENT OF CHANGES IN COMMON EQUITY

                                                                                                           Accumulated
                                                                            Additional                        Other          Total
                                                                 Common       Paid-In        Retained     Comprehensive      Common
                                                                 Stock        Capital        Earnings     Income (Loss)      Equity
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                       (in thousands)
                                                                                                               
2000:
Beginning balance                                                  $34,221     $108,748      $81,549           $ -         $224,518

 Comprehensive income:
  Earnings available for common stock                                                         26,215                         26,215
  Other comprehensive income (loss):
    Unrealized gains (losses) on derivatives qualified as hedges:
      Unrealized holding gains arising during period due to
         cumulative effect of a change in accounting principle,
            net of tax of $2                                                                                     3                3
      Other unrealized holding losses arising during period,
         net of tax of $2                                                                                       (3)              (3)
                                                                                                         --------------  -----------
    Net unrealized gains (losses) on qualifying derivatives                                                      -              -
                                                                                                         --------------  -----------
   Total comprehensive income                                                                                                26,215

 Common stock dividends                                                                      (21,706)                       (21,706)
 Common stock issued                                                                (58)                                        (58)
                                                               ------------  ------------- ------------  --------------  -----------
Ending balance                                                     $34,221     $108,690      $86,058           $ -         $228,969
                                                               ============  ============= ============  ==============  ===========

The accompanying Notes to Financial Statements are an integral part of this statement.

                                       9


                           INTERSTATE POWER COMPANY
                           ------------------------
                         NOTES TO FINANCIAL STATEMENTS
                         -----------------------------

(1)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
(a)  General - The financial statements include the accounts of Interstate
Power Company (IPC), which is a subsidiary of Alliant Energy Corporation
(Alliant Energy).  IPC is engaged principally in the generation,
transmission, distribution and sale of electric energy and the purchase,
distribution, transportation and sale of natural gas in Iowa, Minnesota and
Illinois.

On March 15,  2000,  the boards of  directors of IESU and IPC approved a merger
agreement  (as  amended on November 29, 2000) for IPC to merge with and into
IESU (the  "Agreement").  The merger of IPC with and into IESU was  approved by
their  respective  shareowners  in April 2001 and by the SEC in  October  2001.
The  merger  was  effective  January  1, 2002  and  IESU  changed  its name to
Interstate  Power and Light  Company.  Each share of IPC common
stock  outstanding  was cancelled  without payment and each share of IPC
preferred stock outstanding was cancelled and  converted  into the right to
receive  one  share  of a new  class  of IESU Class  A  preferred  stock  with
substantially identical designations, rights and  preferences  as  the
previously outstanding IPC  preferred   stock. IPC  and  IESU were  both
wholly-owned operating subsidiaries  of  Alliant   Energy.  As  such,  the
transaction  was accounted for as a common  control  merger.

The financial statements are prepared in conformity with accounting
principles generally accepted in the United States, which give recognition to
the rate making and accounting practices of the Federal Energy Regulatory
Commission (FERC) and state commissions having regulatory jurisdiction.

The preparation of the financial statements requires management to make
estimates and assumptions that affect: a) the reported amounts of assets and
liabilities and the disclosure of contingent assets and liabilities at the
date of the financial statements; and b) the reported amounts of revenues and
expenses during the reporting period.  Actual results could differ from those
estimates.

(b)  Regulation - IPC is subject to regulation by FERC, the Iowa
Utilities Board (IUB), the Minnesota Public Utilities Commission (MPUC) and
the Illinois Commerce Commission.

(c)  Regulatory Assets - IPC is subject to the provisions of Statement of
Financial Accounting Standards (SFAS) 71, "Accounting for the Effects of
Certain Types of Regulation," which provides that rate-regulated public
utilities record certain costs and credits allowed in the rate making process
in different periods than for non-regulated entities.  These are deferred as
regulatory assets or accrued as regulatory liabilities and are recognized in
the Statement of Income at the time they are reflected in rates.  At December
31, 2000, regulatory assets of $61.5 million were comprised of the following
items (in millions):

Tax-related (Note 1(d))                            $31.9
Environmental liabilities (Note 11(d))              14.7
Energy efficiency program costs                      9.2
Other                                                5.7
                                                   ------
                                                   $61.5
                                                   ======

If a portion of IPC's operations becomes no longer subject to the provisions
of SFAS 71 as a result of competitive restructuring or otherwise, a
write-down of related regulatory assets would be required, unless some form
of transition cost recovery is established by the appropriate regulatory body
that would meet the requirements under generally accepted accounting
principles for continued accounting as regulatory assets during such recovery
period.  In addition, IPC would be required to determine any impairment of
other assets and write-down such assets to their fair value.

                                       10


(d)  Income Taxes - IPC follows the liability method of accounting for
deferred income taxes, which requires the establishment of deferred tax
assets and liabilities, as appropriate, for all temporary differences between
the tax basis of assets and liabilities and the amounts reported in the
financial statements.  Deferred taxes are recorded using currently enacted
tax rates.

Except as noted below, income tax expense includes provisions for deferred
taxes to reflect the tax effects of temporary differences between the time
when certain costs are recorded in the accounts and when they are deducted
for tax return purposes.  As temporary differences reverse, the related
accumulated deferred income taxes are reversed to income.  Investment tax
credits have been deferred and are subsequently credited to income over the
average lives of the related property.

Consistent with Iowa rate making practices, deferred tax expense is not
recorded for certain temporary differences (primarily related to utility
property, plant and equipment).  As the deferred taxes become payable (over
periods exceeding 30 years for some generating plant differences) they are
recovered through rates.  Accordingly, IPC has recorded deferred tax
liabilities and regulatory assets for certain temporary differences, as
identified in Note 1(c).

Alliant Energy files a consolidated federal income tax return.  Under the
terms of an agreement between Alliant Energy and its subsidiaries (including
IPC), the subsidiaries calculate their respective federal income tax
provisions and make payments to or receive payments from Alliant Energy as if
they were separate taxable entities.

(e)  Temporary Cash Investments - Temporary cash investments are stated at
cost, which approximates market value, and are considered cash equivalents
for the Balance Sheet and the Statement of Cash Flows.  These investments
consist of short-term liquid investments that have maturities of less than 90
days from the date of acquisition.

(f)  Depreciation of Utility Property, Plant and Equipment - IPC uses the
straight-line depreciation method as approved by its regulatory commissions.
In 2000, the average rates of depreciation for electric and gas properties,
consistent with current rate making practices, were 3.5% and 3.6%,
respectively.

(g)  Property, Plant and Equipment - Utility plant is recorded at original
cost, which includes overhead and administrative costs and allowance for
funds used during construction (AFUDC).  In 2000, the aggregate gross AFUDC
recovery rate, computed in accordance with the prescribed regulatory formula,
was 6.5%.

Other property, plant and equipment is recorded at original cost.  Upon
retirement or sale of other property and equipment, the cost and related
accumulated depreciation are removed from the accounts and any gain or loss
is included in "Miscellaneous, net" in the Statement of Income.  Ordinary
retirements of utility plant, including removal costs less salvage value, are
charged to accumulated depreciation upon removal from utility plant accounts
and no gain or loss is recognized.

(h)  Operating Revenues - IPC accrues revenues for services rendered but
unbilled at month-end.

(i)  Utility Fuel Cost Recovery - IPC's tariffs provide for subsequent
adjustments to its electric and natural gas rates for changes in the cost of
fuel, purchased energy and natural gas purchased for resale.  Changes in the
under/over collection of these costs are reflected in "Electric production
fuels" and "Cost of gas sold" in the Statement of Income.  The cumulative
effects are reflected on the Balance Sheet as a current asset or current
liability, pending automatic reflection in future billings to customers.
Purchased-power capacity costs are not recovered from electric customers
through energy adjustment clauses.  Recovery of these costs must be addressed
in base rates in a formal rate proceeding.

(j)  Derivative Financial Instruments - IPC uses derivative financial
instruments to hedge exposures to fluctuations in certain commodity prices.
IPC does not use such instruments for speculative purposes.  In accordance
with SFAS 133, "Accounting for Derivative Instruments and Hedging
Activities," as amended by SFAS 138, "Accounting for Certain Derivative
Instruments and Certain Hedging Activities - an Amendment of SFAS 133," the
fair value of all derivatives are recorded as assets or liabilities on the
Balance Sheet and gains and losses related to derivatives that are designated
as, and qualify as hedges, are recognized in earnings when the underlying
hedged item or physical transaction is recognized in income.  Gains and
losses related to derivatives that do not qualify for, or are not designated

                                       11


in hedge relationships, are recognized in earnings immediately.  IPC has
commodity purchase and sales contracts for both capacity and energy that have
been designated, and qualify for, the normal purchase and sale exception in
SFAS 138.  Based on this designation, these contracts are not accounted for
as derivative instruments.  Refer to Note 10 for further discussion of IPC's
derivative financial instruments.

(2)  APRIL 1998 ALLIANT ENERGY CORPORATION MERGER
In association with the 1998 merger between IPC, IES Industries Inc. and WPL
Holdings, Inc., Alliant Energy entered into a three-year consulting
agreement, which expires in the second quarter of 2001, with Wayne
Stoppelmoor, the Chief Executive Officer of IPC prior to the consummation of
the merger.  Under the terms of the consulting agreement, Mr. Stoppelmoor,
who was also Vice Chairman of Alliant Energy's Board of Directors until April
2000, received a fee of $200,000 in 2000 for his services.

(3)  LEASES
IPC's operating lease rental expense for 2000 was $2.0 million.  IPC's future
minimum lease payments by year are as follows (in thousands):

                                     Capital    Operating
Year                                 Leases      Leases
- -------------------------           ---------  ----------
2001                                   $14.1    $2,020.3
2002                                    14.1     1,313.4
2003                                    14.1     1,203.4
2004                                    14.1       319.4
2005                                    14.2         7.5
Thereafter                               4.7        75.0
                                    ---------  ----------
                                        75.3    $4,939.0
                                               ==========
Less:  Amount representing interest      7.8
                                    ---------
Present value of net minimum
    capital lease payments             $67.5
                                    =========

(4)  UTILITY ACCOUNTS RECEIVABLE
Utility customer accounts receivable, including unbilled revenues, arise
primarily from the sale of electricity and natural gas.  At December 31,
2000, IPC was serving a diversified base of residential, commercial and
industrial customers and did not have any significant concentrations of
credit risk.

(5)  INCOME TAXES
The components of federal and state income taxes for IPC for the year ended
December 31, 2000 were as follows (in millions):

Current tax expense                        $16.2
Deferred tax expense                        (0.2)
Amortization of investment tax credits      (1.0)
                                        ----------
                                           $15.0
                                        ==========

The overall effective income tax rate shown below for the year ended December
31, 2000 was computed by dividing total income tax expense by income before
income taxes.

Statutory federal income tax rate                            35.0%
    State income taxes, net of federal benefits               5.4
    Effect of rate making on property related differences     1.7
    Amortization of investment tax credits                   (2.4)
    Adjustment of prior period taxes                         (4.7)
    Other items, net                                         (0.7)
                                                           --------
Overall effective income tax rate                            34.3%
                                                           ========

                                       12


The accumulated deferred income tax (assets) and liabilities included on the
Balance Sheet at December 31, 2000 arise from the following temporary
differences (in millions):

Property related                  $104.6
Investment tax credit related       (9.0)
Other                               (2.1)
                                 ---------
                                   $93.5
                                 =========

(6)  PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
IPC has two non-contributory defined benefit pension plans that cover
substantially all of its employees.  Benefits are based on the employees'
years of service and compensation.  IPC also provides certain postretirement
health care and life benefits to eligible retirees.  In general, the health
care plans are contributory with participants' contributions adjusted
annually and the life insurance plans are non-contributory.

The weighted-average assumptions as of the measurement date of September 30,
2000 were as follows:

                                      Qualified         Other
                                       Pension      Postretirement
                                       Benefits        Benefits
                                     ------------- ---------------
Discount rate                               8%             8%
Expected return on plan assets              9%             9%
Rate of compensation increase              3.5%           N/A
Medical cost trend on covered charges:
      Initial trend rate                   N/A             9%
      Ultimate trend rate                  N/A             5%

The components of IPC's qualified pension benefits and other postretirement
benefits costs for 2000 were as follows (in thousands):

                                    Qualified        Other
                                     Pension     Postretirement
                                     Benefits      Benefits
                                  -------------  --------------
Service cost                          $1,059           $690
Interest cost                          2,251          2,701
Expected return on plan assets        (2,661)        (1,226)
Amortization of:
   Transition obligation                 154            998
   Prior service cost                    164           (224)
   Actuarial gain                         --           (229)
                                  -------------  --------------
Total                                   $967         $2,710
                                  =============  ==============

The pension benefit cost shown above (and in the following tables)
represents only the pension benefit cost for bargaining unit employees of IPC
covered under the IPC Retirement Income Plan sponsored by IPC.  The pension
benefit cost for IPC's non-bargaining employees who are now participants in
other Alliant Energy plans was $0.7 million for 2000.  In addition, Alliant
Energy Corporate Services, Inc. (Corporate Services) provides services to
IPC.  The allocated pension benefit cost associated with these services was
$0.6 million for 2000.  The other postretirement benefit cost shown
previously for 2000 (and in the following tables) represents the other
postretirement benefit cost for all IPC employees.  The allocated other
postretirement benefit cost associated with Corporate Services for IPC was
$0.1 million for 2000.

The assumed medical trend rates are critical assumptions in determining the
service and interest cost and accumulated postretirement benefit obligation
related to postretirement benefit costs.  A one percent change in the medical
trend rates for 2000, holding all other assumptions constant, would have the
following effects (in thousands):
                                                         1 Percent    1 Percent
                                                         Increase     Decrease
                                                        ----------   ----------
Effect on total of service and interest cost components     $500        ($400)
Effect on postretirement benefit obligation               $3,100      ($2,800)

                                       13


A reconciliation of the funded status of IPC's plans to the amounts
recognized on IPC's Balance Sheet at December 31, 2000 was as follows (in
thousands):



                                                         Qualified Pension       Other Postretirement
                                                             Benefits                  Benefits
                                                        --------------------     ----------------------
                                                                                       
Change in benefit obligation:
  Net benefit obligation at beginning of year                    $28,057                   $36,270
  Service cost                                                     1,059                       690
  Interest cost                                                    2,251                     2,701
  Plan amendments                                                  1,247                    (3,170)
  Actuarial loss (gain)                                           (1,780)                    2,674
  Gross benefits paid                                               (490)                   (2,645)
                                                        --------------------     ----------------------
     Net benefit obligation at end of year                        30,344                    36,520
                                                        --------------------     ----------------------

Change in plan assets:
  Fair value of plan assets at beginning of year                  29,772                    20,087
  Actual return on plan assets                                     2,689                     1,096
  Employer contributions                                              --                     4,745
  Gross benefits paid                                               (490)                   (2,645)
                                                        --------------------     ----------------------
     Fair value of plan assets at end of year                     31,971                    23,283
                                                        --------------------     ----------------------

Funded status at end of year                                       1,627                   (13,237)
Unrecognized net actuarial gain                                   (2,075)                   (2,062)
Unrecognized prior service cost                                    2,391                      (672)
Unrecognized net transition obligation                               319                     9,919
                                                        --------------------     ----------------------
     Net amount recognized at end of year                         $2,262                   ($6,052)
                                                        ====================     ======================

Amounts recognized on the
  Balance Sheet consist of:
     Prepaid benefit cost                                         $2,262                      $654
     Accrued benefit cost                                             --                    (6,706)
                                                        --------------------     ----------------------
     Net amount recognized at measurement date                     2,262                    (6,052)
                                                        --------------------     ----------------------

Contributions paid after 9/30 and prior to 12/31                      --                       771
                                                        --------------------     ----------------------
     Net amount recognized at 12/31                               $2,262                   ($5,281)
                                                        ====================     ======================



Alliant Energy sponsors several non-qualified pension plans which cover
certain current and former officers.  The pension expense allocated to IPC
for these plans was $0.9 million in 2000.

A significant number of IPC employees also participate in defined
contribution pension plans (401(k) plans).  IPC's contributions to the plans,
which are based on the participants' level of contribution, were $0.5 million
in 2000.

(7)  COMMON AND PREFERRED STOCK
(a)  Common Stock - IPC has common stock dividend restrictions based on its
respective bond indentures and articles of incorporation, and restrictions on
the payment of common stock dividends commonly found with preferred stock.
In addition, IPC's ability to pay common stock dividends is restricted based
on requirements associated with sinking funds.

(b)  Preferred Stock - In 1993, IPC issued 545,000 shares of 6.40%, $50 par
value preferred stock with a final redemption date of May 1, 2022.  Under the
provisions of the mandatory sinking fund, beginning in 2003, IPC is required
to redeem annually $1.4 million, or 27,250 shares of the preferred stock.

                                       14


The carrying value of IPC's cumulative preferred stock at December 31, 2000
was $36 million.  The fair market value, based upon the market yield of
similar securities and quoted market prices, at December 31, 2000 was $33
million.

(8)   DEBT
(a)   Short-Term Debt - IPC participates in a utility money pool with
Wisconsin Power and Light Company (WP&L) and IES Utilities Inc. (IESU),
subsidiaries of Alliant Energy, that is funded, as needed,
through the issuance of commercial paper by Alliant Energy.
Interest expense and other fees are allocated based on borrowing
amounts.  Information regarding IPC's short-term debt for 2000 is as follows
(dollars in millions):

As of year end:
    Money pool borrowings                           $68.2
    Interest rate on money pool borrowings          6.56%

For the year ended:
    Average amount of short-term debt
      (based on daily outstanding balances)         $42.4
    Average interest rate on short-term debt        6.51%

(b)  Long-Term Debt - IPC's First Mortgage Bonds are secured by substantially
all of IPC's utility plant.  Debt maturities for 2001 to 2005 are $0 million,
$0 million, $1.0 million, $0 million and $2.7 million, respectively.
Depending upon market conditions, it is currently anticipated that a majority
of the maturing debt will be refinanced with the issuance of long-term
securities.

The carrying value of IPC's long-term debt at December 31, 2000 was $170
million.  The fair market value, based upon the market yield of similar
securities and quoted market prices, at December 31, 2000 was $176 million.

(9) ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
The carrying amount of IPC's current assets and current liabilities
approximates fair value because of the short maturity of such financial
instruments.  Since IPC is subject to regulation, any gains or losses related
to the difference between the carrying amount and the fair value of its
financial instruments may not be realized by IPC's parent.

(10)  DERIVATIVE FINANCIAL INSTRUMENTS
IPC adopted SFAS 133 as of July 1, 2000.  SFAS 133 requires that every
derivative instrument be recorded on the balance sheet as an asset or
liability measured at its fair value and that changes in the derivative's
fair value be recognized currently in earnings unless specific hedge
accounting criteria are met.

SFAS 133 requires that as of the date of initial adoption, the difference
between the fair value of derivative instruments recorded on the balance
sheet and the previous carrying amount of those derivatives be reported in
net income or other comprehensive income, as appropriate, as the cumulative
effect of a change in accounting principle in accordance with Accounting
Principles Board Opinion 20, "Accounting Changes."  In the third quarter of
2000, the impact of IPC adopting SFAS 133 as of July 1, 2000 did not affect
net income before the cumulative effect of a change in accounting principle.

A limited number of IPC's fixed price commodity contracts are defined as
derivatives under SFAS 133.  The fair values of these derivative instruments
have been recorded as assets and liabilities on the balance sheet and in the
transition adjustment in accordance with the transition provisions of SFAS
133.  Changes in the fair values of these instruments subsequent to July 1,
2000, to the extent that the derivatives are designated in cash flow hedging
relationships and are effective at mitigating the underlying commodity risk,
are recorded in other comprehensive income.  At the date the underlying
transaction occurs, the amounts accumulated in other comprehensive income are
reported in the Statement of Income.  To the extent that the hedges are not
effective, the ineffective portion of the changes in fair value is recorded
directly in earnings.

                                       15


IPC's financial statement impact of recording the various SFAS 133
transactions at July 1, 2000 was as follows (in thousands):




                Financial Statement Account                      Financial Statement        Amount Increased
- ------------------------------------------------------------    ----------------------    ---------------------
                                                                                              
Other assets                                                     Balance sheet                     $5.8
Other liabilities                                                Balance sheet                      2.4
Cumulative effect of a change in accounting principle
   (other comprehensive income)                                  Balance sheet                      3.4



During 2000, $3,390 of net income included in the cumulative effect of a
change in accounting principle component of accumulated other comprehensive
income was reclassified into earnings, resulting in a remaining balance of $0
at December 31, 2000.

IPC's primary market risk exposures are associated with commodity prices.
IPC has risk management policies to monitor and assist in controlling these
market risks and uses derivative instruments to manage some of the
exposures.  During 2000, IPC held derivative instruments designated as cash
flow hedging instruments and other derivatives.  The cash flow hedging
instruments were comprised of coal purchase and sales contracts which were
used to manage the price of anticipated coal purchases and sales.  IPC did
not have any cash flow hedging instruments outstanding at December 31, 2000.

For the year ended December 31, 2000, there was no gain or loss recognized in
earnings representing the amount of hedge ineffectiveness.  IPC did not
exclude any components of the derivative instruments' gain or loss from the
assessment of hedge effectiveness and there were no reclasses into earnings
as a result of the discontinuance of hedges.

IPC's derivatives that have not been designated in hedge relationships
include electricity price collars, used to manage energy costs during
supply/demand imbalances.  During 2000, these derivatives were recorded at
their fair market value as derivative assets, derivative liabilities and
regulatory assets on the Balance Sheet.

(11)  COMMITMENTS AND CONTINGENCIES
(a)  Construction and Acquisition Program - IPC anticipates 2001 utility
construction and acquisition expenditures will be approximately $59 million.
During 2002-2005, IPC expects to spend approximately $239 million for utility
construction and acquisition expenditures.

(b)  Purchased-Power and Transmission, Coal and Natural Gas Contracts -
Corporate Services has entered into purchased-power and transmission, coal,
and natural gas supply, transportation and storage contracts as agent for
IPC, WP&L and IESU.  The natural gas supply commitments are all index-based.
Based on the System Coordination and Operating Agreement, Alliant Energy
annually allocates purchased-power contracts to the individual utilities.
Such process considers factors such as resource mix, load growth and resource
availability.  Refer to Note 15 for additional information.  In addition,
Corporate Services has entered into various coal contracts as agent for IPC,
WP&L and IESU.  Contract quantities are allocated to specific plants at the
individual utilities based on various factors including projected heat input
requirements, combustion compatibility and efficiency.  However, for 2001,
2002 and 2003, system-wide contracts of $21.3 million (5.1 million tons),
$1.7 million (0.5 million tons) and $1.7 million (0.5 million tons),
respectively, have not yet been allocated to the individual utilities due to
the need for additional analysis of combustion compatibility and efficiency.
Corporate Services expects to supplement its coal and natural gas supplies
with spot market purchases as needed.  The minimum commitments directly
assigned to IPC were as follows (dollars and dekatherms (Dths) in millions;
megawatt-hours (MWhs) and tons in thousands):

                                       16



                                                                      Natural gas supply,
              Purchased-power and          Coal (including            transportation and
                 transmission              transportation)             storage contracts
            ------------------------    -----------------------    --------------------------
             Dollars        MWhs         Dollars       Tons          Dollars         Dths
            ----------    ----------    ----------   ----------    ------------    ----------
                                                                     
2001           $13.8           62           $8.3        2,165         $16.3             28
2002             5.0           61            4.8        1,824           5.2             19
2003             3.1           61            4.2        1,706           2.8             14
2004             --            --            1.3          533           --              --
2005             --            --            1.3          533           --              --



(c)  Information Technology Services - Corporate Services has an agreement,
expiring in 2004, with Electronic Data Systems Corporation (EDS) for
information technology services.  IPC's anticipated operating and capital
expenditures under the agreement for 2001 are estimated to total
approximately $0.6 million.  Future costs under the agreement are variable
and are dependent upon IPC's level of usage of technological services from
EDS.

(d)  Environmental Liabilities - As of December 31, 2000, IPC had recorded
environmental liabilities and regulatory assets for manufactured gas plant
(MGP) sites of $15.5 million and $14.7 million, respectively.  IPC has
current or previous ownership interests in 9 MGP sites previously associated
with the production of gas for which it may be liable for investigation,
remediation and monitoring costs relating to the sites.  IPC has received
letters from state environmental agencies requiring no further action at one
site.  IPC is working pursuant to the requirements of various federal and
state agencies to investigate, mitigate, prevent and remediate, where
necessary, the environmental impacts to property, including natural
resources, at and around the sites in order to protect public health and the
environment.

IPC records environmental liabilities based upon periodic studies, most
recently updated in the third quarter of 2000, related to the MGP sites.
Such amounts are based on the best current estimate of the remaining amount
to be incurred for investigation, remediation and monitoring costs for those
sites where the investigation process has been or is substantially completed,
and the minimum of the estimated cost range for those sites where the
investigation is in its earlier stages.  It is possible that future cost
estimates will be greater than current estimates as the investigation process
proceeds and as additional facts become known.  The amounts recognized as
liabilities are reduced for expenditures made and are adjusted as further
information develops or circumstances change.  Costs of future expenditures
for environmental remediation obligations are not discounted to their fair
value.  Management currently estimates the range of remaining costs to be
incurred for the investigation, remediation and monitoring of all IPC sites
to be approximately $11 million to $20 million.

The MPUC allows the deferral of MGP-related costs applicable to the Minnesota
sites and IPC has been successful in obtaining approval to recover such costs
in rates in Minnesota.  The IUB has permitted utilities to recover prudently
incurred costs.  Regulatory assets have been recorded by IPC which reflect
the probable future rate recovery, where applicable.  Considering the current
rate treatment, and assuming no material change therein, IPC believes that
the clean-up costs incurred for these MGP sites will not have a material
adverse effect on its financial condition or results of operations.

IPC has settled with all but one of its insurance carriers regarding
reimbursement for its MGP-related costs. Insurance recoveries of $5.3 million
were available as of December 31, 2000.  Pursuant to its applicable rate
making treatment, IPC has recorded its recoveries in "Other long-term
liabilities and deferred credits."

(e)  Legal Proceedings - IPC is involved in legal and administrative
proceedings before various courts and agencies with respect to matters
arising in the ordinary course of business.  Although unable to predict the
outcome of these matters, IPC believes that appropriate reserves have been
established and final disposition of these actions will not have a material
adverse effect on its financial condition or results of operations.

                                       17


(12)  JOINTLY-OWNED ELECTRIC UTILITY PLANT
Under joint ownership agreements with other Iowa utilities, IPC has undivided
ownership interests in jointly-owned electric generating stations and related
transmission facilities.  Each of the respective owners is responsible for
the financing of its portion of the construction costs.  Kilowatt-hour
generation and operating expenses are divided on the same basis as ownership
with each owner reflecting its respective costs in its Statement of Income.
Information relative to IPC's ownership interest in these facilities at
December 31, 2000 was as follows (dollars in millions):



                                                           Accumulated     Construction
                     Fuel        Ownership     Plant in   Provision for      Work-In-
                     Type        Interest %    Service    Depreciation       Progress
- ----------------------------------------------------------------------------------------
                                                                
  Neal Unit 4        Coal           21.5         $83.5        $53.9            $--
  Louisa Unit 1      Coal            4.0          24.7         13.2             --
                                              ------------------------------------------
                                                $108.2        $67.1            $--
                                              ==========================================



(13)  SEGMENTS OF BUSINESS
IPC is a regulated domestic utility, serving customers in Iowa, Minnesota and
Illinois, and is broken down into three  segments: a) electric operations; b)
gas operations; and c) other, which includes the unallocated portions of the
utility business.  Various line items in the following tables are not
allocated to the electric and gas segments for management reporting purposes
and therefore are included in "Other."  Intersegment revenues were not
material to IPC's operations and there was no single customer whose revenues
exceeded 10 percent or more of IPC's revenues.  Certain financial information
relating to IPC's significant business segments for 2000 was as follows
(in millions):



                                                          Electric        Gas         Other         Total
                                                       -----------------------------------------------------
                                                                                         
Operating revenues                                          $304.4       $53.6         $--          $358.0
Depreciation and amortization expense                         32.7         2.7          --            35.4
Operating income                                              53.6         3.2          --            56.8
Interest expense, net of AFUDC                                                         15.4           15.4
Miscellaneous, net                                                                     (2.3)          (2.3)
Income tax expense                                                                     15.0           15.0
Net income                                                                             28.7           28.7
Preferred dividends                                                                     2.5            2.5
Earnings available for common stock                                                    26.2           26.2
Total assets                                                 590.3        88.7         26.7          705.7
Construction and acquisition expenditures                     45.7         4.9          --            50.6



(14)  SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)



                                                                       Quarter Ended
                                          ------------------------------------------------------------------------
                                              March 31         June 30          September 30       December 31
                                          ----------------- ---------------   ----------------- ------------------
                                                                       (in millions)
                                                                                               
2000
- ----
  Operating revenues                               $81.0            $80.1              $100.1             $96.8
  Operating income                                   8.5              9.5                29.8               9.0
  Net income                                         2.8              3.9                15.1               6.9
  Earnings available for common stock                2.1              3.3                14.5               6.3



                                       18


(15)  RELATED PARTY ISSUES
In association with the 1998 merger that resulted in the formation of Alliant
Energy, IPC, IESU and WP&L entered into a System Coordination and Operating
Agreement which became effective with the merger.  The agreement, which has
been approved by FERC, provides a contractual basis for coordinated planning,
construction, operation and maintenance of the interconnected electric
generation and transmission systems of the three utility companies.  In
addition, the agreement allows the interconnected system to be operated as a
single entity with off-system capacity sales and purchases made to market
excess system capability or to meet system capability deficiencies.  Such
sales and purchases are allocated among the three utility companies based on
procedures included in the agreement.  The sales amounts allocated to IPC
were $26.3 million for 2000.  The purchases allocated to IPC were $64.2
million for 2000.  The procedures were approved by both FERC and all state
regulatory bodies having jurisdiction over these sales.  Under the agreement,
IPC, IESU and WP&L are fully reimbursed for any generation expense incurred
to support the sale to an affiliate or to a non-affiliate.  Any margins on
sales to non-affiliates are distributed to the three utilities in proportion
to each utility's share of electric production at the time of sale.

Pursuant to a service agreement approved by the Securities and Exchange
Commission under the Public Utility Holding Company Act of 1935, IPC receives
various administrative and general services from an affiliate, Corporate
Services.  These services are billed to IPC at cost based on payroll and
other expenses incurred by Corporate Services for the benefit of IPC.  These
costs totaled $46.8 million for 2000, and consisted primarily of employee
compensation, benefits and fees associated with various professional
services.  At December 31, 2000, IPC had an intercompany payable to Corporate
Services of $11.6 million.


                                       19



                                        INTERSTATE POWER COMPANY
                              CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

                                                                    For the Nine Months Ended September 30,
                                                                           2001                     2000
- --------------------------------------------------------------------------------------------------------------
                                                                                 (in thousands)
                                                                                                 
Operating revenues:
  Electric utility                                                           $233,156                $232,719
  Gas utility                                                                  48,898                  28,419
                                                                  --------------------     -------------------
                                                                              282,054                 261,138
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Operating expenses:
  Electric production fuels                                                    43,455                  41,851
  Purchased power                                                              45,352                  50,107
  Cost of gas sold                                                             35,013                  16,953
  Other operation and maintenance                                              69,033                  66,594
  Depreciation and amortization                                                28,097                  26,060
  Taxes other than income taxes                                                13,647                  11,795
                                                                  --------------------     -------------------
                                                                              234,597                 213,360
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Operating income                                                               47,457                  47,778
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Interest expense and other:
  Interest expense                                                             12,232                  11,996
  Allowance for funds used during construction                                   (619)                   (694)
  Miscellaneous, net                                                              412                  (1,202)
                                                                  --------------------     -------------------
                                                                               12,025                  10,100
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Income before income taxes                                                     35,432                  37,678
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Income taxes                                                                   14,423                  15,910
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Net income                                                                     21,009                  21,768
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Preferred dividend requirements                                                 1,871                   1,866
                                                                  --------------------     -------------------

- --------------------------------------------------------------------------------------------------------------

Earnings available for common stock                                           $19,138                 $19,902
                                                                  ====================     ===================

- --------------------------------------------------------------------------------------------------------------

The accompanying Notes to Consolidated Financial Statements are an integral part of these statements.



                                       20



                                         INTERSTATE POWER COMPANY
                                   CONSOLIDATED BALANCE SHEET (UNAUDITED)
                                            SEPTEMBER 30, 2001
                                              (in thousands)

ASSETS
- --------------------------------------------------------------------------------------------------------------
                                                                                                    
Property, plant and equipment:
  Utility -
    Plant in service -
      Electric                                                                                       $964,222
      Gas                                                                                              80,876
      Common                                                                                           15,571
                                                                                            ------------------
                                                                                                    1,060,669
    Less - Accumulated depreciation                                                                   549,803
                                                                                            ------------------
                                                                                                      510,866
    Construction work in progress                                                                      18,880
                                                                                            ------------------
                                                                                                      529,746
  Other property, plant and equipment, net of accumulated
      depreciation and amortization of $102                                                               179
                                                                                            ------------------
                                                                                                      529,925
                                                                                            ------------------

- --------------------------------------------------------------------------------------------------------------

Current assets:
  Cash and temporary cash investments                                                                   2,293
  Accounts receivable:
    Customer, less allowance for doubtful accounts of $522                                              7,603
    Associated companies                                                                                1,522
    Other                                                                                               2,079
  Production fuel, at average cost                                                                     18,615
  Materials and supplies, at average cost                                                               5,882
  Gas stored underground, at average cost                                                               3,687
  Regulatory assets                                                                                     4,016
  Prepayments and other                                                                                 5,079
                                                                                            ------------------
                                                                                                       50,776
                                                                                            ------------------

- --------------------------------------------------------------------------------------------------------------

Investments                                                                                             6,762
                                                                                            ------------------

- --------------------------------------------------------------------------------------------------------------

Other assets:
  Regulatory assets                                                                                    50,342
  Deferred charges and other                                                                           14,995
                                                                                            ------------------
                                                                                                       65,337
                                                                                            ------------------

- --------------------------------------------------------------------------------------------------------------

Total assets                                                                                         $652,800
                                                                                            ==================

- --------------------------------------------------------------------------------------------------------------

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.



                                       21



                                         INTERSTATE POWER COMPANY
                            CONSOLIDATED BALANCE SHEET (UNAUDITED) (Continued)
                                           SEPTEMBER 30, 2001
                                 (in thousands, except share amounts)

CAPITALIZATION AND LIABILITIES
- -----------------------------------------------------------------------------------------------------------
                                                                                                  
Capitalization:
  Common stock - $3.50 par value - authorized 30,000,000
     shares; 9,777,432 shares outstanding                                                          $34,221
  Additional paid-in capital                                                                       108,644
  Retained earnings                                                                                 88,916
                                                                                         ------------------
    Total common equity                                                                            231,781
  Cumulative preferred stock, not mandatorily redeemable                                            10,819
  Cumulative preferred stock, mandatorily redeemable                                                24,810
  Long-term debt                                                                                   165,574
                                                                                         ------------------
                                                                                                   432,984
                                                                                         ------------------

- -----------------------------------------------------------------------------------------------------------

Current liabilities:
  Notes payable to associated companies                                                             23,996
  Accounts payable                                                                                  15,169
  Accounts payable to associated companies                                                          11,901
  Accrued taxes                                                                                     19,843
  Other                                                                                             10,275
                                                                                         ------------------
                                                                                                    81,184
                                                                                         ------------------

- -----------------------------------------------------------------------------------------------------------

Other long-term liabilities and deferred credits:
  Accumulated deferred income taxes                                                                 92,186
  Accumulated deferred investment tax credits                                                       12,052
  Environmental liabilities                                                                         13,856
  Pension and other benefit obligations                                                              9,336
  Other                                                                                             11,202
                                                                                         ------------------
                                                                                                   138,632
                                                                                         ------------------

- -----------------------------------------------------------------------------------------------------------

Total capitalization and liabilities                                                              $652,800
                                                                                         ==================

- -----------------------------------------------------------------------------------------------------------

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.



                                       22



                                              INTERSTATE POWER COMPANY
                                 CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

                                                                             For the Nine Months Ended September 30,
                                                                                   2001                   2000
- ---------------------------------------------------------------------------------------------------------------------
                                                                                         (in thousands)
                                                                                                        
Cash flows from operating activities:
  Net income                                                                         $21,009                 $21,768
  Adjustments to reconcile net income to net cash flows
    from operating activities:
    Depreciation and amortization                                                     28,097                  26,060
    Amortization of deferred energy efficiency expenditures                            6,872                   8,454
    Deferred tax benefits and investment tax credits                                  (2,261)                 (3,822)
    Other                                                                                726                     615
  Other changes in assets and liabilities:
    Accounts receivable                                                               43,167                     500
    Production fuel                                                                   (2,266)                 (7,410)
    Gas stored underground                                                             1,523                  (2,436)
    Accounts payable                                                                  (6,438)                  2,047
    Accrued taxes                                                                      5,909                   6,675
    Benefit obligations and other                                                      6,935                  (3,061)
                                                                          -------------------    --------------------
       Net cash flows from operating activities                                      103,273                  49,390
                                                                          -------------------    --------------------

- ---------------------------------------------------------------------------------------------------------------------

Cash flows used for financing activities:
    Common stock dividends declared                                                  (16,280)                (16,280)
    Preferred stock dividends                                                         (1,871)                 (1,866)
    Reductions in long-term debt                                                      (5,000)                      -
    Net change in short-term borrowings                                              (44,222)                  8,199
    Other                                                                               (207)                   (564)
                                                                          -------------------    --------------------
       Net cash flows used for financing activities                                  (67,580)                (10,511)
                                                                          -------------------    --------------------

- ---------------------------------------------------------------------------------------------------------------------

Cash flows used for investing activities:
    Utility construction expenditures                                                (33,310)                (34,796)
    Other                                                                             (2,961)                 (6,169)
                                                                          -------------------    --------------------
       Net cash flows used for investing activities                                  (36,271)                (40,965)
                                                                          -------------------    --------------------

- ---------------------------------------------------------------------------------------------------------------------

Net decrease in cash and temporary cash investments                                     (578)                 (2,086)
                                                                          -------------------    --------------------

- ---------------------------------------------------------------------------------------------------------------------

Cash and temporary cash investments at beginning of period                             2,871                   3,545
                                                                          -------------------    --------------------

- ---------------------------------------------------------------------------------------------------------------------

Cash and temporary cash investments at end of period                                  $2,293                  $1,459
                                                                          ===================    ====================

- ---------------------------------------------------------------------------------------------------------------------

Supplemental cash flows information:
    Cash paid during the period for:
       Interest                                                                       $9,514                  $9,068
                                                                          ===================    ====================
       Income taxes                                                                   $6,198                  $8,170
                                                                          ===================    ====================

- ---------------------------------------------------------------------------------------------------------------------

The accompanying Notes to Consolidated Financial Statements are an integral part of these statements.



                                       23

                     INTERSTATE POWER COMPANY

      NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1.  The interim consolidated financial statements included
    herein have been prepared by Interstate Power Company (IPC),
    without audit, pursuant to the rules and regulations of the
    Securities and Exchange Commission (SEC).  Accordingly,
    certain information and footnote disclosures normally included
    in financial statements prepared in accordance with United States
    generally accepted accounting principles have been condensed or omitted,
    although management believes that the disclosures are adequate
    to make the information presented not misleading.  The  consolidated
    financial  statements  include  IPC  and  its  consolidated
    subsidiary related to its sale of accounts receivable program.  IPC is a
    subsidiary of Alliant Energy Corporation.

    In the opinion of management, all adjustments, which are
    normal and recurring in nature, necessary for a fair
    presentation of (a) the consolidated results of operations for
    the nine months ended September 30, 2001 and 2000, (b) the
    consolidated financial position at September 30, 2001, and (c)
    the consolidated statements of cash flows for the nine months
    ended September 30, 2001 and 2000, have been made.  Because of
    the seasonal nature of IPC's operations, results for the nine
    months ended September 30, 2001 are not necessarily indicative
    of results that may be expected for the year ending December
    31, 2001.

2.  IPC's comprehensive income, and the components of other
    comprehensive income, net of taxes, for the nine months ended
    September 30 were as follows (in thousands):




                                                                     2001           2000
                                                                  -----------    -----------
                                                                              
      Earnings available for common stock                            $19,138       $19,902
        Other comprehensive income:
           Unrealized gains (losses) on derivatives qualified as
             hedges:
               Unrealized holding gains arising during period
                 due to cumulative effect of a change in
                 accounting principle, net of tax                         --             3
               Other unrealized holding losses arising during
                 period, net of tax                                       --            (3)
                                                                  -----------    -----------
           Net unrealized gains on qualifying derivatives                 --            --
                                                                  -----------    -----------
        Other comprehensive income                                        --            --
                                                                  -----------    -----------
      Comprehensive income                                           $19,138       $19,902
                                                                  ===========    ===========



3.  Certain financial information relating to IPC's significant
    business segments is presented below.  Intersegment revenues were not
    material to IPC's operations.




                                                       Electric        Gas          Total
                                                    ------------------------------------------
                                                                  (in thousands)
                                                                              
     Nine Months Ended September 30, 2001
     ------------------------------------
     Operating revenues                                 $233,156      $48,898       $282,054
     Operating income                                     44,653        2,804         47,457
     Earnings available for common stock                                              19,138

     Nine Months Ended September 30, 2000
     ------------------------------------
     Operating revenues                                 $232,719      $28,419       $261,138
     Operating income                                     47,186          592         47,778
     Earnings available for common stock                                              19,902



                                       24


4.  The provisions for income taxes are based on the estimated
    annual effective tax rate, which differs from the federal
    statutory rate of 35% principally due to state income taxes,
    tax credits, effects of utility rate making and certain
    non-deductible expenses.

5.  IPC's primary market risk exposures are associated with
    commodity prices.  IPC has risk management policies to monitor
    and assist in controlling these market risks and uses
    derivative instruments to manage some of the exposures.
    During the nine months ended September 30, 2001, IPC held
    derivative instruments that were not designated in hedge
    relationships.  During the nine months ended September 30,
    2000, IPC held derivative instruments designated as cash flow
    hedging instruments and other derivatives.  The cash flow
    hedging instruments were comprised of coal purchase and sales
    contracts which were used to manage the price of anticipated
    coal purchases and sales.

    For the nine months ended September 30, 2000, there was no
    gain or loss recognized in earnings representing the amount of
    hedge ineffectiveness.  IPC did not exclude any components of
    the derivative instruments' gain or loss from the assessment
    of hedge effectiveness and there were no reclasses into
    earnings as a result of the discontinuance of hedges.

    IPC's derivatives that have not been designated in hedge
    relationships include electricity price collars, used to
    manage energy costs during supply/demand imbalances.  During
    the nine months ended September 30, 2001, these
    derivatives were recorded at their fair market value as
    derivative assets, derivative liabilities and regulatory
    assets on the Balance Sheet.

6.  The merger of IPC with and into IES Utilities Inc. was approved by their
    respective shareowners in April 2001 and by the SEC in October 2001.
    The merger was effective January 1, 2002 and IESU changed its name to
    Interstate Power and Light Company.  The following illustrates the
    impact of the merger if it had occurred as of January 1, 2000 (in
    thousands):


                                           For the Nine Months
                                           Ended September 30,
                                             2001           2000
                                         ------------    ----------
    Operating revenues                    $1,042,250      $886,137
    Earnings available for common stock       76,590        79,233


                                       25


           (b)   Pro Forma Financial Information.
                 -------------------------------

           Pro forma financial information required by this Item 7 is as
           follows:

                      INTERSTATE POWER AND LIGHT COMPANY

               UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS

The unaudited pro forma combined financial statements for the surviving
company, Interstate Power and Light Company (IP&L), combine the historical
consolidated balance sheets and statements of income of IES Utilities Inc.
(IESU) and Interstate Power Company (IPC) as adjusted by various balance
sheet pro forma adjustments identified in Note 1.  Pro forma income statement
adjustments were not required.  We have included all material adjustments
known to us at this time which impact the reporting periods shown.

These pro forma combined financial statements set forth the restated combined
financial data that will be presented for future comparative financial data
for the merged company.  These statements are prepared on the basis of
accounting for the merger as a common control merger and are based on the
assumptions set forth in the notes hereto.

The following information is not necessarily indicative of the financial
position or operating results that would have occurred had the merger been
consummated on the date, or at the beginning of the periods, for which the
merger is being given effect nor is it necessarily indicative of future
operating results or financial position.

                                       26




                                                       INTERSTATE POWER AND LIGHT COMPANY
                                                   UNAUDITED PRO FORMA COMBINED BALANCE SHEET
                                                             September 30, 2001
                                                               (in thousands)

                                                                                                Pro Forma
                                                                                               Adjustments         Pro Forma
                                                                IESU            IPC            (See Note 1)         Combined
                                                        --------------------------------------------------------------------------
                                                                                                          
ASSETS
Property, plant and equipment:
  Utility -
    Plant in service -
      Electric                                                $2,294,947      $964,222              $-             $3,259,169
      Gas                                                        228,993        80,876               -                309,869
      Steam                                                       59,554           -                 -                 59,554
      Common                                                     163,903        15,571               -                179,474
                                                        --------------------------------------------------------------------------
                                                               2,747,397     1,060,669               -              3,808,066
    Less - Accumulated depreciation                            1,470,701       549,803               -              2,020,504
                                                        --------------------------------------------------------------------------
                                                               1,276,696       510,866               -              1,787,562
    Construction work in progress                                 97,974        18,880               -                116,854
    Leased nuclear fuel, net                                      40,732           -                 -                 40,732
                                                        --------------------------------------------------------------------------
                                                               1,415,402       529,746               -              1,945,148

  Other property, plant and equipment, net                         5,894           179               -                  6,073
                                                        --------------------------------------------------------------------------
                                                               1,421,296       529,925               -              1,951,221
                                                        --------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------------

Current assets:
  Cash and temporary cash investments                              7,916         2,293               -                 10,209
  Temporary cash investments with associated companies            56,777           -            (23,996)               32,781
  Accounts receivable:
     Customer, net                                                   -           7,603               -                  7,603
     Associated companies                                          1,932         1,522             (168)                3,286
     Other, net                                                    6,028         2,079               -                  8,107
  Production fuel, at average cost                                10,356        18,615               -                 28,971
  Materials and supplies, at average cost                         24,612         5,882               -                 30,494
  Gas stored underground, at average cost                         16,477         3,687               -                 20,164
  Regulatory assets                                                6,851         4,016               -                 10,867
  Prepayments and other                                            3,181         5,079           (3,153)                5,107
                                                        --------------------------------------------------------------------------
                                                                 134,130        50,776          (27,317)              157,589
                                                        --------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------------

Investments:
  Nuclear decommissioning trust funds                            114,852           -                 -                114,852
  Other                                                            6,281         6,762               -                 13,043
                                                        --------------------------------------------------------------------------
                                                                 121,133         6,762               -                127,895
                                                        --------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------------

Other assets:
  Regulatory assets                                              115,849        50,342               -                166,191
  Deferred charges and other                                      15,496        14,995               -                 30,491
                                                        --------------------------------------------------------------------------
                                                                 131,345        65,337               -                196,682
                                                        --------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------------

Total assets                                                  $1,807,904      $652,800         ($27,317)           $2,433,387
                                                        ==========================================================================

- ----------------------------------------------------------------------------------------------------------------------------------

The accompanying Notes to Unaudited Pro Forma Combined Balance Sheet are an integral part of this statement.



                                       27




                                            INTERSTATE POWER AND LIGHT COMPANY
                                  UNAUDITED PRO FORMA COMBINED BALANCE SHEET (Continued)
                                                 September 30, 2001
                                                   (in thousands)

                                                                                                 Pro Forma
                                                                                                Adjustments       Pro Forma
                                                                    IESU             IPC        (See Note 1)       Combined
                                                           -----------------------------------------------------------------
                                                                                                          
CAPITALIZATION AND LIABILITIES
Capitalization:
  Common stock                                                     $33,427         $34,221        ($34,221)         $33,427
  Additional paid-in capital                                       279,042         108,644          34,221          421,907
  Retained earnings                                                281,305          88,916               -          370,221
                                                           -----------------------------------------------------------------
    Total common equity                                            593,774         231,781               -          825,555
  Cumulative preferred stock, not mandatorily redeemable            18,320          10,819               -           29,139
  Cumulative preferred stock, mandatorily redeemable                     -          24,810               -           24,810
  Long-term debt (excluding current portion)                       694,407         165,574               -          859,981
                                                           -----------------------------------------------------------------
                                                                 1,306,501         432,984               -        1,739,485
                                                           -----------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------

Current liabilities:
  Current maturities and sinking funds                                 560               -               -              560
  Capital lease obligations                                         15,060              14               -           15,074
  Notes payable to associated companies                                  -          23,996         (23,996)              -
  Accounts payable                                                  32,225          15,169               -           47,394
  Accounts payable to associated companies                          24,340          11,901            (168)          36,073
  Accrued taxes                                                     68,984          19,843               -           88,827
  Other                                                             35,662          10,261          (3,153)          42,770
                                                           -----------------------------------------------------------------
                                                                   176,831          81,184         (27,317)         230,698
                                                           -----------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------

Other long-term liabilities and deferred credits:
  Accumulated deferred income taxes                                212,684          92,186               -          304,870
  Accumulated deferred investment tax credits                       22,954          12,052               -           35,006
  Environmental liabilities                                         27,597          13,856               -           41,453
  Pension and other benefit obligations                             24,596           9,336               -           33,932
  Capital lease obligations                                         25,672              45               -           25,717
  Other                                                             11,069          11,157               -           22,226
                                                           -----------------------------------------------------------------
                                                                   324,572         138,632               -          463,204
                                                           -----------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------------------

Total capitalization and liabilities                            $1,807,904        $652,800        ($27,317)      $2,433,387
                                                           =================================================================

- ----------------------------------------------------------------------------------------------------------------------------

The accompanying Notes to Unaudited Pro Forma Combined Balance Sheet are an integral part of this statement.



                                       28


                                   INTERSTATE POWER AND LIGHT COMPANY

                           NOTES TO UNAUDITED PRO FORMA COMBINED BALANCE SHEET
                                       AS OF SEPTEMBER 30, 2001




1.       Pro Forma Adjustments
                                                        Merged
                                                        Company
                                                        Common          Inter-       Adjustment
                                                         Stock          Company        Clause         Utility        Total
                                                      Adjustment     Transactions     Balances       Money Pool    Pro Forma
                                                     (Note 1 (a))    (Note 1 (b))   (Note 1 (c))    (Note 1(d))   Adjustments
                                                     --------------  -------------- --------------  ------------- -------------
                                                                                  (in thousands)
                                                                                                         
ASSETS
Current assets:
    Temporary cash investments with associated
      companies                                             $-              $-              $-         ($23,996)     ($23,996)
    Accounts receivable from associated companies            -             (168)             -              -            (168)
    Prepayments and other                                    -               -             (3,153)          -          (3,153)
                                                     --------------  -------------- --------------  ------------- -------------
        Total current assets                                 -             (168)           (3,153)      (23,996)      (27,317)
                                                     --------------  -------------- --------------  ------------- -------------

           Total assets                                     $-            ($168)          ($3,153)     ($23,996)     ($27,317)
                                                     ==============  ============== ==============  ============= =============

CAPITALIZATION AND LIABILITIES
Capitalization:
  Common equity:
     Common stock                                       ($34,221)           $-              $-             $-        ($34,221)
     Additional paid-in capital                           34,221             -               -              -          34,221
                                                     --------------  -------------- --------------  ------------- -------------
           Total common equity                               -               -               -              -             -
                                                     --------------  -------------- --------------  ------------- -------------

Current liabilities:
    Notes payable to associated companies                    -               -               -          (23,996)      (23,996)
    Accounts payable to associated companies                 -             (168)             -              -            (168)
    Other                                                    -               -             (3,153)          -          (3,153)
                                                     --------------  -------------- --------------  ------------- -------------
        Total current liabilities                            -             (168)           (3,153)      (23,996)      (27,317)
                                                     --------------  -------------- --------------  ------------- -------------

           Total capitalization and liabilities             $-            ($168)          ($3,153)     ($23,996)     ($27,317)
                                                     ==============  ============== ==============  ============= =============



(a)  Merged Company Common Stock Adjustment
As provided in the Merger Agreement, all issued and outstanding shares of IPC
common stock will be dissolved upon consummation of the merger.  The pro
forma adjustment to common equity restates the common stock account to equal
the $2.50 par value of IESU's 13,370,788 shares of common stock and
reclassifies the excess to additional paid-in capital.

(b)  Intercompany Transactions
At September 30, 2001, intercompany receivables and payables between IESU and
IPC during the period presented were eliminated from the pro forma balance
sheet.

(c)   Adjustment Clause Balances
An adjustment was needed to offset IPC's Adjustment Clause debit balance
against IESU's Adjustment Clause credit balance.

(d)   Utility Money Pool
An adjustment was needed to offset IPC's borrowings from the money pool
against IESU's loans to the money pool.

                                       29




                                         INTERSTATE POWER AND LIGHT COMPANY
                                 UNAUDITED PRO FORMA COMBINED STATEMENT OF INCOME
                                  FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2001
                                              (in thousands)


                                                                                                     Pro Forma
                                                                      IESU             IPC            Combined
                                                              ---------------------------------------------------
                                                                                                 
Operating revenues:
  Electric utility                                                    $557,975         $233,156         $791,131
  Gas utility                                                          177,743           48,898          226,641
  Steam                                                                 24,478                -           24,478
                                                              ---------------------------------------------------
                                                                       760,196          282,054        1,042,250
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Operating expenses:
  Electric and steam production fuels                                  106,709           43,455          150,164
  Purchased power                                                      107,441           45,352          152,793
  Cost of gas sold                                                     136,701           35,013          171,714
  Other operation and maintenance                                      175,491           69,033          244,524
  Depreciation and amortization                                         82,517           28,097          110,614
  Taxes other than income taxes                                         33,121           13,647           46,768
                                                              ---------------------------------------------------
                                                                       641,980          234,597          876,577
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Operating income                                                       118,216           47,457          165,673
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Interest expense and other:
  Interest expense                                                      39,080           12,232           51,312
  Allowance for funds used during construction                          (4,372)            (619)          (4,991)
  Miscellaneous, net                                                    (6,419)             412           (6,007)
                                                              ---------------------------------------------------
                                                                        28,289           12,025           40,314
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Income before income taxes                                              89,927           35,432          125,359
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Income taxes                                                            31,789           14,423           46,212
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Net income                                                              58,138           21,009           79,147
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Preferred dividend requirements                                            686            1,871            2,557
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Earnings available for common stock                                    $57,452          $19,138          $76,590
                                                              ===================================================
- -----------------------------------------------------------------------------------------------------------------



                                       30




                                           INTERSTATE POWER AND LIGHT COMPANY
                                   UNAUDITED PRO FORMA COMBINED STATEMENT OF INCOME
                                     FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000
                                                  (in thousands)


                                                                                                       Pro Forma
                                                                        IESU             IPC            Combined
                                                              ---------------------------------------------------
                                                                                                 
Operating revenues:
  Electric utility                                                    $496,934         $232,719         $729,653
  Gas utility                                                          107,767           28,419          136,186
  Steam                                                                 20,298                -           20,298
                                                              ---------------------------------------------------
                                                                       624,999          261,138          886,137
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Operating expenses:
  Electric and steam production fuels                                   88,440           41,851          130,291
  Purchased power                                                       59,464           50,107          109,571
  Cost of gas sold                                                      68,291           16,953           85,244
  Other operation and maintenance                                      158,865           66,594          225,459
  Depreciation and amortization                                         80,555           26,060          106,615
  Taxes other than income taxes                                         35,562           11,795           47,357
                                                              ---------------------------------------------------
                                                                       491,177          213,360          704,537
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Operating income                                                       133,822           47,778          181,600
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Interest expense and other:
  Interest expense                                                      38,208           11,996           50,204
  Allowance for funds used during construction                          (1,827)            (694)          (2,521)
  Miscellaneous, net                                                    (5,861)          (1,202)          (7,063)
                                                              ---------------------------------------------------
                                                                        30,520           10,100           40,620
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Income before income taxes                                             103,302           37,678          140,980
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Income taxes                                                            43,285           15,910           59,195
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Net income                                                              60,017           21,768           81,785
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Preferred dividend requirements                                            686            1,866            2,552
                                                              ---------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------
Earnings available for common stock                                    $59,331          $19,902          $79,233
                                                              ===================================================
- -----------------------------------------------------------------------------------------------------------------



                                       31


           (c)   Exhibits.
                 --------

           The exhibits  incorporated by reference  herein are set forth on the
           attached Exhibit Index.







                                  SIGNATURES
                                  ----------

           Pursuant  to the  requirements  of the  Securities  Exchange  Act of
1934,  Alliant Energy  Corporation and Interstate  Power and Light Company have
each duly caused this amendment to be signed on its  behalf by the  undersigned
hereunto duly authorized.



                                                           
                                                        ALLIANT ENERGY CORPORATION


Date:  February 20, 2002                      By:  /s/  John E. Kratchmer
                                                   ----------------------
                                                        John E. Kratchmer
                                                        Corporate Controller and Chief Accounting Officer



                                                        INTERSTATE POWER AND LIGHT COMPANY


Date:  February 20, 2002                      By:  /s/  John E. Kratchmer
                                                   ----------------------
                                                        John E. Kratchmer
                                                        Corporate Controller and Chief Accounting Officer




                                       32


                          ALLIANT ENERGY CORPORATION
                      INTERSTATE POWER AND LIGHT COMPANY
                      ----------------------------------

          Exhibit Index to Amendment No. 1 to Current Report on Form 8-K
                             Dated January 1, 2002


Exhibit
- -------

(2.1)   Agreement and Plan of Merger, dated as of March 15, 2000, by
        and between Interstate Power and Light Company (IPL)
        (formerly IES Utilities Inc.) and IPC [Incorporated by
        reference to Exhibit (2.1) to IPL's Registration Statement
        on Form S-4 (Reg. No 333-53846), as amended]

(2.2)   First Amendment to Agreement and Plan of Merger, dated as of
        November 29, 2000, by and between IPL (formerly IES
        Utilities Inc.) and IPC [Incorporated by reference to
        Exhibit (2.2) to IPL's Registration Statement on Form S-4
        (Reg. No 333-53846), as amended]

(3.1)   Amendment to Amended and Restated Articles of Incorporation
        of IPL (formerly IES Utilities Inc.) creating Class A
        Preferred Stock [Incorporated by reference to Exhibit (3.1)
        to Alliant Energy's and IPL's Current Report on Form 8-K,
        dated January 1, 2002]

(3.2)   Amendment to Amended and Restated Articles of Incorporation
        of IPL (formerly IES Utilities Inc.) creating various series
        of Class A Preferred Stock [Incorporated by reference to
        Exhibit (3.2) to Alliant Energy's and IPL's Current Report
        on Form 8-K, dated January 1, 2002]

(3.3)   Amendment to Amended and Restated Articles of Incorporation
        of IPL (formerly IES Utilities Inc.) changing corporate name
        to Interstate Power and Light Company [Incorporated by
        reference to Exhibit (3.3) to Alliant Energy's and IPL's
        Current Report on Form 8-K, dated January 1, 2002]

(3.4)   Amended and Restated Articles of Incorporation of IPL, as
        amended [Incorporated by reference to Exhibit (3.4) to
        Alliant Energy's and IPL's Current Report on Form 8-K, dated
        January 1, 2002]

(4.1)   The Original through the Nineteenth Supplemental Indentures
        of IPL (successor-in-interest to Interstate Power Company)
        to JPMorgan Chase Bank (formerly The Chase Manhattan Bank)
        and James P. Freeman, as Trustees, dated January 1, 1948
        securing First Mortgage Bonds [Incorporated by reference to
        Exhibits 4(b) through 4(t) to IPC's Registration Statement
        (Reg. No. 33-59352) dated March 11, 1993]

(4.2)   Twentieth Supplemental Indenture of IPL
        (successor-in-interest to Interstate Power Company) to
        JPMorgan Chase Bank (formerly The Chase Manhattan Bank) and
        James P. Freeman, as Trustees, dated May 15, 1993
        [Incorporated by reference to Exhibit 4(u) to IPC's
        Registration Statement (Reg. No. 33-59352) dated March 11,
        1993]

(4.3)   Twenty-First Supplemental Indenture of IPL
        (successor-in-interest to Interstate Power Company) to
        JPMorgan Chase Bank (formerly The Chase Manhattan Bank) and
        James P. Freeman, as Trustees, dated December 31, 2001
        [Incorporated by reference to Exhibit (4.3) to Alliant
        Energy's and IPL's Current Report on Form 8-K, dated January
        1, 2002]

                                       33