UNITED STATES
                SECURITIES AND EXCHANGE COMMISSION
                     Washington, D. C.  20549

                             FORM 8-K

                          CURRENT REPORT


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

    Date of Report (Date of Earliest Event Reported): June 9, 1999



  Commission Registrant; State of
  File 		 Incorporation;                    IRS Employer
  Number     Address; and Telephone Number     Identification Number
  -------    -----------------------------     ---------------------

  1-13739   UNISOURCE ENERGY CORPORATION       86-0786732
            (An Arizona Corporation)
            220 West Sixth Street
            Tucson, AZ  85701
            (520) 571-4000

  1-5924    TUCSON ELECTRIC POWER COMPANY      86-0062700
            (An Arizona Corporation)
            220 West Sixth Street
            Tucson, AZ  85701
            (520) 571-4000

 




Item 5.  Other Events
- ---------------------

  Settlement Agreement
  --------------------

    On  June  9, 1999, Tucson Electric Power (TEP) entered  into  a
Settlement  Agreement  (Settlement) with  certain  customer  groups
related to the implementation of retail electric competition.   The
Settlement  has been filed with the Arizona Corporation  Commission
(ACC), and TEP has requested the ACC to schedule the Settlement for
review   as  soon  as  practicable.   The  Settlement  will  become
effective  on  the  issuance of a final  ACC  order  approving  the
Settlement without modification.

  The  following are major provisions of the Settlement,  which  is
filed as an exhibit to this filing:

  -- Consumer  choice for energy supply will begin sixty  (60)  days
     after the ACC approves the Settlement and will be phased in as
     required  by the retail electric competition rules  previously
     described in Management's Discussion and Analysis of Financial
     Condition and Results of Operation in the Quarterly Report on Form
     10-Q for the quarterly period ended March 31, 1999.  By January 1,
     2001, consumer choice will be available to all customers.

  -- TEP rates will be frozen from July 1, 2000 through December 31,
     2008, providing TEP with the opportunity to recover its stranded
     costs, including regulatory assets.  The ACC will authorize  a
     Competition Transition Charge (CTC) with two parts - a "Fixed" CTC
     and a "Floating" CTC.

     -  The Fixed CTC will equal $0.93/kwh (average) and will include
        recovery of regulatory assets.  The Fixed CTC will terminate when
        $450 million has been recovered, but will in no case extend beyond
        December 31, 2008.  When the Fixed CTC terminates, unbundled
        service rates will be reduced by the same amount.

     - The Floating CTC recovers stranded costs that are not recovered
        through the Fixed CTC.  The Floating CTC is determined by the
        difference between the frozen rate and all other rate charges as
        listed below.  The Floating CTC will be calculated using a Market
        Generation Credit (MGC) approach which adjusts the floating CTC as
        the price of energy in the power markets fluctuates.  Because TEP's
        total retail rate is frozen, the Floating CTC recoups the revenue
        shortfall: when market prices are strong, stranded costs are lower
        and, thus, the Floating CTC is lower; and when market prices are
        weak, stranded costs are greater and the Floating CTC is higher.
        The Floating CTC will terminate on December 31, 2008.

  -- TEP's  rates will be unbundled into separate charges  for:   1)
     distribution;  2) transmission; 3) metering;  4)  billing;  5)
     ancillary  services; 6) fixed must-run generation;  7)  system
     benefits; and 8) standard offer generation.  The total of these
     charges will not be more than a customer's current bundled rates.
     All customers will be charged unbundled rates, including those
     customers who are not initially eligible for competition.  For
     TEP's standard offer customers, the CTC will be included in the
     cost of standard offer generation service.

  -- In accordance with the Rate Settlement Agreement approved by the
     ACC in 1998, TEP will decrease rates to retail customers by one
     percent (1%) on July 1, 1999 and one percent (1%) on July 1, 2000.
     These  reductions will apply to all tariffed retail customers.
     After these reductions, the Settlement provides that TEP's rates
     will be frozen until December 31, 2008, except for:



     - changes that result due to this Settlement;
     - changes in TEP's transmission tariffs due to the implementation
       of the Arizona Independent System   Administrator (AISA);
     - changes resulting from the June 2004 review as described below.

  -- By  June  1,  2004 TEP will recommend to the ACC  any  required
     modifications to the CTCs and other service charges.   A  rate
     change, to take effect no later than January 1, 2005, will only be
     made if it results in a net reduction to overall charges.

  -- On or before December 31, 2002, TEP will transfer its generation
     and other competitive assets to a subsidiary of TEP, at market
     value.  At the time that TEP makes the transfer of such assets, it
     will  be required to provide generation for its standard offer
     customers according to the ACC's electric competition rules.

  -- On final approval of the Settlement by the ACC, TEP will move to
     dismiss all pending litigation brought by TEP against the ACC.

  When  the  final ACC order is approved, TEP will stop  accounting
for  its  generation operations using Financial Accounting Standard
No. 71, "Accounting for the Effects of Certain Types of Regulation"
(FAS  71).  The  regulatory  assets  of  the  generation  business,
together with certain above-market generation plant costs, totaling
$450  million, will be recovered through the distribution business.
No  net  gain  or  loss to TEP or UniSource Energy results.   These
regulatory  assets will amortize to expense over the period  ending
in 2008, as provided for in the Settlement Agreement.

  In addition, if the Settlement is approved we will immediately
recognize as income the following Investment Tax Credit (ITC)
amounts:

  -- Deferred ITC:  On our financial statements we have deferred the
     benefit relating to ITC claimed on tax returns.  This Deferred ITC
     was then amortized to income over the tax lives of the related
     property.  The balance remaining when the Settlement is approved
     will be recognized immediately.  At March 31, 1999, the Deferred
     ITC balance was $9.7 million.

  -- ITC Carryforward: This ITC is generated but not yet claimed on a
     tax return, and will be recognized immediately as income to the
     extent that we expect to use the ITC on future tax returns.  At
     March 31, 1999, the total ITC Carryforward was $23 million.  The
     amounts expected to be used on future returns have not presently
     been determined.

  Certain  other  generation expenses, such as lease expense,  will
amortize differently in the future, although total amounts of  such
expenses will remain the same over the life of the leases.



  Overall,  earnings will increase in 1999, primarily as  a  result
of the recognition of the ITC described above, and earnings will be
reduced in the next few subsequent years, primarily as a result  of
the  changes  in  ceasing  to apply FAS 71  to  generation  related
assets.   However, TEP expects that such earnings reductions  could
be offset and its earnings power retained provided:

  - customer  growth  in TEP's service territory continues  at  its
    current pace, about 2% to 3% annually;

  - margins on wholesale sales grow as market prices increase  over
    time in the region; and

  - a portion of free cash flow is used to reduce TEP's debt.

  The  table  below illustrates the anticipated impact on  TEP  and
UniSource  Energy's income statements in 1999-2001 from ceasing  to
apply  FAS  71 to our generation operations.  The table shows  only
expense item changes.

  This  analysis reflects TEP's Settlement filed with  the  ACC  on
June  9, 1999, as originally filed, and assumes that the Settlement
is  approved  by  year end 1999.  The analysis involves  estimates;
actual  results  in  the  future may differ materially  from  those
expressed below.  TEP's analysis is expressed in good faith and  is
believed by management to have reasonable basis, including  without
limitation,  examination  of  historical  operating  trends,   data
contained  in  TEP's  records and other data available  from  third
parties.  There can be no assurance that the Settlement filed  with
the  ACC  will  be  accepted as filed or that key  assumptions  and
related events will be realized.

  For  additional information regarding the accounting implications
from ceasing to account for the generation operations in accordance
with  FAS  71, see Note 2, TEP's Regulatory Assets and Liabilities,
of  Notes to Financial Statements contained in the Annual Report on
Form 10-K for 1998.



            Summary of Anticipated Expense Item Changes

                                       1999   2000    2001
                                       ----   ----    ----
                                       - millions of dollars -
Operating Expenses -
  increases/(decreases)

  Fuel & Purchased Power (a)          $ (4)   $(14)   $(14)
  Impact of changes in generation
  asset accounting methodologies (b)   (10)    (50)    (46)

  Stranded Asset Amortization (c)        4      17      21
  Income Taxes (d)                      (1)     (4)     (6)
                                       --------------------
     Total Operating Expenses          (11)    (51)    (45)
                                       --------------------

Operating Income -
  increase/(decrease)                   11      51      45

  Other Income -
    Income Taxes: ITCs (e)              30      (4)     (5)

Interest Expense - increase/(decrease)
  Capital Lease "interest method"
    interest expense (f)                23       92     91
  Interest on Losses recorded at
    present value (g)                   (9)     (35)   (37)
                                        -------------------
     Total Interest Expense             14       57     54
                                        -------------------
      After-tax impact                $ 27     $(10)  $(14)
                                        ===================

(a)   This  item  may  decrease to reflect the reclassification  of
  certain expenses presently classified as fuel expense to other line
  items of expense.  After we stop applying FAS 71 to our generation
  operations, the lease costs for the coal handling facility  lease
  will be reflected as depreciation expense and interest expense in
  the income statement, rather than operating lease expense.  Also,
  the  fuel  contract termination fee is presently capitalized  and
  amortized  to  fuel  expense  in accordance  with  ACC  and  FERC
  directives.   Post-FAS 71, the amortization of this  fee  may  be
  included  with  the amortization of other regulatory  assets  for
  financial statement presentation purposes.

(b)   This item reflects changes in accounting for leased and owned
  generating assets after we stop applying FAS 71 to our generation
  operations.  These changes include:

  - recognizing depreciation expense rather than lease expense for
    capital lease assets;
  - eliminating the amortization of the Springerville Unit 1
    Allowance contra asset which is offset against the Stranded Assets;
    and
  - reducing amortization and depreciation expense due to the write-
    down of generation plant assets.

(c)   This  is  a  new  amortization expense  item  resulting  from
  reclassifying  all  generation-related  regulatory  assets  to  a
  stranded cost regulatory asset totaling a net $414 million.   The
  $450 million of stranded costs includes $414 million presently on
  the balance sheet and $36 million which has already been expensed
  for financial statement purposes.



(d)   This  item  reflects the expected 40% composite  federal  and
  state tax benefit from all the other changes in expense noted  in
  the table.

(e)    TEP  expects  to  recognize all deferred  ITC  and  all  ITC
  carryforward  expected  to be used within  the  ITC  carryforward
  period,  when  TEP  stops  applying  FAS  71  to  its  generation
  operations.  The 1999 amount in the table represents  TEP's  best
  estimate  of  the  amount recognizable and may change  materially
  before  the  settlement is approved.  For years after  1999,  the
  reduction in ITC reflects the elimination of amortization of ITC.

(f)    Interest  expense  on  the  balance  of  the  capital  lease
  liabilities will be recognized as a component of interest expense
  on  the  income statement after TEP stops applying FAS 71 to  its
  generation operations.

(g)   This  item  is  imputed interest expense and relates  to  the
  Springerville Unit 1 Allowance.  The imputed interest expense  is
  eliminated since the Springerville Unit 1 Allowance is reclassified
  to offset Stranded Assets.



  Supreme Court Decision
  ----------------------

  In  a separate issue, on June 9 the Arizona Supreme Court removed
Commissioner  Tony West from the ACC.  Mr. West held a  Commission-
issued  securities license when elected November 3, 1998.   Arizona
state  law  prohibits the election of a person to the  ACC  who  is
subject  to  regulation by the Commission.   The  Court's  decision
returns  former Commissioner Renz Jennings to the Commission  until
the  Governor  appoints  a  successor to serve  until  the  general
election in 2000.  The Court also stated that no rulings where  Mr.
West cast the deciding vote would be disturbed.



 Item 7.  Financial Statements and Exhibits
 ------------------------------------------
    Exhibit 10      Settlement Agreement




                             SIGNATURE
                             ---------


     Pursuant to the requirements of the Securities Exchange Act of
1934, each registrant has duly caused this report to be signed on
its behalf by the undersigned thereunto duly authorized.  The
signature for each undersigned company shall be deemed to relate
only to matters having reference to such company or its subsidiary.



                                   UniSource Energy Corporation
                                           (Registrant)


Date:  June 18, 1999                 /s/ Karen G. Kissinger
                                     ---------------------------
                                     Karen G. Kissinger
                                     Principal Accounting Officer



                                     Tucson Electric Power
                                         (Registrant)



Date:  June 18, 1999                 /s/ Karen G. Kissinger
                                     ---------------------------
                                     Karen G. Kissinger
                                     Principal Accounting Officer