SECURITIES AND EXCHANGE COMMISSION

                             Washington, D. C. 20549

                                   FORM 8-K/A

                                 CURRENT REPORT

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

       Date of Report (Date of earliest event reported) December 19, 2000
                     ---------------------------------------

                               Mirant Corporation
             (Exact name of registrant as specified in its charter)

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          Delaware                 001-16107               58-2056305
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 (State or other jurisdiction   (Commission File   (IRS Employer Identification
         of incorporation)          Number)                  No.)


          1155 Perimeter Center West Suite 100, Atlanta, Georgia 30338
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               (Address of principal executive offices) (Zip Code)


        Registrant's telephone number, including area code (678) 579-5000
                          -----------------------------


                                       N/A
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         (Former name or former address, if changed since last report.)






Item 2. Acquisition or Disposition of Assets.

On December 19, 2000, Mirant  Corporation  formally  Southern Energy, Inc., (the
Company),  through its  subsidiaries  and  together  with lessors in a leveraged
lease transaction, closed the asset purchase from Potomac Electric Power Company
(PEPCO) of PEPCO's generation assets in Maryland and Virginia.  The net purchase
price for these  acquisitions  was  approximately  $2.75 billion which  includes
working  capital and capital  expenditures  of  approximately  $100  million and
approximately $1.5 billion provided by a leveraged lease transaction. As part of
the acquisition, the Company also assumed net liabilities,  primarily transition
power   agreements  and  obligations   under  power  purchase   agreements,   of
approximately $2.4 billion.

    The acquired assets consist primarily of four generating stations:

    o   the 1,412 MW coal and oil-fired  Morgantown  station  located in Charles
        County, Maryland, approximately 50 miles from Washington, D.C.,

    o   the 2,423 MW coal,  oil and  gas-fired  Chalk Point  station  located in
        Prince  George's   County,   Maryland,   approximately   45  miles  from
        Washington,  D.C.,  including  the  assignment  of  PEPCO's  rights  and
        obligations to the 84 MW Southern  Maryland Electric  Cooperative,  Inc.
        combustion turbine located at the Chalk Point station site,

    o   the 837 MW coal, oil and gas-fired Dickerson station located in upper
        Montgomery County, Maryland, approximately 30 miles from
        Washington, D.C., and

    o   the 482 MW  coal-fired  Potomac  River  station  located in  Alexandria,
        Virginia, in close proximity to Washington, D.C.

In  addition  to  the  electric   generating   stations  described  above,  the
Company,  through  subsidiaries,  also acquired  three separate coal ash storage
areas, a 51.5 mile oil pipeline serving the Chalk Point and Morgantown stations,
and an engineering and  maintenance  service  facility and related  assets.  The
Company also entered into a lease of the land on which the Potomac River station
is located,  power sales  agreements  with PEPCO under two  separate  transition
power agreements with terms of up to four years, a local area support  agreement
with PEPCO  requiring  the  Potomac  River  station to operate  for  purposes of
supporting a local load pocket, a three-year operation and maintenance agreement
for PEPCO's two generating stations located in the District of Columbia (Benning
and  Buzzard  Point)  and  the  assumption  of five of  PEPCO's  power  purchase
agreements  totaling 735 MW (Ohio Edison,  Panda-Brandywine,  Northeast Maryland
Waste Disposal  Authority,  Prince  George's  County  Detention  Center and Gude
Landfill).  The Company's  rights to acquire the assets were assigned to certain
of the Company's  subsidiaries and the Company executed and delivered to PEPCO a
parent  guarantee to support the obligations of  subsidiaries  under the project
agreements.  In addition,  as part of the acquisition,  approximately  950 PEPCO
employees became employees of the Company.

The  acquired  assets  are  spread across the PJM Interconnection  market, which
encompasses all or a part of Pennsylvania,  New Jersey,  Maryland,  Virginia and
the  District  of  Columbia.  The  PJM  Interconnection  market  is the  largest
centrally-dispatched  power pool in the United States.  The PJM  Interconnection
enables  participants  to buy and sell energy and ancillary  services,  schedule
bilateral transactions and reserve transmission service.

The  PEPCO  assets provide  a range  of capacity across the PJM  Interconnection
dispatch curve. There is approximately  2,700 MW of baseload capacity,  1,400 MW
of cycling capacity, and 1,055 MW of peaking capacity. Likewise, there is a wide
range of fuels consumed at the facilities,  and  approximately  94% of the total
generating capacity can burn multiple fuels.

As part  of the  acquisition, the Company  entered  into two separate transition
power agreements with PEPCO to provide energy,  capacity and ancillary  services
to PEPCO's default retail  customers.  One of the transition power agreements is
for service to PEPCO's default customers in Maryland and has a term through June
30, 2004. The other transition power agreement is for service to PEPCO's default
customers in the District of Columbia and expires  December 18, 2004. Under both
transition  power  agreements,  the Company is obligated to provide capacity and
ancillary services for the entire term. The Company is also obligated under both
contracts to provide 100% of the energy requirements for the first contract year
and 75% of the energy  requirements  for the second contract year.  Beginning in
the second contract year, PEPCO has the option of purchasing  additional  energy
requirements  in 25% increments up to the level  purchased in the prior contract
year. PEPCO's current peak demand requirements for the existing retail customers
are  approximately  5,300 MW.  With a total  generation  portfolio  of 5,889 MW,
including the power  purchase  agreements,  these  transition  power  agreements
provide a  significant  portion of the  Company's  revenues for the first two to
four years and thereby  mitigate the market price  volatility  risk. The pricing
for these services in each of the agreements is below current market prices.

Under  the  asset   purchase  and  sale  agreement,  the  Company   assumed  the
obligations and benefits of five power purchase agreements with a total capacity
of 735 MW. Three of the power purchase agreements (Ohio Edison, Panda-Brandywine
and Northeast Maryland Waste Disposal Authority) represent 730 MW.

In  connection   with   the   acquisition,  the   Company  entered  into  credit
agreements with a syndicate of banks led by Credit Suisse First Boston, New York
Branch, as arranger, and seven other banks that provided the following:

o two facilities to Mirant Americas Generation, Inc., the Company's wholly-owned
  subsidiary,  totaling  $1.02  billion  with  recourse  to SE North  America
  Generating

o one facility of $650 million to the Company with recourse to the Company

In addition, the Company entered into leveraged lease transactions that provided
$1.5 billion of the  purchase  price at closing.  Equity  funding by third party
owner lessors  provided  approximately  $299  million.  The issuance and sale of
three series of  certificates  pursuant to a 144A offering  raised the remaining
$1.22 billion of lease debt.  Under the leveraged lease financing  arrangements,
the owner lessors acquired the Dickerson and Morgantown  baseload facilities and
leased these  facilities  to a subsidiary  of the Company  under long term lease
agreements.  The leases will be treated as  operating  leases for book  purposes
whereby one of the  Company's  subsidiaries  will record  periodic  lease rental
expenses.

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.

(a)   Financial Statements of the businesses acquired.   N/A

(b)   Pro forma financial information.

The  following  unaudited  pro forma  condensed  consolidated  balance sheet and
consolidated   statements  of  income  are  presented  to  give  effect  to  the
acquisition by Mirant,  through its  subsidiaries and together with lessors in a
leveraged  lease  transaction,  of PEPCO's  generation  assets in  Maryland  and
Virginia.

The unaudited pro forma condensed consolidated balance sheet as of September 30,
2000 included herein assumes that the acquisition of PEPCO's  generation  assets
in Maryland and Virginia was  consummated  on September 30, 2000.  The unaudited
pro forma consolidated  statements of income for the nine months ended September
30, 2000 and the year ended December 31, 1999 give effect to the  acquisition of
PEPCO's  generation assets as if the transaction had been consummated on January
1, 1999.  PEPCO's  operating  results  included in the pro forma  statements  of
income for the nine months ended  September 30, 2000 and the year ended December
31,  1999 are for the periods  January 1, 2000  through  September  30, 2000 and
January 1, 1999 through December 31, 1999, respectively. The unaudited pro forma
condensed  consolidated balance sheet and consolidated  statements of income are
based upon preliminary fair value allocations related to the purchase of PEPCO's
generation  assets.  Historically,  PEPCO did not operate its generating  assets
collectively  as a stand alone  business  and did not  operate  the  Maryland or
Virginia plants as separate reporting entities;  therefore, the purchased assets
do not have historical financial  statements.  Rather, as is often the case with
fully integrated U.S. electric utilities, PEPCO accounted for all of its revenue
and a significant portion of its expenses on a bundled basis (that is, including
all of the functions of a vertically integrated electric utility).  Accordingly,
PEPCO  management  has  created   carve-out  income  statements  (which  include
substantial  allocations,  many of which were  subjective  and  material) of the
purchased  generating assets.  While significant  expense  allocations have been
made  utilizing  methods   traditionally   acceptable  in  carve-out   financial
statements,  the revenue allocation  methodology applied was subjective as it is
not possible to specifically  identify and distribute  PEPCO's bundled  revenues
among  its  generation,   transmission,   distribution   and  customer   support
operations.

Mirant has included these financial statements prepared by PEPCO's management in
the Company's unaudited pro forma consolidated statements of income for the nine
months ended September 30, 2000 and the year ended December 31, 1999. As part of
these pro forma financial statements, Mirant has provided detailed disclosure of
the direct and allocated expenses  associated to the generating assets acquired,
as well as  allocated  revenues  and  detailed  disclosure  of the nature of the
allocation  methods used. Due to this, the stand alone  statements of income for
the PEPCO  generation  assets cannot be opined on by independent  accountants as
being prepared under accounting  principles  generally  accepted in the U.S. and
can not be audited under generally accepted auditing standards in the U.S.

The  purchase  price  allocations  are subject to revision  after more  detailed
analyses, appraisals and evaluations are completed. The pro forma information is
presented for illustrative  purposes only and is not indicative of the operating
results that would have occurred if the PEPCO  acquisition had been  consummated
at the  beginning  of the  period  specified,  nor is it  indicative  of  future
operating  results.  The  unaudited  pro forma  financial  statements  and notes
thereto  included  herein  should  be read in  conjunction  with  the  Company's
Quarterly Report on Form 10-Q for the quarter ended September 30, 2000 (filed on
November 14, 2000) which, is incorporated herein by reference. Reference is also
made to the section  entitled  "Report of Independent  Accountants and Financial
Statements of "Southern Energy,  Inc and  Subsidiaries"  (pages F-16 to F-65) in
the  prospectus  filed on Form S-1  (Registration  No.  333-35390),  by Southern
Energy, Inc., with the SEC on September 27, 2000.






                                                    Mirant Corporation
                                Unaudited Pro Forma Consolidated Statement of Income (A)
                                        For the Nine Months Ended September 30, 2000
                                                      (in millions)

                                                                       Carve-out
                                                Historical       PEPCO                             Mirant
                                                  Mirant       Generating         Pro Forma      Corporation
                                                Corporation      Assets          Adjustments      Pro Forma
                                             --------------------------------------------------------------

                                                                                          
Operating Revenues                                 $5,473        $1,015  (B)                        $6,488
Operating Expenses:
Cost of fuel, electricity and other products        3,965           625  (C)                         4,590
Maintenance                                           104            78  (D)                           182
Depreciation and amortization                         244            48  (E)            16  (F)        308
Selling, general, and administrative                  438            14  (G)                           452
Other                                                 194            71  (I)           132  (H)        397
                                             ------------   -----------       ------------       ---------
     Total operating expenses                       4,945           836                              5,929
                                             ------------   -----------       ------------       ---------
Operating Income                                      528           179                                559
Other Income (Expense):
Interest income                                       123             -                                123
Interest expense                                     (462)          (49) (J)           (24) (K)       (535)
Net gain on sales of assets                            18             -                                 18
Equity in income of affiliates                        132             -                                132
Other, net                                             49            (3) (M)                            46
                                             ------------   -----------       ------------       ---------
     Total other income (expense)                    (140)          (52)                              (216)
                                             ------------   -----------       ------------       ---------
Income From Continuing Operations Before
     Income Taxes and Minority Interest               388           127                                343
Provision (benefit) for income taxes                   56            52  (N)           (60) (O)         48
Minority Interest                                      60             -                                 60
                                             ------------   -----------       ------------       ---------
Income From Continuing Operations                    $272           $75                               $235
                                             ============   ===========       ============       =========

See Notes to Unaudited Pro Forma Financial Statements







                                                       Mirant Corporation
                                    Unaudited Pro Forma Consolidated Statement of Income (A)
                                              For the Year Ended December 31, 2000
                                                         (in millions)

                                                                       Carve-out
                                               Historical       PEPCO                              Mirant
                                                 Mirant       Generating         Pro Forma      Corporation
                                               Corporation      Assets          Adjustments      Pro Forma
                                            --------------------------------------------------------------

                                                                                           
Operating Revenues                                $2,268        $1,217  (B)                         $3,485
Operating Expenses:
Cost of fuel, electricity and other products         937           738  (C)                          1,675
Maintenance                                          116           106  (D)                            222
Depreciation and amortization                        270            62  (E)            25  (F)         357
Selling, general, and administrative                 253            26  (G)                            279
Write-down of Assets                                  60             -                                  60
Other                                                188            86  (I)           210  (H)         484
                                              ----------   -----------       ------------       ----------
     Total operating expenses                      1,824         1,018                               3,077
                                              ----------   -----------       ------------       ----------
Operating Income                                     444           199                                 408
Other Income (Expense):
Interest income                                      172             -                                 172
Interest expense                                    (502)          (60) (J)           (27) (K)        (589)
Net gain on sales of assets                          313             -                                 313
Equity in income of affiliates                       111             1                 (1) (L)         111
Receivables recovery                                  64             -                                  64
Other, net                                            72            (2) (M)                             70
                                              ----------   -----------       ------------       ----------
     Total other income (expense)                    230           (61)                                141
                                              ----------   -----------       ------------       ----------
Income From Continuing Operations Before
     Income Taxes and Minority Interest              674           138                                 549
Provision (benefit) for income taxes                 129            54  (N)           (92) (O)          91
Minority Interest                                    183             -                                 183
                                              ----------   -----------       ------------       ----------
Income From Continuing Operations                   $362           $84                                $275
                                              ==========   ===========       ============       ==========

See Notes to Unaudited Pro Forma Financial Statements






                                                       Mirant Corporation
                                     Unaudited Pro Forma Condensed Consolidated Balance Sheet
                                                       September 30, 2000
                                                          (in millions)
                                                                              (P)               Mirant
                                                          Mirant           Pro Forma         Corporation
                                                       Corporation        Adjustments         Pro Forma
                                                      ---------------  ------------------  -----------------
ASSETS
                                                                                         
Total Current Assets                                       $4,212                $458             $4,670
Property, Plant and Equipment, net                          5,969               1,413              7,382
Noncurrent Assets:
Notes and other receivables, less provision for
uncollectibles of $30                                       1,814                   -              1,814
Goodwill, net of accumulated amortization of $202           2,256               1,306              3,562
Other noncurrent assets                                     3,464                 716              4,180
                                                     -------------  ------------------  -----------------
     Total noncurrent assets                                7,534               2,022              9,556
                                                     -------------  ------------------  -----------------
     Total assets                                         $17,715              $3,893            $21,608
                                                     =============  ==================  =================

LIABILITIES AND STOCKHOLDER'S EQUITY
Current Liabilities:
Short-term debt                                            $3,521                   -             $3,521
Accounts payable                                            1,978                   -              1,978
Other current liabilities                                   1,723               2,183              3,906
                                                     -------------  ------------------  -----------------
     Total current liabilities                              7,222               2,183              9,405
Noncurrent Liabilities:
Notes payable                                               4,102                   -              4,102
Other noncurrent liabilities                                2,789               1,710              4,499
                                                     -------------  ------------------  -----------------
     Total noncurrent liabilities                           6,891               1,710              8,601

Minority Interest in Subsidiary Companies                     675                   -                675

Stockholder's Equity
Additional paid in capital                                  2,687                   -              2,687
Other shareholder's equity                                    131                   -                131
Retained earnings                                             109                   -                109
                                                     -------------  ------------------  -----------------
     Total stockholders' equity                             2,927                   -              2,927
                                                     -------------  ------------------  -----------------
     Total liabilities and stockholder's equity           $17,715              $3,893            $21,608
                                                     =============  ==================  =================

See Notes to Unaudited Pro Forma Financial Statements



               Notes to Unaudited Pro Forma Financial Statements.

(A) The pro forma  consolidated  statements of income for the periods presented
    reflect  the  historical  results of  operations  for  Mirant  and  PEPCO's
    carved-out   Maryland  and  Virginia   generation   assets   acquired  with
    adjustments related to the preliminary allocation of fair values for assets
    acquired and liabilities assumed.

(B) PEPCO non-fuel base rate revenue was allocated to the generation  assets so
    that the  earned  rate of return  among all of  PEPCO's  business  segments
    (generation,  transmission and distribution) was the same. Fuel revenue and
    other revenue was directly allocated to the generating assets to the extent
    they related to the assets.

(C) Fuel and interchange  costs were assigned directly to the generating assets
    to the extent they related directly to the assets.  Capacity purchase costs
    were assigned 100% to the generating assets.

(D) Maintenance  costs were assigned  directly to the generating  assets to the
    extent they related directly to the assets.

(E) Depreciation  and  amortization  expenses  were  assigned  directly  to the
    generating assets to the extent they related directly to the assets.

(F) To adjust  depreciation  expense and record goodwill and other  intangibles
    amortization  based  on the  preliminary  estimated  fair  value of the net
    assets acquired. The acquired assets have a weighted average useful life of
    approximately  32 years.  Goodwill and capacity  addition  rights are being
    amortized over 40 years,  marketing and trading rights are being  amortized
    over 40 years,  and installed  capacity credits are being amortized over 20
    years.

(G) Operations  costs were assigned  directly to the  generating  assets to the
    extent they related directly to the assets.

(H) To record lease expense  resulting  from Mirant's  operating  leases for the
    Dickerson and Morgantown baseload facilities.

(I) Other  operations  maintenance  costs that were  corporate  in nature  were
    allocated to the  generating  assets  based on the ratio of net  generation
    property and plant to total PEPCO net property and plant.

(J) Net interest  expense was allocated to the  generating  assets based on the
    ratio of net generation  property and plant to total PEPCO net property and
    plant.

(K) To adjust  interest  expense on  existing  PEPCO  debt that  Mirant did not
    assume as part of the acquisition  resulting in a reduction in interest for
    the nine months ended  September 30, 2000 and twelve months ended  December
    31, 1999 of $49 million and $60 million, respectively.

    To record interest expense for the nine months ended September 30, 2000 and
    twelve  months  ended  December  31, 1999 of $73  million and $87  million,
    respectively,  assuming that the PEPCO generation assets were acquired with
    short-term  borrowings at the Company's effective average borrowing rate of
    7.2 percent and 6.4 percent, respectively.

(L) To eliminate equity in income of PEPCO affiliates.

(M) Other taxes were assigned  directly to the  generating  assets to the extent
    they related to the assets.

(N) Income  taxes were  allocated  on the ratio of  generating  assets pro forma
    taxable income to total PEPCO taxable income.

(O) To reflect the estimated tax effect of the pro forma adjustments.

(P) To  reflect  balances  related to the  acquired  PEPCO  generating  assets,
    excluding  the  assets  subject  to the  leveraged  lease  transaction,  at
    closing.



                                    SIGNATURE

                Pursuant to the  requirements of the Securities  Exchange Act of
1934,  the  registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.


Date: February 28, 2001                              SOUTHERN ENERGY, INC.



                                                  By /s/ James A. Ward
                                                  ------------------------------
                                                  James A. Ward
                                                  Senior Vice President, Finance
                                                  And Accounting
                                                  (Principal Accounting Officer)