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)October 8, 2009

Commission File Number	Registrant, State of Incorporation, Address and Telephone Number	I.R.S. Employer Identification No.
333-98553	Southern Power Company (A Delaware Corporation) 30 Ivan Allen Jr. Boulevard N.W. Atlanta, Georgia 30308 (404) 506-5000	58-2598670

The name and address of the registrant have not changed since the last report.

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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Item 8.01. Other Events.

On October 8, 2009, Southern Power Company (the “Company”) acquired all of the outstanding membership interests of Nacogdoches Power, LLC (“Nacogdoches”) from American Renewables, LLC, the developer of the project described herein. Nacogdoches plans to construct a biomass generating plant in Sacul, Texas with an estimated capacity of 100 megawatts. The generating plant will be fueled from wood waste. Construction is expected to commence in late 2009 and the plant is expected to begin commercial operation in 2012. The total estimated cost of the project is expected to be between $475 million and $500 million. The output of the plant is sold under a power purchase agreement with Austin Energy that begins in 2012 and expires in 2032.

Cautionary Note Regarding Forward-Looking Statements:

Certain information contained in this Current Report on Form 8-K is forward-looking information based on current expectations and plans that involve risks and uncertainties. Forward-looking information includes, among other things, plans and estimated costs for new generation resources for the Company, estimated construction and other expenditures for the Company and completion of the Company’s construction projects. The Company cautions that there are certain factors that can cause actual results to differ materially from the forward-looking information that has been provided. The reader is cautioned not to put undue reliance on this forward-looking information, which is not a guarantee of future performance and is subject to a number of uncertainties and other factors, many of which are outside the control of the Company; accordingly, there can be no assurance that such suggested results will be realized. The following factors, in addition to those discussed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2008, and subsequent securities filings, could cause results to differ materially from management expectations as suggested by such forward-looking information: the impact of recent and future federal and state regulatory change, including legislative and regulatory initiatives regarding deregulation and restructuring of the electric utility industry, implementation of the Energy Policy Act of 2005, environmental laws including regulation of water quality and emissions of sulfur, nitrogen, mercury, carbon, soot, or particulate matter and other substances, and also changes in tax and other laws and regulations to which the Company and its subsidiaries are subject, as well as changes in application of existing laws and regulations; current and future litigation, regulatory investigations, proceedings, or inquiries, including Federal Energy Regulatory Commission matters; the effects, extent, and timing of the entry of additional competition in the markets in which the Company operates; variations in demand for electricity, including those relating to weather, the general economy, population and business growth (and declines), and the effects of energy conservation measures; available sources and costs of fuels; effects of inflation; ability to control costs and cost overruns during the development and construction of facilities; internal restructuring or other restructuring options that may be pursued; potential business strategies, including acquisitions or dispositions of assets or businesses, which cannot be assured to be completed or beneficial to the Company; the ability of counterparties of the Company to make payments as and when due

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and to perform as required; the ability to obtain new short- and long-term contracts with wholesale customers; the direct or indirect effect on the Company’s business resulting from terrorist incidents and the threat of terrorist incidents; interest rate fluctuations and financial market conditions and the results of financing efforts, including the Company’s credit ratings; the ability of the Company to obtain additional generating capacity at competitive prices; catastrophic events such as fires, earthquakes, explosions, floods, hurricanes, droughts, pandemic health events such as an avian or other influenza, or other similar occurrences; the direct or indirect effects on the Company’s business resulting from incidents similar to the August 2003 power outage in the Northeast; and the effect of accounting pronouncements issued periodically by standard setting bodies. The Company expressly disclaims any obligation to update any forward-looking information.

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 hereunto duly authorized.

Date: October 9, 2009	SOUTHERN POWER COMPANY
	By                    /s/Melissa K. Caen Melissa K. Caen Assistant Secretary