2.2.0.25falsefalse0204 - Disclosure - Joint Ownership Agreementstruefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Jan-01-2010_Dec-31-2010http://www.sec.gov/CIK0000092122duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseJoint Ownership Agreements [Abstract]3false0us-gaap_ScheduleOfJointlyOwnedUtilityPlantsTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00  <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>4. JOINT OWNERSHIP AGREEMENTS</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">Alabama Power owns an undivided interest in units 1 and 2 of Plant Miller and related facilities jointly with Power South Energy Cooperative, Inc. Georgia Power owns undivided interests in Plants Vogtle, Hatch, Scherer, and Wansley in varying amounts jointly with OPC, MEAG Power, the City of Dalton, Georgia, Florida Power & Light Company, and Jacksonville Electric Authority. In addition, Georgia Power has joint ownership agreements with OPC for the Rocky Mountain facilities and with Florida Power Corporation for a combustion turbine unit at Intercession City, Florida. Southern Power owns an undivided interest in Plant Stanton Unit A and related facilities jointly with the Orlando Utilities Commission, Kissimmee Utility Authority, and Florida Municipal Power Agency. </div>   </div>  <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 0pt"> <b> </b> </div> <div align="left" style="font-size: 10pt; margin-top: 0pt"> <b> </b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">At December 31, 2010, Alabama Power’s, Georgia Power’s, and Southern Power’s percentage ownership and investment (exclusive of nuclear fuel) in jointly owned facilities in commercial operation with the above entities were as follows: </div> <div align="center"> <table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">  <tr valign="bottom"> <td width="64%"> </td> <td width="5%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="5%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="5%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="3%"> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="3"><b>Percent</b></td> <td> </td> <td nowrap="nowrap" align="center" colspan="3"><b>Amount of</b></td> <td> </td> <td nowrap="nowrap" align="center" colspan="3"><b>Accumulated</b></td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td style="border-bottom: 1px solid #000000"> </td> <td style="border-bottom: 1px solid #000000"> </td> <td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Ownership</b></td> <td style="border-bottom: 1px solid #000000"> </td> <td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Investment</b></td> <td style="border-bottom: 1px solid #000000"> </td> <td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Depreciation</b></td> </tr> <tr style="font-size: 8pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="7"><i>(in millions)</i></td> </tr>   <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Vogtle (nuclear) Units 1 and 2 </div></td> <td> </td> <td nowrap="nowrap" align="right"> </td> <td align="right" style="font-weight: bold">45.7</td> <td nowrap="nowrap" style="font-weight: bold">%</td> <td> </td> <td align="right">$</td> <td align="right">3,292</td> <td> </td> <td> </td> <td align="right">$</td> <td align="right">1,935</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Hatch (nuclear) </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">50.1</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">962</td> <td> </td> <td> </td> <td> </td> <td align="right">534</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Miller (coal) Units 1 and 2 </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">91.8</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">1,253</td> <td> </td> <td> </td> <td> </td> <td align="right">477</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Scherer (coal) Units 1 and 2 </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">8.4</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">148</td> <td> </td> <td> </td> <td> </td> <td align="right">74</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Wansley (coal) </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">53.5</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">700</td> <td> </td> <td> </td> <td> </td> <td align="right">208</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Rocky Mountain (pumped storage) </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">25.4</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">175</td> <td> </td> <td> </td> <td> </td> <td align="right">109</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Intercession City (combustion turbine) </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">33.3</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">12</td> <td> </td> <td> </td> <td> </td> <td align="right">3</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Plant Stanton (combined cycle) Unit A </div></td> <td> </td> <td> </td> <td align="right" style="font-weight: bold">65.0</td> <td nowrap="nowrap" style="font-weight: bold"> </td> <td> </td> <td> </td> <td align="right">156</td> <td> </td> <td> </td> <td> </td> <td align="right">25</td> <td> </td> </tr> <tr style="font-size: 1px"> <td colspan="13" align="left" style="border-top: 1px solid #000000"> </td> </tr>  </table> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">At December 31, 2010, the portion of total construction work in progress related to Plants Miller, Scherer, Wansley, and Vogtle Units 3 and 4 was $125 million, $110 million, $11 million, and $1.3 billion, respectively. Construction at Plants Miller, Wansley, and Scherer relates primarily to environmental projects. See Note 3 under “Retail Regulatory Matters – Georgia Power — Nuclear Construction” for information on Plant Vogtle Units 3 and 4. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">Alabama Power, Georgia Power, and Southern Power have contracted to operate and maintain the jointly owned facilities, except for Rocky Mountain and Intercession City, as agents for their respective co-owners. The companies’ proportionate share of their plant operating expenses is included in the corresponding operating expenses in the statements of income and each company is responsible for providing its own financing. </div> </div>  <!-- Begin Block Tagged NotefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes that the entity has a proportionate interest in a jointly owned utility plant. Should include a table showing separately for each interest the amount of plant in service, the accumulated provision for depreciation (if available), the amount of plant under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Should include statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. Should state that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power then should disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C falsefalseJOINT OWNERSHIP AGREEMENTS12Joint Ownership AgreementsUnKnownUnKnownUnKnownUnKnownfalsetrue