filings.toolsItem 2. PROPERTIES
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Item 2. PROPERTIES
Electric
At December 31, 2022, the traditional electric operating companies, Southern Power, and SEGCO owned and/or operated the generating facilities listed in the table below. The traditional electric operating companies have certain jointly-owned generating stations. For these facilities, the nameplate capacity shown represents the Registrant's portion of total plant capacity, with ownership percentages provided if less than 100%. See "Jointly-Owned Facilities" and "Titles to Property" herein and Note 5 to the financial statements under "Joint Ownership Agreements" in Item 8 herein for additional information.
| Company/Facility Type**(a)****/Facility Name/** Ownership Percentage | Location | Nameplate Capacity (KWs) | |||||||||
| Alabama Power**(b)** | |||||||||||
| Coal | |||||||||||
| Barry Unit 5 | Mobile, AL | 700,000 | |||||||||
| Gaston Unit 5 | Wilsonville, AL | 880,000 | |||||||||
| Miller (95.92%) | Birmingham, AL | 2,532,288 | |||||||||
| Total Coal | 4,112,288 | ||||||||||
| Natural Gas | |||||||||||
| Combined Cycle: | |||||||||||
| Barry Units 6 and 7 | Mobile, AL | 1,070,424 | |||||||||
| Central Alabama Generating Station | Autauga County, AL | 885,000 | |||||||||
| Combustion Turbine: | |||||||||||
| Calhoun Generating Station | Calhoun County, AL | 748,000 | |||||||||
| Greene County | Demopolis, AL | 720,000 | |||||||||
| Steam: | |||||||||||
| Barry Units 1, 2, and 4 | Mobile, AL | 600,000 | |||||||||
| Greene County Units 1 and 2 (60%) | Demopolis, AL | 300,000 | |||||||||
| Total Natural Gas | 4,323,424 | ||||||||||
| Nuclear | |||||||||||
| Farley | Dothan, AL | 1,720,000 | |||||||||
| Hydro | |||||||||||
| Bankhead | Holt, AL | 53,985 | |||||||||
| Bouldin | Wetumpka, AL | 225,000 | |||||||||
| Harris | Wedowee, AL | 132,000 | |||||||||
| Henry | Ohatchee, AL | 72,900 | |||||||||
| Holt | Holt, AL | 46,944 | |||||||||
| Jordan | Wetumpka, AL | 100,000 | |||||||||
| Lay | Clanton, AL | 177,000 | |||||||||
| Lewis Smith | Jasper, AL | 157,500 | |||||||||
| Logan Martin | Vincent, AL | 135,000 | |||||||||
| Martin | Dadeville, AL | 182,000 | |||||||||
| Mitchell | Verbena, AL | 170,000 | |||||||||
| Thurlow | Tallassee, AL | 81,000 | |||||||||
| Weiss | Leesburg, AL | 87,750 | |||||||||
| Yates | Tallassee, AL | 47,000 | |||||||||
| Total Hydro | 1,668,079 |
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| Company/Facility Type**(a)****/Facility Name/** Ownership Percentage | Location | Nameplate Capacity (KWs) | |||||||||
| Cogeneration | |||||||||||
| Lowndes County | Burkeville, AL | 104,800 | |||||||||
| Theodore | Theodore, AL | 236,418 | |||||||||
| Washington County | Washington County, AL | 123,428 | |||||||||
| Total Cogeneration | 464,646 | ||||||||||
| Solar | |||||||||||
| Anniston Army Depot | Dale County, AL | 7,380 | |||||||||
| Fort Rucker | Calhoun County, AL | 10,560 | |||||||||
| Total Solar | 17,940 | ||||||||||
| Total Alabama Power Generating Capacity | 12,306,377 | ||||||||||
| Georgia Power | |||||||||||
| Natural Gas | |||||||||||
| Combined Cycle: | |||||||||||
| McDonough-Atkinson Units 4 through 6 | Atlanta, GA | 2,520,000 | |||||||||
| McIntosh Units 10 and 11 | Effingham County, GA | 1,318,920 | |||||||||
| Combustion Turbine: | |||||||||||
| McDonough Unit 3 | Atlanta, GA | 78,800 | |||||||||
| McIntosh Units 1 through 8 | Effingham County, GA | 640,000 | |||||||||
| McManus | Brunswick, GA | 481,700 | |||||||||
| Robins | Warner Robins, GA | 158,400 | |||||||||
| Wilson | Augusta, GA | 354,100 | |||||||||
| Steam: | |||||||||||
| Yates | Newnan, GA | 700,000 | |||||||||
| Total Natural Gas | 6,251,920 | ||||||||||
| Coal | |||||||||||
| Bowen | Cartersville, GA | 3,160,000 | |||||||||
| Scherer (8.4% of Units 1 and 2 and 75% of Unit 3) | Macon, GA | 750,924 | |||||||||
| Total Coal | 3,910,924 | ||||||||||
| Nuclear | |||||||||||
| Hatch (50.1%) | Baxley, GA | 899,612 | |||||||||
| Vogtle Units 1 and 2 (45.7%) | Augusta, GA | 1,060,240 | |||||||||
| Total Nuclear | 1,959,852 | ||||||||||
| Hydro | |||||||||||
| Bartletts Ferry | Columbus, GA | 173,000 | |||||||||
| Burton | Clayton, GA | 8,100 | |||||||||
| Flint River | Albany, GA | 5,400 | |||||||||
| Goat Rock | Columbus, GA | 40,500 | |||||||||
| Lloyd Shoals | Jackson, GA | 18,000 | |||||||||
| Morgan Falls | Atlanta, GA | 16,800 | |||||||||
| Nacoochee | Lakemont, GA | 4,800 | |||||||||
| North Highlands | Columbus, GA | 29,600 | |||||||||
| Oliver Dam | Columbus, GA | 60,000 | |||||||||
| Rocky Mountain (25.4%) | Rome, GA | 229,362 | (c) | ||||||||
| Sinclair Dam | Milledgeville, GA | 45,000 |
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| Company/Facility Type**(a)****/Facility Name/** Ownership Percentage | Location | Nameplate Capacity (KWs) | |||||||||
| Tallulah Falls | Clayton, GA | 72,000 | |||||||||
| Terrora | Clayton, GA | 20,800 | |||||||||
| Tugalo | Clayton, GA | 45,000 | |||||||||
| Wallace Dam | Eatonton, GA | 321,300 | |||||||||
| Yonah | Toccoa, GA | 22,500 | |||||||||
| Total Hydro | 1,112,162 | ||||||||||
| Solar | |||||||||||
| Fort Benning | Columbus, GA | 30,005 | |||||||||
| Fort Gordon | Augusta, GA | 30,000 | |||||||||
| Fort Stewart | Fort Stewart, GA | 30,000 | |||||||||
| Fort Valley | Fort Valley, GA | 10,800 | |||||||||
| Kings Bay | Camden County, GA | 30,161 | |||||||||
| Marine Corps Logistics Base | Albany, GA | 31,161 | |||||||||
| Moody Air Force Base | Valdosta, GA | 49,500 | |||||||||
| Robins Air Force Base | Warner Robins, GA | 128,000 | |||||||||
| 8 Other Plants | Various Georgia locations | 18,479 | |||||||||
| Total Solar | 358,106 | ||||||||||
| Total Georgia Power Generating Capacity | 13,592,964 | ||||||||||
| Mississippi Power | |||||||||||
| Natural Gas | |||||||||||
| Combined Cycle: | |||||||||||
| Daniel | Pascagoula, MS | 1,070,424 | |||||||||
| Ratcliffe | Kemper County, MS | 769,898 | |||||||||
| Combustion Turbine: | |||||||||||
| Sweatt | Meridian, MS | 39,400 | |||||||||
| Watson | Gulfport, MS | 39,360 | |||||||||
| Steam: | |||||||||||
| Greene County Units 1 and 2 (40%) | Demopolis, AL | 200,000 | |||||||||
| Watson | Gulfport, MS | 750,000 | |||||||||
| Total Natural Gas | 2,869,082 | ||||||||||
| Coal | |||||||||||
| Daniel (50%) | Pascagoula, MS | 500,000 | |||||||||
| Cogeneration | |||||||||||
| Chevron Cogenerating Station | Pascagoula, MS | 147,292 | (d) | ||||||||
| Total Mississippi Power Generating Capacity | 3,516,374 | ||||||||||
| Southern Power | |||||||||||
| Natural Gas | |||||||||||
| Combined Cycle: | |||||||||||
| Franklin | Smiths, AL | 1,857,820 | |||||||||
| Harris | Autaugaville, AL | 1,318,920 | |||||||||
| Rowan Unit 4 | Salisbury, NC | 530,550 | |||||||||
| Wansley Units 6 and 7 | Carrollton, GA | 1,073,000 |
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| Company/Facility Type**(a)****/Facility Name/** Ownership Percentage | Location | Nameplate Capacity (KWs) | |||||||||
| Combustion Turbine: | |||||||||||
| Addison | Thomaston, GA | 668,800 | |||||||||
| Cleveland | Cleveland County, NC | 720,000 | |||||||||
| Dahlberg | Jackson County, GA | 756,000 | |||||||||
| Rowan Units 1 through 3 | Salisbury, NC | 455,250 | |||||||||
| Total Natural Gas | 7,380,340 | ||||||||||
| Wind | |||||||||||
| Beech Ridge II | Greenbrier County, WV | 56,200 | |||||||||
| Bethel | Castro County, TX | 276,000 | |||||||||
| Cactus Flats | Concho County, TX | 148,350 | |||||||||
| Deuel Harvest | Deuel County, SD | 301,100 | |||||||||
| Glass Sands | Murray County, OK | 118,300 | |||||||||
| Grant Plains | Grant County, OK | 147,200 | |||||||||
| Grant Wind | Grant County, OK | 151,800 | |||||||||
| Kay Wind | Kay County, OK | 299,000 | |||||||||
| Passadumkeag | Penobscot County, ME | 42,900 | |||||||||
| Reading | Osage & Lyon Counties, KS | 200,100 | |||||||||
| Salt Fork | Donley & Gray Counties, TX | 174,000 | |||||||||
| Skookumchuck | Lewis & Thurston Counties, WA | 136,800 | |||||||||
| Tyler Bluff | Cooke County, TX | 125,580 | |||||||||
| Wake Wind | Crosby & Floyd Counties, TX | 257,250 | |||||||||
| Wildhorse Mountain | Pushmataha County, OK | 100,000 | |||||||||
| Total Wind | 2,534,580 | (e) | |||||||||
| Solar | |||||||||||
| Adobe | Kern County, CA | 20,000 | |||||||||
| Apex | North Las Vegas, NV | 20,000 | |||||||||
| Boulder I | Clark County, NV | 100,000 | |||||||||
| Butler | Taylor County, GA | 104,000 | |||||||||
| Butler Solar Farm | Taylor County, GA | 22,000 | |||||||||
| Calipatria | Imperial County, CA | 20,000 | |||||||||
| Campo Verde | Imperial County, CA | 147,420 | |||||||||
| Cimarron | Colfax County, NM | 30,640 | |||||||||
| Decatur County | Decatur County, GA | 20,000 | |||||||||
| Decatur Parkway | Decatur County, GA | 84,000 | |||||||||
| Desert Stateline | San Bernadino County, CA | 299,990 | |||||||||
| East Pecos | Pecos County, TX | 120,000 | |||||||||
| Garland | Kern County, CA | 205,290 | |||||||||
| Gaskell West I | Kern County, CA | 20,000 | |||||||||
| Granville | Granville County, NC | 2,500 | |||||||||
| Henrietta | Kings County, CA | 102,000 | |||||||||
| Imperial Valley | Imperial County, CA | 163,200 | |||||||||
| Lamesa | Dawson County, TX | 102,000 | |||||||||
| Lost Hills-Blackwell | Kern County, CA | 32,000 | |||||||||
| Macho Springs | Luna County, NM | 55,000 | |||||||||
| Morelos del Sol | Kern County, CA | 15,000 | |||||||||
| North Star | Fresno County, CA | 61,600 | |||||||||
| Pawpaw | Taylor County, GA | 30,480 | |||||||||
| Roserock | Pecos County, TX | 160,000 | |||||||||
| Rutherford | Rutherford County, NC | 74,800 | |||||||||
| Sandhills | Taylor County, GA | 148,000 |
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| Company/Facility Type**(a)****/Facility Name/** Ownership Percentage | Location | Nameplate Capacity (KWs) | |||||||||
| Spectrum | Clark County, NV | 30,240 | |||||||||
| Tranquillity | Fresno County, CA | 205,300 | |||||||||
| Total Solar | 2,395,460 | (f) | |||||||||
| Battery Storage | |||||||||||
| Garland | Kern County, CA | 88,000 | (g) | ||||||||
| Millikan | Orange County, CA | 2,000 | (h) | ||||||||
| Tranquillity | Fresno County, CA | 72,000 | (g) | ||||||||
| Wildcat | Palm Springs, CA | 1,500 | (h) | ||||||||
| Total Battery Storage | 163,500 | ||||||||||
| Fuel Cell | |||||||||||
| Red Lion and Brookside | New Castle and Newark, DE | 27,500 | (i) | ||||||||
| Total Southern Power Generating Capacity | 12,501,380 | ||||||||||
| SEGCO | |||||||||||
| Gaston Units 1 through 4 (Natural Gas-Steam) | Wilsonville, AL | 1,000,000 | |||||||||
| Gaston (Natural Gas-Combustion Turbine) | Wilsonville, AL | 19,680 | |||||||||
| Total SEGCO Generating Capacity | 1,019,680 | (j) | |||||||||
| Southern Company System | |||||||||||
| Natural Gas | 21,844,446 | ||||||||||
| Coal | 8,523,212 | ||||||||||
| Nuclear | 3,679,852 | ||||||||||
| Hydro | 2,780,241 | ||||||||||
| Solar | 2,771,506 | ||||||||||
| Wind | 2,534,580 | ||||||||||
| Cogeneration | 611,938 | ||||||||||
| Battery Storage | 163,500 | ||||||||||
| Fuel Cell | 27,500 | ||||||||||
| Total Southern Company System Generating Capacity | 42,936,775 | ||||||||||
(a)Represents the primary fuel source.
(b)Plant Gadsden, a 120-MW natural gas steam plant, was retired on December 31, 2022.
(c)Operated by OPC.
(d)Generation is dedicated to a single industrial customer. See MANAGEMENT'S DISCUSSION AND ANALYSIS – FINANCIAL CONDITION AND LIQUIDITY – "Credit Rating Risk" in Item 7 herein.
(e)Southern Power owns 100% of Glass Sands and is also the controlling partner in a non-tax equity partnership for Beech Ridge II. Southern Power is the controlling partner in tax equity partnerships owning Cactus Flats, Wildhorse Mountain, Reading, Skookumchuck, and Deuel Harvest (additionally for Skookumchuck and Deuel Harvest, a noncontrolling interest in Southern Power's remaining equity is owned by another partner). Southern Power is the controlling partner in SP Wind (a tax equity partnership owning the remaining eight Southern Power wind facilities). SP Wind is the 90.1% majority owner of Wake Wind and owns 100% of the other SP Wind facilities. All of these entities are consolidated subsidiaries of Southern Power and the capacity shown in the table is 100% of the nameplate capacity for the respective facility.
(f)Southern Power owns a 67% equity interest in SP Solar (a limited partnership indirectly owning all of Southern Power's solar facilities, except the Roserock and Gaskell West I solar facilities). SP Solar is the 51% majority owner of Boulder I, Garland, Henrietta, Imperial Valley, Lost Hills Blackwell, North Star, and Tranquillity solar facilities; the 66% majority owner of Desert Stateline solar facility; and the sole owner of the remaining SP Solar solar facilities. Southern Power owns 100% of Roserock and is also the controlling partner in a tax equity partnership owning Gaskell West I. All of these entities are consolidated subsidiaries of Southern Power and the capacity shown in the table is 100% of the nameplate capacity for the respective facility.
(g)Southern Power is the controlling partner in a tax equity partnership owning the Garland and Tranquillity battery energy storage facilities. Additionally, the noncontrolling interests in Southern Power's remaining equity are owned by two other partners and the facilities are indirect subsidiaries of SP Solar. These entities are consolidated subsidiaries of Southern Power and the capacity shown in the table is 100% of the nameplate capacity for the respective facility.
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(h)Subsequent to December 31, 2022, Southern Power, as the Class A member, sold its equity method investment in the facility.
(i)Southern Power has two noncontrolling interest partners that own approximately 10 MWs of the facility. These entities are consolidated subsidiaries of Southern Power and the capacity shown in the table is 100% of the nameplate capacity for the respective facility.
(j)Alabama Power and Georgia Power each own 50% of the outstanding common stock of SEGCO, an operating public utility company. Alabama Power and Georgia Power are each entitled to one-half of SEGCO's capacity and energy. Alabama Power acts as SEGCO's agent in the operation of SEGCO's units and furnishes fuel to SEGCO for its units. See Note 7 to the financial statements under "SEGCO" in Item 8 herein for additional information.
See MANAGEMENT'S DISCUSSION AND ANALYSIS – FUTURE EARNINGS POTENTIAL – "Environmental Matters" in Item 7 herein and Note 2 to the financial statements under "Alabama Power – Environmental Accounting Order," "Georgia Power – Integrated Resource Plans," and "Mississippi Power – Integrated Resource Plan" in Item 8 herein for information regarding plans to retire or convert to natural gas certain coal-fired generating capacity included in the table above.
Except as discussed below under "Titles to Property," the principal plants and other important units of the traditional electric operating companies, Southern Power, and SEGCO are owned in fee by the respective companies. It is the opinion of management of each such company that its operating properties are adequately maintained and are substantially in good operating condition, and suitable for their intended purpose.
Mississippi Power owns a 79-mile length of 500-kilovolt transmission line which is leased to Entergy Gulf States Louisiana, LLC. The line extends from Plant Daniel to the Louisiana state line. Entergy Gulf States Louisiana, LLC is paying a use fee through 2024 covering all expenses and the amortization of the original cost. At December 31, 2022, the unamortized portion was approximately $1 million.
Mississippi Power owns a lignite mine that was intended to provide fuel for the Kemper IGCC. Liberty Fuels Company, LLC, the operator of the mine, has a legal obligation to perform mine reclamation and Mississippi Power has a contractual obligation to fund all reclamation activities. As a result of the abandonment of the Kemper IGCC, final mine reclamation began in 2018 and was substantially completed in 2020, with monitoring expected to continue through 2028. See Note 3 to the financial statements under "Other Matters – Mississippi Power – Kemper County Energy Facility" in Item 8 herein for additional information.
In conjunction with Southern Company's 2019 sale of Gulf Power, Mississippi Power and NextEra Energy agreed to negotiate a mutually acceptable revised operating agreement for Plant Daniel. On July 12, 2022, the co-owners executed a revised operating agreement. The dispatch procedures in the revised operating agreement for the two jointly-owned coal units at Plant Daniel resulted in Mississippi Power designating one of the two units as primary and the other as secondary in lieu of each company separately owning 100% of a single generating unit. Mississippi Power has the option to purchase its co-owner's ownership interest for $1 on January 15, 2024, provided that Mississippi Power exercises the option no later than 120 days prior to that date. See Notes 2 and 3 under "Mississippi Power – Integrated Resource Plan" and "Other Matters – Mississippi Power – Plant Daniel," respectively, in Item 8 herein for additional information on Plant Daniel.
In 2022, the maximum demand on the traditional electric operating companies, Southern Power Company, and SEGCO was 37,035,000 KWs and occurred on June 15, 2022, which was also the maximum all-time demand. This amount excludes demand served by capacity retained by MEAG Power, OPC, and SEPA. The reserve margin for the traditional electric operating companies, Southern Power Company, and SEGCO in 2022 was 20%.
Jointly-Owned Facilities
Alabama Power, Georgia Power, and Mississippi Power at December 31, 2022 had undivided interests in certain generating plants and other related facilities with non-affiliated parties. The percentages of ownership of the total plant or facility are as follows:
| Percentage Ownership | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Total Capacity | Alabama Power | Power South | Georgia Power | Mississippi Power | OPC | MEAG Power | Dalton | FP&L | ||||||||||||||||||||||||||||||||||||||||||||||||
| (MWs) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Plant Miller Units 1 and 2 | 1,320 | 91.8 | % | 8.2 | % | — | % | — | % | — | % | — | % | — | % | — | % | |||||||||||||||||||||||||||||||||||||||
| Plant Hatch | 1,796 | — | — | 50.1 | — | 30.0 | 17.7 | 2.2 | — | |||||||||||||||||||||||||||||||||||||||||||||||
| Plant Vogtle Units 1 and 2 | 2,320 | — | — | 45.7 | — | 30.0 | 22.7 | 1.6 | — | |||||||||||||||||||||||||||||||||||||||||||||||
| Plant Scherer Units 1 and 2 | 1,636 | — | — | 8.4 | — | 60.0 | 30.2 | 1.4 | — | |||||||||||||||||||||||||||||||||||||||||||||||
| Plant Scherer Unit 3 | 818 | — | — | 75.0 | — | — | — | — | 25.0 | |||||||||||||||||||||||||||||||||||||||||||||||
| Rocky Mountain | 903 | — | — | 25.4 | — | 74.6 | — | — | — | |||||||||||||||||||||||||||||||||||||||||||||||
| Plant Daniel Units 1 and 2 | 1,000 | — | — | — | 50.0 | — | — | — | 50.0 |
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Alabama Power, Georgia Power, and Mississippi Power have contracted to operate and maintain the respective units in which each has an interest (other than Rocky Mountain) as agent for the joint owners. Southern Nuclear operates and provides services to Alabama Power's and Georgia Power's nuclear plants.
In addition, Georgia Power has commitments, in the form of capacity purchases totaling $41 million, regarding a portion of a 5% interest in the original cost of Plant Vogtle Units 1 and 2 owned by MEAG Power that are in effect until the later of the retirement of the plant or the latest stated maturity date of MEAG Power's bonds issued to finance such ownership interest. See Note 3 to the financial statements under "Commitments" in Item 8 herein for additional information.
Construction continues on Plant Vogtle Units 3 and 4, which are jointly owned by the Vogtle Owners (with each owner currently holding the same undivided ownership interest as shown in the table above with respect to Plant Vogtle Units 1 and 2). See Note 2 to the financial statements under "Georgia Power – Nuclear Construction" in Item 8 herein.
Titles to Property
The traditional electric operating companies', Southern Power's, and SEGCO's interests in the principal plants and other important units of the respective companies are owned in fee by such companies, subject to the following major encumbrances: (1) a leasehold interest granted by Mississippi Power's largest retail customer, Chevron Products Company (Chevron), at the Chevron refinery, where five combustion turbines owned by Mississippi Power are located and used for co-generation, as well as liens on these assets pursuant to the related co-generation agreements and (2) liens associated with Georgia Power's reimbursement obligations to the DOE under its loan guarantee, which are secured by a first priority lien on (a) Georgia Power's undivided ownership interest in Plant Vogtle Units 3 and 4 and (b) Georgia Power's rights and obligations under the principal contracts relating to Plant Vogtle Units 3 and 4. See Note 5 to the financial statements under "Assets Subject to Lien" and Note 8 to the financial statements under "Long-term Debt" in Item 8 herein for additional information. The traditional electric operating companies own the fee interests in certain of their principal plants as tenants in common. See "Jointly-Owned Facilities" herein and Note 5 to the financial statements under "Joint Ownership Agreements" in Item 8 herein for additional information. Properties such as electric transmission and distribution lines, steam heating mains, and gas pipelines are constructed principally on rights-of-way, which are maintained under franchise or are held by easement only. A substantial portion of lands submerged by reservoirs is held under flood right easements. In addition, certain of the renewable generating facilities occupy or use real property that is not owned, primarily through various leases, easements, rights-of-way, permits, or licenses from private landowners or governmental entities.
Natural Gas
Southern Company Gas considers its properties to be adequately maintained, substantially in good operating condition, and suitable for their intended purpose. The following sections provide the location and general character of the materially important properties that are used by the segments of Southern Company Gas. Substantially all of Nicor Gas' properties are subject to the lien of the indenture securing its first mortgage bonds. See Note 8 to the financial statements in Item 8 herein for additional information.
Distribution and Transmission Mains
Southern Company Gas' distribution systems transport natural gas from its pipeline suppliers to customers in its service areas. These systems consist primarily of distribution and transmission mains, compressor stations, peak shaving/storage plants, service lines, meters, and regulators. At December 31, 2022, Southern Company Gas' gas distribution operations segment owned 77,591 miles of underground distribution and transmission mains, which are located on easements or rights-of-way that generally provide for perpetual use.
Storage Assets
Gas Distribution Operations
Southern Company Gas owns and operates eight underground natural gas storage fields in Illinois with a total working capacity of approximately 150 Bcf, approximately 135 Bcf of which is usually cycled on an annual basis. This system is designed to meet about 50% of the estimated peak-day deliveries and approximately 40% of the normal winter deliveries in Illinois. This level of storage capability provides Nicor Gas with supply flexibility, improves the reliability of deliveries, and helps mitigate the risk associated with seasonal price movements.
Southern Company Gas also has four LNG plants located in Georgia and Tennessee with total LNG storage capacity of approximately 7.0 Bcf. In addition, Southern Company Gas owns two propane storage facilities in Virginia, each with storage capacity of approximately 0.3 Bcf. The LNG plants and propane storage facility are used by Southern Company Gas' gas distribution operations segment to supplement natural gas supply during peak usage periods.
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All Other
On September 7, 2022, certain affiliates of Southern Company Gas entered into agreements to sell two natural gas storage facilities located in California and Texas. The sale of the Texas facility was completed on November 18, 2022 and completion of the sale of the California facility is expected later in 2023. The ultimate outcome of this matter cannot be determined at this time. See Note 15 to the financial statements under "Southern Company Gas" in Item 8 herein for additional information.
Jointly-Owned Properties
Southern Company Gas' gas pipeline investments segment has a 50% undivided ownership interest in a 115-mile pipeline facility in northwest Georgia that was placed in service in 2017. Southern Company Gas also has an agreement to lease its 50% undivided ownership in the pipeline facility. See Note 5 to the financial statements under "Joint Ownership Agreements" in Item 8 herein for additional information.
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