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Region Study
End Year		 Submission FK Company Study Area Docket No MSS-Imported
Capacity
Winter		 MSS-Imported
Capacity
Spring		 MSS-Imported
Capacity
Summer		 MSS-Imported
Capacity
Fall		 MSS-Market Share
Results (%) - Winter		 MSS-Market Share
Results (%) - Spring		 MSS-Market Share
Results (%) - Summer		 MSS-Market Share
Results (%) - Fall		 Long-Term
Purchases Inside
BAA ≤ Long-Term Sales		 MSS Pass or Fail w/o
Competing Imports		 PSS- Seller
Installed Capacity		 PSS-Total
Installed Capacity		 PSS-Total
Capacity		 PSS-Total
Capacity
Serving Market		 PSS-Long-Term
Purchases inside
BAA ≤ Long-Term Sales		 PSS-BAA Reserve
Requirement		 PSS-Total
Uncommitted Capacity		 PSS-Average
Daily Peak
Native Load		 PSS-Wholesale
Load		 PSS-Net
Uncommitted Supply		 PSS-Seller
Uncommitted Supply		 PSS Result PSS Pass or Fail
w/o Competing
Imports
Southeast 2023 1593464 Alabama Power Company SC ER96-780-000 1,415.00 0.00 1,209.00 1,577.00 18.26 0.00 16.60 16.51 Yes Pass 0.00 5,309.00 5,640.00 5,936.00 Yes 296.00 2,090.00 3,655.00 1,687.00 1,890.00 401.00 Pass Pass
Southeast 2023 1593464 Alabama Power Company SOCO ER96-780-000 3,159.00 5,742.00 4,580.00 2,896.00 56.73 52.31 43.26 60.48 No Fail 40,242.00 60,271.00 60,271.00 89,287.00 No 3,212.00 19,158.00 42,721.00 4,306.00 15,866.00 7,991.00 Pass Pass
Southeast 2023 1593464 Alabama Power Company TAL ER96-780-000 210.00 242.00 207.00 298.00 14.14 17.31 18.00 22.55 Yes Pass 0.00 791.00 791.00 858.00 Yes 67.00 239.00 556.00 60.00 334.00 71.00 Pass Pass
Southeast 2023 1593464 Alabama Power Company TVA ER96-780-000 5,566.00 533.00 1,060.00 6,965.00 2.29 0.36 0.65 3.14 Yes Pass 0.00 36,013.00 36,013.00 37,722.00 Yes 1,709.00 12,506.00 21,854.00 11,573.00 4,035.00 56.00 Pass Pass
Southwest 2020 1593483 Tri-State Generation and Transmission As PNM ER20-681-000 413.00 359.00 111.00 550.00 14.37 16.40 19.26 16.44 No Pass 575.00 3,495.00 4,069.00 5,240.50 No 127.00 2,123.50 2,119.00 261.00 1,772.00 390.50 Pass Pass
Northwest 2020 1593483 Tri-State Generation and Transmission As PSCO ER20-681-000 1,925.00 2,000.00 2,201.00 1,678.00 9.49 9.06 10.38 9.30 No Pass 406.00 13,098.00 14,578.00 15,599.00 No 447.00 7,407.00 7,447.00 952.00 7,793.00 929.00 Pass Pass
Northwest 2020 1593483 Tri-State Generation and Transmission As WACM ER20-681-000 0.00 0.00 0.00 0.00 17.66 20.67 19.60 21.55 No Pass 1,207.00 8,466.00 8,631.00 12,099.00 No 242.00 5,273.00 4,039.00 475.00 3,585.00 773.00 Pass Pass
Southeast 2023 1593514 Southern Power Company DESC ER00-1655-000 522.00 1,585.00 1,946.00 1,898.00 4.80 15.89 15.59 16.46 Yes Pass 0.00 6,773.00 6,773.00 7,093.00 Yes 320.00 2,757.00 4,203.00 581.00 3,637.00 507.00 Pass Pass
Southeast 2023 1593514 Southern Power Company DUK ER00-1655-000 3,147.00 857.00 2,794.00 3,989.00 6.01 3.46 4.29 6.12 Yes Pass 1,787.00 24,229.00 24,229.00 27,756.00 Yes 1,059.00 4,171.00 18,550.00 2,585.00 5,884.00 348.00 Pass Pass
Southeast 2023 1593514 Southern Power Company FPC ER00-1655-000 65.00 0.00 1,553.00 1,057.00 0.24 0.00 6.29 4.45 Yes Pass 0.00 12,323.00 12,329.00 12,852.00 Yes 523.00 2,262.00 9,929.00 1,357.00 5,260.00 385.00 Pass Pass
Southeast 2023 1593514 Southern Power Company FPL ER00-1655-000 0.00 984.00 1,401.00 309.00 0.00 3.15 3.95 0.91 Yes Pass 0.00 34,859.00 35,074.00 36,350.00 Yes 1,276.00 8,065.00 26,138.00 2,627.00 8,290.00 405.00 Pass Pass
Southeast 2023 1593514 Southern Power Company JEA ER00-1655-000 1,009.00 1,038.00 964.00 1,119.00 15.38 19.59 16.94 19.88 Yes Fail 0.00 2,988.00 3,294.00 3,483.00 Yes 189.00 844.00 2,527.00 289.00 1,515.00 266.00 Pass Pass
Southeast 2023 1593514 Southern Power Company SC ER00-1655-000 1,415.00 0.00 1,209.00 1,577.00 18.26 0.00 16.60 16.51 Yes Pass 0.00 5,309.00 5,640.00 5,936.00 Yes 296.00 2,090.00 3,655.00 1,687.00 1,890.00 401.00 Pass Pass
Southeast 2023 1593514 Southern Power Company SOCO ER00-1655-000 3,159.00 5,742.00 4,580.00 2,896.00 56.73 52.31 43.26 60.48 No Fail 40,242.00 60,271.00 60,271.00 89,287.00 No 3,212.00 19,158.00 42,721.00 4,306.00 15,866.00 7,991.00 Pass Pass
Southeast 2023 1593514 Southern Power Company TAL ER00-1655-000 210.00 242.00 207.00 298.00 14.14 17.31 18.00 22.55 Yes Pass 0.00 791.00 791.00 858.00 Yes 67.00 239.00 556.00 60.00 334.00 71.00 Pass Pass
Southeast 2023 1593514 Southern Power Company TVA ER00-1655-000 5,566.00 533.00 1,060.00 6,965.00 2.29 0.36 0.65 3.14 Yes Pass 0.00 36,013.00 36,013.00 37,722.00 Yes 1,709.00 12,506.00 21,854.00 11,573.00 4,035.00 56.00 Pass Pass
Southwest 2020 1593530 Sonoran West Solar Holdings, LLC CISO 0.00 0.00 0.00 0.00 15.12 14.97 18.40 15.56 Yes Pass 9,033.00 65,435.00 65,435.00 72,000.00 Yes 2,161.00 19,308.00 39,562.00 7,408.00 16,304.00 4,629.00 Pass Pass
Southwest 2020 1593533 Sonoran West Solar Holdings 2, LLC CISO 0.00 0.00 0.00 0.00 15.12 14.97 18.40 15.56 Yes Pass 9,033.00 65,435.00 65,435.00 72,000.00 Yes 2,161.00 19,308.00 39,562.00 7,408.00 16,304.00 4,629.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company DESC ER96-780-000 522.00 1,585.00 1,946.00 1,898.00 4.80 15.89 15.59 16.46 Yes Pass 0.00 6,773.00 6,773.00 7,093.00 Yes 320.00 2,757.00 4,203.00 581.00 3,637.00 507.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company DUK ER96-780-000 3,147.00 857.00 2,794.00 3,989.00 6.01 3.46 4.29 6.12 Yes Pass 1,787.00 24,229.00 24,229.00 27,756.00 Yes 1,059.00 4,171.00 18,550.00 2,585.00 5,884.00 348.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company FPC ER96-780-000 65.00 0.00 1,553.00 1,057.00 0.24 0.00 6.29 4.45 Yes Pass 0.00 12,323.00 12,329.00 12,852.00 Yes 523.00 2,262.00 9,929.00 1,357.00 5,260.00 385.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company FPL ER96-780-000 0.00 984.00 1,401.00 309.00 0.00 3.15 3.95 0.91 Yes Pass 0.00 34,859.00 35,074.00 36,350.00 Yes 1,276.00 8,065.00 26,138.00 2,627.00 8,290.00 405.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company JEA ER96-780-000 1,009.00 1,038.00 964.00 1,119.00 15.38 19.59 16.94 19.88 Yes Fail 0.00 2,988.00 3,294.00 3,483.00 Yes 189.00 844.00 2,527.00 289.00 1,515.00 266.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company SC ER96-780-000 1,415.00 0.00 1,209.00 1,577.00 18.26 0.00 16.60 16.51 Yes Pass 0.00 5,309.00 5,640.00 5,936.00 Yes 296.00 2,090.00 3,655.00 1,687.00 1,890.00 401.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company SOCO ER96-780-000 3,159.00 5,742.00 4,580.00 2,896.00 56.73 52.31 43.26 60.48 No Fail 40,242.00 60,271.00 60,271.00 89,287.00 No 3,212.00 19,158.00 42,721.00 4,306.00 15,866.00 7,991.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company TAL ER96-780-000 210.00 242.00 207.00 298.00 14.14 17.31 18.00 22.55 Yes Pass 0.00 791.00 791.00 858.00 Yes 67.00 239.00 556.00 60.00 334.00 71.00 Pass Pass
Southeast 2023 1593542 Mississippi Power Company TVA ER96-780-000 5,566.00 533.00 1,060.00 6,965.00 2.29 0.36 0.65 3.14 Yes Pass 0.00 36,013.00 36,013.00 37,722.00 Yes 1,709.00 12,506.00 21,854.00 11,573.00 4,035.00 56.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC DESC ER16-2509-000 522.00 1,585.00 1,946.00 1,898.00 4.80 15.89 15.59 16.46 Yes Pass 0.00 6,773.00 6,773.00 7,093.00 Yes 320.00 2,757.00 4,203.00 581.00 3,637.00 507.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC DUK ER16-2509-000 3,147.00 857.00 2,794.00 3,989.00 6.01 3.46 4.29 6.12 Yes Pass 1,787.00 24,229.00 24,229.00 27,756.00 Yes 1,059.00 4,171.00 18,550.00 2,585.00 5,884.00 348.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC FPC ER16-2509-000 65.00 0.00 1,553.00 1,057.00 0.24 0.00 6.29 4.45 Yes Pass 0.00 12,323.00 12,329.00 12,852.00 Yes 523.00 2,262.00 9,929.00 1,357.00 5,260.00 385.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC FPL ER16-2509-000 0.00 984.00 1,401.00 309.00 0.00 3.15 3.95 0.91 Yes Pass 0.00 34,859.00 35,074.00 36,350.00 Yes 1,276.00 8,065.00 26,138.00 2,627.00 8,290.00 405.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC JEA ER16-2509-000 1,009.00 1,038.00 964.00 1,119.00 15.38 19.59 16.94 19.88 Yes Fail 0.00 2,988.00 3,294.00 3,483.00 Yes 189.00 844.00 2,527.00 289.00 1,515.00 266.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC SC ER16-2509-000 1,415.00 0.00 1,209.00 1,577.00 18.26 0.00 16.60 16.51 Yes Pass 0.00 5,309.00 5,640.00 5,936.00 Yes 296.00 2,090.00 3,655.00 1,687.00 1,890.00 401.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC SOCO ER16-2509-000 3,159.00 5,742.00 4,580.00 2,896.00 56.73 52.31 43.26 60.48 No Fail 40,242.00 60,271.00 60,271.00 89,287.00 No 3,212.00 19,158.00 42,721.00 4,306.00 15,866.00 7,991.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC TAL ER16-2509-000 210.00 242.00 207.00 298.00 14.14 17.31 18.00 22.55 Yes Pass 0.00 791.00 791.00 858.00 Yes 67.00 239.00 556.00 60.00 334.00 71.00 Pass Pass
Southeast 2023 1593733 Rutherford Farm, LLC TVA ER16-2509-000 5,566.00 533.00 1,060.00 6,965.00 2.29 0.36 0.65 3.14 Yes Pass 0.00 36,013.00 36,013.00 37,722.00 Yes 1,709.00 12,506.00 21,854.00 11,573.00 4,035.00 56.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC DESC ER17-2400-000 522.00 1,585.00 1,946.00 1,898.00 4.80 15.89 15.59 16.46 Yes Pass 0.00 6,773.00 6,773.00 7,093.00 Yes 320.00 2,757.00 4,203.00 581.00 3,637.00 507.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC DUK ER17-2400-000 3,147.00 857.00 2,794.00 3,989.00 6.01 3.46 4.29 6.12 Yes Pass 1,787.00 24,229.00 24,229.00 27,756.00 Yes 1,059.00 4,171.00 18,550.00 2,585.00 5,884.00 348.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC FPC ER17-2400-000 65.00 0.00 1,553.00 1,057.00 0.24 0.00 6.29 4.45 Yes Pass 0.00 12,323.00 12,329.00 12,852.00 Yes 523.00 2,262.00 9,929.00 1,357.00 5,260.00 385.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC FPL ER17-2400-000 0.00 984.00 1,401.00 309.00 0.00 3.15 3.95 0.91 Yes Pass 0.00 34,859.00 35,074.00 36,350.00 Yes 1,276.00 8,065.00 26,138.00 2,627.00 8,290.00 405.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC JEA ER17-2400-000 1,009.00 1,038.00 964.00 1,119.00 15.38 19.59 16.94 19.88 Yes Fail 0.00 2,988.00 3,294.00 3,483.00 Yes 189.00 844.00 2,527.00 289.00 1,515.00 266.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC SC ER17-2400-000 1,415.00 0.00 1,209.00 1,577.00 18.26 0.00 16.60 16.51 Yes Pass 0.00 5,309.00 5,640.00 5,936.00 Yes 296.00 2,090.00 3,655.00 1,687.00 1,890.00 401.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC SOCO ER17-2400-000 3,159.00 5,742.00 4,580.00 2,896.00 56.73 52.31 43.26 60.48 No Fail 40,242.00 60,271.00 60,271.00 89,287.00 No 3,212.00 19,158.00 42,721.00 4,306.00 15,866.00 7,991.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC TAL ER17-2400-000 210.00 242.00 207.00 298.00 14.14 17.31 18.00 22.55 Yes Pass 0.00 791.00 791.00 858.00 Yes 67.00 239.00 556.00 60.00 334.00 71.00 Pass Pass
Southeast 2023 1593751 SP Butler Solar, LLC TVA ER17-2400-000 5,566.00 533.00 1,060.00 6,965.00 2.29 0.36 0.65 3.14 Yes Pass 0.00 36,013.00 36,013.00 37,722.00 Yes 1,709.00 12,506.00 21,854.00 11,573.00 4,035.00 56.00 Pass Pass
Southeast 2023 1593765 SP Sandhills Solar, LLC DESC ER17-2404-000 522.00 1,585.00 1,946.00 1,898.00 4.80 15.89 15.59 16.46 Yes Pass 0.00 6,773.00 6,773.00 7,093.00 Yes 320.00 2,757.00 4,203.00 581.00 3,637.00 507.00 Pass Pass
Southeast 2023 1593765 SP Sandhills Solar, LLC DUK ER17-2404-000 3,147.00 857.00 2,794.00 3,989.00 6.01 3.46 4.29 6.12 Yes Pass 1,787.00 24,229.00 24,229.00 27,756.00 Yes 1,059.00 4,171.00 18,550.00 2,585.00 5,884.00 348.00 Pass Pass
Southeast 2023 1593765 SP Sandhills Solar, LLC FPC ER17-2404-000 65.00 0.00 1,553.00 1,057.00 0.24 0.00 6.29 4.45 Yes Pass 0.00 12,323.00 12,329.00 12,852.00 Yes 523.00 2,262.00 9,929.00 1,357.00 5,260.00 385.00 Pass Pass
Southeast 2023 1593765 SP Sandhills Solar, LLC FPL ER17-2404-000 0.00 984.00 1,401.00 309.00 0.00 3.15 3.95 0.91 Yes Pass 0.00 34,859.00 35,074.00 36,350.00 Yes 1,276.00 8,065.00 26,138.00 2,627.00 8,290.00 405.00 Pass Pass
Southeast 2023 1593765 SP Sandhills Solar, LLC JEA ER17-2404-000 1,009.00 1,038.00 964.00 1,119.00 15.38 19.59 16.94 19.88 Yes Fail 0.00 2,988.00 3,294.00 3,483.00 Yes 189.00 844.00 2,527.00 289.00 1,515.00 266.00 Pass Pass

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