2020 RRS Annual Assessment

16

Highlights • Gas has continued to overtake Coal as the largest source of electric energy, supplying approximately 31 percent of the capacity in the subregion in 2020. • The solar development project interconnection queue continues to increase significantly across the subregion.

Projected Demands, Resources, and Reserve Margins (Summer)

Demand (MW)

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

Total Internal

43,702

43,624

43,976

44,258

44,544

44,793

45,141

45,458

45,817

46,256

Demand Response

947

955

964

973

976

976

977

978

979

980

Net Internal

42,755

42,669

43,012

43,285

43,568

43,817

44,164

44,480

44,838

45,276

Resources (MW)

Anticipated Prospective

51,822 51,864 21.21% 21.30%

52,459 52,501 22.94% 23.04%

53,042 53,084 23.32% 23.42%

53,141 53,183 22.77% 22.87%

53,177 53,219 22.05% 22.15%

54,819 54,861 25.11% 25.20%

55,281 55,323 25.17% 25.27%

56,366 56,408 26.72% 26.82%

56,935 56,977 26.98% 27.07%

58,645 58,687 29.53% 29.62%

Reserve Margins (%) Anticipated

SERC East The SERC East subregion is a winter peaking system, which consists of the following Planning Coordinators: Cube Hydro Carolinas, Duke Energy Carolinas, Duke Energy Progress, Dominion Energy South Carolina, and South Carolina Public Service Authority.

Prospective

Existing On-Peak Generation (Summer)

Peak Capacity MW %

Generation Type

Biomass

B 164

0.3%

Coal

C 15,416 16,307

29.9% 31.6%

Natural Gas

Hydro

H 3,032

5.9%

Nuclear

N 11,744

22.8%

Other

O 0

0.0% 2.4% 6.0% 1.1% 0.0%

Petroleum

P 1,237 P 3,109

Pumped Storage

Solar Wind

S 546

W 0

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