2020 RRS Annual Assessment

20

Highlights • Anticipated resources are considerably lower than past assessments and are decreasing through the ten-year planning horizon. • Approximately 950 miles of new transmission lines will be constructed through the 10-year planning horizon. These transmission conditions will provide additional capacity and enhance local area voltage support.

Projected Demands, Resources, and Reserve Margins (Summer)

Demand (MW)

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

Total Internal

18,792

18,750

19,001

18,994

19,029

19,038

19,056

19,089

19,131

19,075

Demand Response

1,026

1,022

1,022

1,022

1,022

1,022

1,022

1,022

1,022

1,022

Net Internal

17,766

17,728

17,979

17,972

18,007

18,016

18,034

18,067

18,109

18,053

Resources (MW)

Anticipated Prospective

19,454 20,689

19,897 20,689

19,897 20,689

19,201 19,993

19,201 19,993

19,201 19,993

19,201 19,993

19,201 19,993

19,201 19,993

19,822 19,993

SERC MISO-Central The SERC MISO-Central subregion is a summer peaking system that consists of the following Planning Coordinators: Midcontinent Independent System Operator, Inc.

Reserve Margins (%) Anticipated

9.50%

12.23% 16.70%

10.67% 15.07%

6.84%

6.63%

6.58%

6.47%

6.28%

6.03%

9.80%

Prospective

16.45%

11.25%

11.03%

10.97%

10.86%

10.66%

10.40%

10.75%

Existing On-Peak Generation (Summer) Generation Type Peak Capacity MW % Biomass 3 0.02 Coal 11,11 55.81 Gas 5,307 26.64 Hydro 363 1.82 Nuclear 2,255 11.32 Other 0 0.00 Petroleum 266 1.33 Pumped Storage 440 2.21 Solar 0 0.00 Wind 169 0.85

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