Hydroelectric Power Plants in the US

1,452 plants · 105.1 GW total capacity · across 49 states

There are 1,452 hydroelectric power plants across 49 US states with 105.1 GW total capacity. California leads with 247 plants.

Largest is Grand Coulee (6809 MW Hydro); oldest active is Whiting (1891); newest is Waterman Turnout Hydroelectric (2024); top state is California (247 plants); top owner is Erie Boulevard Hydropower (71 plants).

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By State

247 plants · 15.3 GW

165 plants · 5.9 GW

76 plants · 2.7 GW

75 plants · 21.7 GW

63 plants · 8.4 GW

61 plants · 522 MW

50 plants · 2.3 GW

49 plants · 1.2 GW

48 plants · 700 MW

45 plants · 320 MW

38 plants · 2 GW

32 plants · 4.4 GW

32 plants · 530 MW

31 plants · 2.1 GW

31 plants · 509 MW

30 plants · 1.3 GW

30 plants · 3.6 GW

29 plants · 4.2 GW

28 plants · 2.5 GW

24 plants · 3.9 GW

23 plants · 3.3 GW

23 plants · 2.7 GW

23 plants · 735 MW

23 plants · 216 MW

19 plants · 1.4 GW

16 plants · 303 MW

15 plants · 412 MW

14 plants · 1.1 GW

13 plants · 145 MW

11 plants · 2.9 GW

11 plants · 1.1 GW

Nebraska

9 plants · 330 MW

Missouri

8 plants · 1.1 GW

Illinois

8 plants · 45 MW

Hawaii

8 plants · 35 MW

Nevada

6 plants · 1.1 GW

Indiana

6 plants · 108 MW

South Dakota

4 plants · 1.6 GW

Iowa

4 plants · 184 MW

Ohio

4 plants · 123 MW

New Mexico

4 plants · 82 MW

Mississippi

4 plants · 35 MW

New Jersey

3 plants · 468 MW

Maryland

2 plants · 551 MW

Louisiana

2 plants · 241 MW

Rhode Island

2 plants · 3 MW

North Dakota

1 plants · 583 MW

Florida

1 plants · 44 MW

Kansas

1 plants · 7 MW

Largest Hydroelectric Plants (top 200 by capacity)

Showing top 200 of 1,452 plants. Browse by state above for the full list.