How many hydro power plants are in ERCOT?

ERCOT has 19 operating utility-scale hydro power plants with 0.6 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest hydro power plant in ERCOT?

Marshall Ford in Travis County, Texas is the largest, at 108 MW. It came online in 1941.

How many hydro power plants were built in ERCOT in 2025?

0 hydro power plants came online in ERCOT in 2025, with 0 MW of capacity.

Who is developing hydro power plants in ERCOT?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Hydro power plants in ERCOT

ERCOT has 19 operating hydro power plants with 0.6 GW of capacity.

Operating19

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

ERCOT had 19 hydro power plants online in 2016 and 19 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Hydro power plants online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest hydro power plants in ERCOT

Operating, by capacity

#	Hydro power plant	Location	Year online	Capacity
1	Marshall Ford	Travis County, Texas	1941	108 MW
2	Denison	Grayson County, Texas	1949	104 MW
3	Amistad Dam & Power	Val Verde County, Texas	1983	66 MW
4	Buchanan Dam (TX)	Llano County, Texas	1950	55 MW
5	Granite Shoals	Burnet County, Texas	1951	54 MW
6	Whitney	Bosque County, Texas	1953	42 MW
7	Marble Falls	Burnet County, Texas	1951	40 MW
8	Falcon Dam & Power	Starr County, Texas	1954	32 MW
9	Austin	Travis County, Texas	1940	18 MW
10	Inks	Burnet County, Texas	1938	15 MW

Hydro power plants that came online most recently in ERCOT

Newest first

#	Hydro power plant	Location	Year online	Capacity
1	Lewisville	Denton County, Texas	1992	3 MW
2	Canyon	Comal County, Texas	1989	6 MW
3	Amistad Dam & Power	Val Verde County, Texas	1983	66 MW
4	Falcon Dam & Power	Starr County, Texas	1954	32 MW
5	Whitney	Bosque County, Texas	1953	42 MW
6	Marble Falls	Burnet County, Texas	1951	40 MW
7	Granite Shoals	Burnet County, Texas	1951	54 MW
8	Buchanan Dam (TX)	Llano County, Texas	1950	55 MW
9	Denison	Grayson County, Texas	1949	104 MW
10	Marshall Ford	Travis County, Texas	1941	108 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks hydro power plants

Operating hydro power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about hydro power plants in ERCOT

How many hydro power plants are in ERCOT?: ERCOT has 19 operating utility-scale hydro power plants with 0.6 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest hydro power plant in ERCOT?: Marshall Ford in Travis County, Texas is the largest, at 108 MW. It came online in 1941.
How many hydro power plants were built in ERCOT in 2025?: 0 hydro power plants came online in ERCOT in 2025, with 0 MW of capacity.
Who is developing hydro power plants in ERCOT?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.