How many pumped storage hydro plants are in Missouri?

3, with 627 MW of nameplate capacity between them, spread over 3 counties. That is the EIA-860M operating count for 2026-07.

Is there a map of Missouri pumped storage hydro plants?

Yes — the map above. Each dot is one pumped storage hydro plant, sized by nameplate capacity and placed at the coordinates EIA files for it.

Which is the largest pumped storage hydro plant in Missouri?

Taum Sauk, at 408 MW. The table is sorted largest first, so the rest follow it.

Is there a pumped storage hydro plant near me in Missouri?

The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.

Which grid operator runs Missouri's pumped storage hydro plants?

No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Missouri is largely a vertically integrated utility rather than an organised market.

How current is this, and what is left out?

EIA-860M for 2026-07. Hydroelectric pumped storage. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.

Pumped Storage Hydro Plants in Missouri

Every operating pumped storage hydro plant in Missouri on EIA-860M for 2026-07: 3 plants, 10 generating units and 627 MW of nameplate capacity across 3 counties.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 3; 10 generating units
Nameplate capacity: 627 MW
Counties: 3
Grid operator: Mixed; no single ISO covers a majority

Map of pumped storage hydro plants in Missouri

Every one of the 3 plants is drawn at the coordinate EIA files for it.

Loading map…

Pumped storage · 3

List of pumped storage hydro plants in Missouri

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

pumped storage hydro plants in Missouri

Taum SaukHydroelectric Pumped Storage	Union Electric Co - (MO)	Reynolds	408	2	1963	Operating
Harry TrumanHydroelectric Pumped Storage	USCE-Kansas City District	Benton	161.4	6	1979	Operating
Clarence Cannon2 technologies	USCE-St Louis District	Ralls	58	2	1984	Operating

Largest pumped storage hydro plants in Missouri

1Taum SaukReynolds County, Missouri408 MW
2Harry TrumanBenton County, Missouri161.4 MW
3Clarence CannonRalls County, Missouri58 MW

Pumped storage hydro plants by county in Missouri

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

County	Plants	Nameplate MW
Reynolds	1	408
Benton	1	161.4
Ralls	1	58

Pumped Storage Hydro Plants in Missouri: FAQ

How many pumped storage hydro plants are in Missouri?: 3, with 627 MW of nameplate capacity between them, spread over 3 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of Missouri pumped storage hydro plants?: Yes — the map above. Each dot is one pumped storage hydro plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest pumped storage hydro plant in Missouri?: Taum Sauk, at 408 MW. The table is sorted largest first, so the rest follow it.
Is there a pumped storage hydro plant near me in Missouri?: The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs Missouri's pumped storage hydro plants?: No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Missouri is largely a vertically integrated utility rather than an organised market.
How current is this, and what is left out?: EIA-860M for 2026-07. Hydroelectric pumped storage. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.