How many hydroelectric power plants are planned in Montana?

1, for 7 MW of nameplate capacity. These are generators developers have reported to EIA, not generators that exist.

What do the status letters mean?

EIA files each planned generator under a status: regulatory approvals pending, under construction at or below half complete, under construction more than half complete, construction complete but not yet in commercial operation, or planned but not yet started. Each row shows its own.

Do these projects always get built?

No. EIA keeps a separate Canceled or Postponed sheet, and projects move between the sheets month to month. This page is the Planned sheet for 2026-07 and nothing more.

Planned hydroelectric power plants in Montana

What EIA-860M's Planned sheet says is coming in Montana: 1 hydroelectric power plants totalling 7 MW, each with the in-service year its developer reported and the construction status EIA records. A planned project is not a built one.

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

Planned projects: 1; 2 generating units
Proposed capacity: 7 MW
Earliest in-service year: 2028
Latest in-service year: 2029

Map of planned hydroelectric power plants in Montana

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List of planned hydroelectric power plants in Montana

Planned hydroelectric power plants in Montana

HauserConventional Hydroelectric	NorthWestern Energy (MT Hydro)	Lewis and Clark	7	2	2028	Planned for installation

Where they are in the build

Planned for installation1

Planned hydroelectric power plants in Montana: FAQ

How many hydroelectric power plants are planned in Montana?: 1, for 7 MW of nameplate capacity. These are generators developers have reported to EIA, not generators that exist.
What do the status letters mean?: EIA files each planned generator under a status: regulatory approvals pending, under construction at or below half complete, under construction more than half complete, construction complete but not yet in commercial operation, or planned but not yet started. Each row shows its own.
Do these projects always get built?: No. EIA keeps a separate Canceled or Postponed sheet, and projects move between the sheets month to month. This page is the Planned sheet for 2026-07 and nothing more.