BLENHEIM GILBOA
OperatingHydro power plant
- Capacity
- 1,000 MW
- Primary fuel
- Hydro
- County
- Schoharie County
- Operator
- NEW YORK POWER AUTHORITY
- Status
- Operating
- Commissioned
- 1973
- EIA plant ID
- 2691
- Generators
- 4
- Technology
- Hydroelectric Pumped Storage
- Net generation (2024)
- -171 GWh
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 42.4426, -74.4478
BLENHEIM GILBOA, a 1,000 MW Hydro power plant in Schoharie County, New York. Operated by NEW YORK POWER AUTHORITY, commissioned 1973.
How BLENHEIM GILBOA compares
With 1,000 MW of capacity, BLENHEIM GILBOA ranks 11th among the 320 operating power plants Bywatts maps in New York and 2nd of the 153 operating Hydro plants in the state. It accounts for about 17% of New York's operating Hydro capacity and 2.6% of all operating capacity in the state. Nationally it is the 19th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1973, it is older than 58% of the 312 operating New York plants with a recorded commissioning year. Its operator, NEW YORK POWER AUTHORITY, runs 19 operating plants in New York totaling 5,870 MW.
EIA-860 lists 4 generators at the site with 1,000 MW of nameplate capacity, all hydroelectric pumped storage technology. The plant was a net consumer of electricity in 2024 (-171 GWh), which is typical of pumped storage.
Grid neighborhood
The nearest named substation is GILBOA (345 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 345 kV line owned by NEW YORK STATE ELEC & GAS CORP, under 0.1 miles away. Within 50 miles is one mapped data center, INOC Albany (80 State St) in Albany, about 38.2 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
BLENHEIM GILBOA is a 1,000 MW hydro power plant in Schoharie County, NY, operated by NEW YORK POWER AUTHORITY, commissioned in 1973. Schoharie County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 4th national percentile. Riverine flooding is the leading peril, rated Relatively Low by FEMA at the 85th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Schoharie County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Low | 85th | 4.4 of 5 | 1.8 |
| Hurricane | Relatively Low | 64th | 3.6 of 5 | 0.03 |
| Winter weather | Relatively Low | 48th | 2.9 of 5 | 20.5 |
| Ice storm | Relatively Low | 41st | 2.7 of 5 | 0.51 |
| Earthquake | Very Low | 36th | 2.5 of 5 | <0.01 |
| Tornado | Relatively Low | 23rd | 1.9 of 5 | 0.15 |
| Strong wind | Very Low | 21st | 1.8 of 5 | 1.4 |
| Lightning | Relatively Low | 12th | 1.5 of 5 | 27.3 |
| Wildfire | Very Low | 11th | 1.4 of 5 | <0.01 |
| Hail | Very Low | 9th | 1.4 of 5 | 2.8 |
| Heat wave | Very Low | 3rd | 1.1 of 5 | 1.2 |
Perils not assessed in Schoharie County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Schoharie County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.