ALTAMONT PASS WINDPLANT
Retired 2015Wind power plant
- Capacity
- 333 MW
- Primary fuel
- Wind
- County
- Alameda County
- Operator
- KENETECH WINDPOWER INC
- EIA plant ID
- 50712
- Coordinates
- 37.7341, -121.6516
ALTAMONT PASS WINDPLANT, a retired 333 MW Wind power plant in Alameda County, California. It was retired in 2015, according to EIA-860.
How ALTAMONT PASS WINDPLANT compares
It was retired in 2015 according to EIA-860, so it is not counted in California's operating fleet. It shares Alameda County with 10 other operating plants, including RUSSELL CITY ENERGY CENTER and DYNEGY OAKLAND POWER PLANT.
Grid neighborhood
The nearest named substation is ZOND WIND, about 0.7 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by PACIFIC GAS & ELECTRIC COMPANY, about 0.9 miles away. Another 19 operating power plants totaling 3,858 MW sit within 25 miles; the largest is DELTA ENERGY CENTER (944 MW, Natural Gas). Within 50 miles are 32 mapped data centers; the nearest is Hurricane Electric Fremont 1 in Fremont, about 22.8 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860 retirement records and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
ALTAMONT PASS WINDPLANT is a retired 333 MW wind power plant in Alameda County, CA, formerly operated by KENETECH WINDPOWER INC. Alameda County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.6 of 5 at the 16th national percentile. Earthquake is the leading peril, rated Very High by FEMA at the 100th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a wind plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Alameda County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Very High | 100th | 5.0 of 5 | 0.14 |
| Wildfire | Relatively High | 91st | 4.6 of 5 | <0.01 |
| Riverine flooding | Very High | 85th | 4.4 of 5 | 2.3 |
| Coastal flooding | Relatively High | 47th | 2.9 of 5 | 0.98 |
| Heat wave | Relatively High | 43rd | 2.7 of 5 | 7.1 |
| Tornado | Relatively Moderate | 11th | 1.4 of 5 | 0.09 |
| Hail | Relatively Low | 7th | 1.3 of 5 | 0.04 |
| Winter weather | Very Low | 4th | 1.2 of 5 | 0.69 |
| Strong wind | Very Low | 1st | 1.0 of 5 | 0.04 |
| Lightning | Relatively Low | 1st | 1.0 of 5 | 4.5 |
Perils not assessed in Alameda 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Alameda 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.