Seven Mile Hill — Plant Summary
- EIA Plant ID
- 56843
- Capacity
- 146.2 MW
- Primary Fuel
- Wind
- Technology
- Onshore Wind Turbine
- Status
- Operating
- Location
- Carbon, WY
- Operating Since
- 2008
- Generators
- 2
- Operator
- PacifiCorp
- Parent Company
- Berkshire Hathaway
- Annual Generation
- 399,752 MWh
- Capacity Factor
- 31.1%
- Balancing Authority
- PacifiCorp - East
- ISO/RTO
- —
- NERC Region
- WECC
Seven Mile Hill
OperatingWindGEM: retired
Ranked #15 of 34 Wind plants in WY#548 of 1442 nationally
146.2 MW Wind operating in Carbon, WY — PacifiCorp - East
EIAGEMWD
146.2 MW
Nameplate Capacity
2
Generators
units
Onshore Wind Turbine
Technology
2008
Operating Since
Location
Coordinates
41.9203, -106.3758
County
Carbon, WY
Nearby Plants
- Ekola FlatsWind250.9 MW · 2.0 km
- Two Rivers Wind FacilityWind6.1 MW · 17.3 km
- DunlapWind129.5 MW · 22.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | PacifiCorp | EDF Renewables | — |
| Owner(s) | PacifiCorp | Berkshire Hathaway | — |
| Status | Operating | retired | — |
Ownership Chain
About
Seven Mile Hill is a 146.2 MW wind power plant located in Carbon County, Wyoming. The facility began operating in 2008 and is owned by Berkshire Hathaway, with PacifiCorp acting as the operator. The plant utilizes two onshore wind turbine generators. The wind turbines have a hub height of 80 meters and a rotor diameter of 91 meters, and were manufactured by GE Wind, model GE1.85-91. Seven Mile Hill ranks as the 15th largest out of 24 wind plants in Wyoming, and 542nd nationally out of 734 wind plants.
The plant operates within the PacifiCorp - East balancing authority, which falls under the Western Electricity Coordinating Council (WECC) NERC region. In the most recent year of data, Seven Mile Hill generated 399,752 MWh, achieving a capacity factor of 31.1%. Financial data indicates a power purchase agreement (PPA) price of $10.78 per MWh, as reported in FERC EQRs.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
PacifiCorp - East
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Interconnection Queue1 projectBeta
OperationalWind127.5 MWWest
Generation
64.8K MWh
Latest Month
399.8K MWh
Annual Generation
31.1%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Electric Quarterly ReportsHIGH
$10.8/MWh
PPA Price
PacifiCorp
Contract Seller
Per-Unit Cost Trends
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (6)Beta
Industry·corporate
PacifiCorp mulls breakup that could align Wyoming with other pro-coal states
by Dustin Bleizeffer, WyoFile Wyoming and Utah may get what they've been pining for in recent years: the breakup of PacifiCorp.
PacifiCorp (other)Wyoming (other)
Oil City News·1 years ago
Grid·capacity addition
Greenlit powerlines forecast Wyoming wind energy boom
Developers are poised to double Wyoming's wind energy capacity, replacing coal as the state's top source of electrical generation.
Wyoming (other)
Canary Media·3 years ago
Regulatory·state puc
Lawmakers move to limit state aid to communities stressed by large construction
Reform proponents: Wyoming's method of providing aid to communities impacted by large industrial development should be narrowed.
Wyoming (other)
WyoFile·4 years ago
Industry·other
On the Horizon in the Cowboy State: Wind Turbines
Wyoming, the country's top coal producer, is wrangling support for wind power—and not a moment too soon.
Wyoming (other)
NRDC·7 years ago
Last updated 2026-03-14
View all 6 articles