Sweetwater Solar — Plant Summary
- EIA Plant ID
- 61369
- Capacity
- 92 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Sweetwater, WY
- Operating Since
- 2018
- Generators
- 1
- Operator
- Onward Energy
- Parent Company
- —
- Annual Generation
- 173,282 MWh
- Capacity Factor
- 21.5%
- Balancing Authority
- PacifiCorp - East
- ISO/RTO
- —
- NERC Region
- WECC
Sweetwater Solar
OperatingSolar
Ranked #3 of 3 Solar plants in WY#823 of 7447 nationally
92 MW Solar operating in Sweetwater, WY — PacifiCorp - East
EIAGEMWD
92 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2018
Operating Since
Location
Coordinates
41.6275, -109.6826
County
Sweetwater, WY
Nearby Plants
- General ChemicalBit. Coal30 MW · 7.1 km
- Genesis AlkaliSub. Coal41 MW · 10.8 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Onward Energy | 174 Power Global | — |
| Owner(s) | 174 Power Global Corp. | 174 Power Global [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as 174 Power Global [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
The Sweetwater Solar PV Park is a 97.8-megawatt photovoltaic power station located in Sweetwater County, Wyoming, approximately 11 miles northwest of Green River, along State Highway 372. The project, developed by Clenera, Energy of Utah, was commissioned in December 2018. Covering an area of 703 acres, it generates approximately 186,575 megawatt-hours of electricity annually—enough to power 17,000 households while offsetting 44,000 metric tons of carbon dioxide emissions each year.
Read more on WikipediaSweetwater Solar is a 92 MW solar photovoltaic power plant located in Sweetwater County, Wyoming. The plant, which began operating in 2018, is owned and operated by Onward Energy. It utilizes single-axis tracking technology to maximize solar energy capture. Sweetwater Solar is the third-largest solar plant in Wyoming and ranks 660th nationally out of 7,108 solar facilities.
The plant's primary fuel source is the sun. In its most recent year of operation, Sweetwater Solar generated 173,282 MWh of electricity, achieving a capacity factor of 21.5%. The plant operates within the PacifiCorp - East balancing authority, which is part of the Western Electricity Coordinating Council (WECC) NERC region. Financial data is available for Sweetwater Solar from LBNL, indicating that it is one of the more closely tracked solar facilities in the US.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
PacifiCorp - East
Grid Voltage
34.5 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
6.3K MWh
Latest Month
173.3K MWh
Annual Generation
21.5%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$38.6/MWh
LCOE (Levelized Cost)
$21.2/MWh
Energy Value
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Industry·other
Wyoming: Coal Comes Back In Sweetwater County
W eeks before a federal shutdown swept the nation, the U.S. Department of the Interior (DOI) announced a strategic move toward accelerating what Secretary...
U.S. Department of the Interior (regulator)
Site Selection·3 months ago
Industry·other
Wyoming Exports 15 Times More Power Than It Uses, But Is Struggling With In-State Needs
Wyoming has long been one of the nation's largest energy producers, exporting 15 times more power than it consumes. But the state is...
Cowboy State Daily·9 months ago
Regulatory·federal policy
Trump Cancels $49M Wyoming Coal Carbon Capture Project
By Dustin Bleizeffer, Wyofile.com. Both the Trump administration and Wyoming lawmakers appear to be losing enthusiasm for advancing research...
SweetwaterNOW·9 months ago
Regulatory·federal policy
Feds finalize plan to expand solar energy in Wyoming
The plan opens 31.7 million acres across the West to industrial solar energy development, including some 3.8 million acres in Wyoming.
WyoFile·1 years ago
Last updated 2026-03-14
View all 10 articles