Wild Springs — Plant Summary
- EIA Plant ID
- 67018
- Capacity
- 128 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Pennington, SD
- Operating Since
- 2024
- Generators
- 1
- Operator
- National Grid Renewables
- Parent Company
- —
- Annual Generation
- 263,684 MWh
- Capacity Factor
- 23.5%
- Balancing Authority
- Western Area Power Administration - Rocky Mountain Region
- ISO/RTO
- —
- NERC Region
- MRO
Wild Springs
OperatingSolar
Ranked #1 of 4 Solar plants in SD#614 of 7447 nationally
128 MW Solar operating in Pennington, SD — Western Area Power Administration - Rocky Mountain Region
EIAGEM
128 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2024
Operating Since
Location
Coordinates
44.0751, -102.8442
County
Pennington, SD
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | National Grid Renewables | National Grid Renewables [100%] | — |
| Owner(s) | National Grid Renewables | National Grid Renewables [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as National Grid Renewables [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Wild Springs is a 128 MW solar photovoltaic power plant located in Pennington County, South Dakota. The plant, which began operating in 2024, is owned and operated by National Grid Renewables. It utilizes single-axis tracking technology for its solar panels and consists of a single generator. Wild Springs is the largest solar plant in South Dakota and ranks 466th nationally among solar facilities. The plant operates within the Western Area Power Administration - Rocky Mountain Region balancing authority and the MRO NERC region.
In its most recent year of operation, Wild Springs generated 263,684 MWh of electricity, achieving a capacity factor of 23.5%. Financial data for the plant is available from LBNL, though specific details are not provided.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Western Area Power Administration - Rocky Mountain Region
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
OperationalSolar128 MWSPP
Generation
7.7K MWh
Latest Month
263.7K MWh
Annual Generation
23.5%
Capacity Factor
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$27.3/MWh
LCOE (Levelized Cost)
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (8)Beta
Regulatory·federal policy
States scramble to complete renewable energy projects before tax credits expire
The abrupt termination of tax credits for clean energy projects is perhaps the most drastic blow that President Donald Trump has struck in...
Donald Trump (other)
South Dakota Searchlight·7 months ago
Industry·corporate
Largest solar farm in South Dakota comes online
The title of “largest solar farm in South Dakota” officially belongs to a plant east of Rapid City. National Grid Renewables...
National Grid Renewables (developer)
The Dakota Scout·1 years ago
Industry·corporate
South Dakota’s largest solar farm just came online
National Grid Renewables just brought South Dakota's largest solar farm online in Pennington County. Wild Springs is a 128-megawatt (MW)...
National Grid Renewables (developer)
Electrek·1 years ago
Industry·corporate
New developments have South Dakota's solar power projects on the rise
The solar surge began in September 2023 when power began flowing from the 80-megawatt Fall River Solar facility near Oelrichs, southeast of...
Argus Leader·1 years ago
Last updated 2026-03-14
View all 8 articles