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128 MW Solar operating in Pennington, SD — Western Area Power Administration - Rocky Mountain Region
128 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2024
Operating Since
Coordinates
44.0751, -102.8442
County
Pennington, SD
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Geronimo Power | National Grid Renewables | — |
| Owner(s) | National Grid Renewables | National Grid Renewables | — |
| Status | Operating | operating | — |
GEM identifies the owner as National Grid Renewables
This entity is not yet in the GEM ownership database — chain unavailable.
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
Grid Region
Mountain West
Market
Bilateral Market
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
7.7K MWh
Latest Month
263.7K MWh
Annual Generation
23.5%
Capacity Factor
Data from 2024
$27.3/MWh
LCOE
This plant is in a bilateral market territory without organized wholesale pricing. Nodal pricing data is not available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about Wild SpringsWestern Area Power Administration - Rocky Mountain Region (WACM)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP