Spirit Mound
Clay County, South Dakota · EIA plant ID 6092 · Operator: Basin Electric Power Coop
Nameplate135MWSummer 95 MW
Generators2in service
Net generation3GWh12 mo to Aug 2026
Capacity factor0%gas/coal/oil units, summer MW
Heat rate16,034Btu/kWhfossil units, electric fuel, HHV
First online1978Runs as rarely runs
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 3.1 | 0.4% | 14,074 |
| 2002 | 1.2 | 0.1% | 15,075 |
| 2003 | 2.3 | 0.3% | 14,554 |
| 2004 | 2.9 | 0.3% | 13,210 |
| 2005 | 0.2 | 0.0% | 14,884 |
| 2006 | 0.4 | 0.1% | 14,023 |
| 2007 | 6.8 | 0.8% | 12,812 |
| 2008 | 3 | 0.4% | 12,922 |
| 2009 | 0.3 | 0.0% | 16,076 |
| 2010 | 0.2 | 0.0% | 15,206 |
| 2011 | 1.2 | 0.1% | 13,919 |
| 2012 | 1.4 | 0.2% | 14,475 |
| 2013 | 1 | 0.1% | 14,173 |
| 2014 | 1.6 | 0.2% | 13,154 |
| 2015 | 0.2 | 0.0% | 26,816 |
| 2016 | 0.8 | 0.1% | 14,955 |
| 2017 | 0.3 | 0.0% | 20,312 |
| 2018 | 0.8 | 0.1% | 15,217 |
| 2019 | 5.4 | 0.7% | 13,823 |
| 2020 | 2 | 0.2% | 15,247 |
| 2021 | 10.6 | 1.3% | 12,816 |
| 2022 | 6.8 | 0.8% | 14,773 |
| 2023 | 8.8 | 1.1% | 13,521 |
| 2024 | 4.7 | 0.6% | — |
| 2025 | 2.4 | 0.3% | 16,322 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | GT | 67.5 | 50 | Jun 1978 | Operating | — | coming soon |
| 2 | Petroleum Liquids | GT | 67.5 | 45 | Jun 1978 | Operating | — | coming soon |
Owner / operator
Operator: Basin Electric Power Coop. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Basin Electric Power Coop | 100.0% | 135 MW |
Nearby plants
Within 80 km.
| Yankton | 13 MW | 29.6 km |
| Gavins Point | 132 MW | 40.4 km |
| Prevailing Wind Park | 220 MW | 46.3 km |
| POET Biorefining - Hudson | 4 MW | 47.3 km |
| Laurel | 4 MW | 52.6 km |
| POET Biorefining - Chancellor | 5 MW | 52.6 km |