Bob Glanzer Generating Station
Beadle County, South Dakota · EIA plant ID 65295 · Operator: NorthWestern Energy - (SD)
Nameplate69MWSummer 55 MW
Generators6in service
Net generation99GWh12 mo to Dec 2025
Capacity factor20%gas/coal/oil units, summer MW
Heat rate8,520Btu/kWhfossil units, electric fuel, HHV
First online2022Runs as intermediate
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) |
|---|---|---|---|
| 2022 | 39.9 | 11.0% | 8,552 |
| 2023 | 96.4 | 19.9% | 8,666 |
| 2024 | 104.1 | 21.5% | 8,269 |
| 2025 | 99.1 | 20.5% | 8,520 |
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 |
|---|---|---|---|---|---|---|---|---|
| HG1 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
| HG2 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
| HG3 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
| HG4 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
| HG5 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
| HG6 | Natural Gas Internal Combustion Engine | IC | 11.5 | 9.2 | Apr 2022 | Operating | — | coming soon |
Owner / operator
Operator: NorthWestern Energy - (SD). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| NorthWestern Energy - (SD) | 100.0% | 69 MW |
Nearby plants
Within 80 km.
| Huron | retired | 0 km |
| Sweetland Wind Farm, LLC | 200 MW | 50 km |
| Wessington Springs | 51 MW | 52.7 km |
| Lake Preston | 24 MW | 62.9 km |
| POET Bioprocessing- Mitchell | 4 MW | 63.3 km |
| Clark (SD) | 3 MW | 66.3 km |