4th largest plant in South Dakota · 840th nationally
Angus Anson is a natural gas power plant in South Dakota with a nameplate capacity of 406 MW. It generates roughly 232.3k MWh per year — enough to power about 22,122 average U.S. homes.
Its capacity factor of 7% reflects intermittent or peaking operation. At 1525 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Angus Anson |
|---|---|
| Operator | Northern States Power Co - Minnesota |
| City | Sioux Falls |
| County | Minnehaha County |
| State | South Dakota |
| ZIP | 57101 |
| Coordinates | 43.60347, -96.63560 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Natural Gas Fired Combustion Turbine | Natural Gas | 166 MW | Operating | 2005 |
| 1 | Natural Gas Fired Combustion Turbine | Natural Gas | 120 MW | Operating | 1994 |
| 2 | Natural Gas Fired Combustion Turbine | Natural Gas | 120 MW | Operating | 1994 |
| CO₂ | 177.1k metric tons |
|---|---|
| SO₂ | 1 metric tons |
| NOₓ | 70 metric tons |
| CO₂ Rate | 1525 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | MRO |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.