Allen S King
Coal power plant in Washington County, Minnesota. 598.4 MW of nameplate capacity across 1 generator, operated by Northern States Power Co - Minnesota.
Also known as Allen S. King Power Plant · EIA plant 1915
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 598.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- March 1958First generator online
- Operator
- Northern States Power Co - MinnesotaEIA operator ID 13781
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Washington County, MN45.0300, −92.7786
- EIA plant ID
- 1915EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Allen S King produces
Free · EIA-923Net generation, 2025
890 GWh
889,847 MWh, final
Capacity factor, 2025
17.0%
2024: 10.3%
January to July 2026
547 GWh
Provisional
Range, 2015 to 2025
0.5–3.0
TWh a year. Low 2024, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 3,521,617 | Not reported | 12 of 12 |
| 2001 | 3,227,806 | Not reported | 12 of 12 |
| 2002 | 3,311,959 | Not reported | 12 of 12 |
| 2003 | 3,431,733 | Not reported | 12 of 12 |
| 2004 | 3,085,969 | Not reported | 12 of 12 |
| 2005 | 2,796,588 | Not reported | 12 of 12 |
| 2006 | 1,665,903 | Not reported | 12 of 12 |
| 2007 | 729,913 | Not reported | 12 of 12 |
| 2008 | 3,174,392 | Not reported | 12 of 12 |
| 2009 | 3,450,748 | Not reported | 12 of 12 |
| 2010 | 3,490,060 | 66.6% | 12 of 12 |
| 2011 | 3,423,920 | 65.3% | 12 of 12 |
| 2012 | 3,364,279 | 64.0% | 12 of 12 |
| 2013 | 2,528,928 | 48.2% | 12 of 12 |
| 2014 | 707,352 | 41.0% | 4 of 12 |
| 2015 | 3,030,017 | 57.8% | 12 of 12 |
| 2016 | 2,715,573 | 51.7% | 12 of 12 |
| 2017 | 2,913,347 | 55.6% | 12 of 12 |
| 2018 | 2,698,691 | 51.5% | 12 of 12 |
| 2019 | 1,739,179 | 33.2% | 12 of 12 |
| 2020 | 761,300 | 14.5% | 12 of 12 |
| 2021 | 1,297,884 | 24.8% | 12 of 12 |
| 2022 | 1,171,141 | 22.3% | 12 of 12 |
| 2023 | 928,387 | 17.7% | 12 of 12 |
| 2024 | 543,856 | 10.3% | 12 of 12 |
| 2025 | 889,847 | 17.0% | 12 of 12 |
| 2026 (provisional, partial year) | 547,181 | 18.0% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
1.08M
US short tons. 2024: 669,072
SO₂, 2025
558
US short tons
NOx, 2025
494
US short tons
CO₂ per MWh, calculated
1.21 t
About 2,423 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (1), matched to EIA plant 1915 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
28,152
million gallons
Consumption, 2024
56
million gallons
Source
Lake St. Croix
Surface, Fresh. Once-through
Watershed stress
Very low/none · 0.183
USGS SUI, HUC12 City of Stillwater-Lake Saint Croix
12 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Steam Coal | 598.4 | March 1958 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Northern States Power Co - Minnesota as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
300 analyst questions a month, plus MCP
Query Allen S King and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Allen S King
More plants operated by Northern States Power Co - Minnesota
Questions about Allen S King
How much power does Allen S King produce?
Allen S King reported 889,847 MWh (890 GWh) of net generation in 2025, a 17.0% capacity factor on 598.4 MW of nameplate capacity. From January to July 2026 it reported 547 GWh, which is provisional.
Where is Allen S King?
Allen S King is in Washington County, Minnesota, at 45.0300, −92.7786. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Allen S King?
EIA-860M for August 2026 lists Northern States Power Co - Minnesota as the operator (EIA operator ID 13781). The operator is not always the owner.
When did Allen S King start operating?
Its first generator began operating in March 1958, according to EIA-860M.
Does InfraMap have power prices for Allen S King?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Allen S King, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page