Allen S King — Plant Summary
- EIA Plant ID
- 1915
- Capacity
- 598.4 MW
- Primary Fuel
- Coal
- Technology
- Conventional Steam Coal
- Status
- Operating
- Location
- Washington, MN
- Operating Since
- 1958
- Generators
- 1
- Operator
- Northern States Power Co - Minnesota
- Parent Company
- —
- Annual Generation
- 918,722 MWh
- Capacity Factor
- 17.4%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Allen S King
OperatingSub. Coal
Ranked #3 of 8 Sub. Coal plants in MN#59 of 103 nationally
598.4 MW Sub. Coal operating in Washington, MN — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
598.4 MW
Nameplate Capacity
1
Generators
unit
Conventional Steam Coal
Technology
1958
Operating Since
Location
Coordinates
45.0300, -92.7786
County
Washington, MN
Nearby Plants
- Novel MNDot Solar CSGSolar1 MW · 9.6 km
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- SV CSG AFTON ISolar1 MW · 11.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Northern States Power Co - Minnesota | — | — |
| Owner(s) | Northern States Power Co - Minnesota | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Allen S King power plant is located in Washington County, Minnesota. It has a total capacity of 598.4 MW and began operating in 1958. The plant is owned and operated by Northern States Power Co - Minnesota. It utilizes a single generator with conventional steam coal technology, using subbituminous coal (SUB) as its primary fuel. The plant operates within the Midcontinent Independent Transmission System Operator, Inc. balancing authority and the MRO NERC region.
In the most recent year with available data, the Allen S King plant generated 918,722 MWh of electricity, achieving a capacity factor of 17.4%. The plant's installed cost was $1161.16 per kW, according to FERC data. Allen S King is ranked as the 3rd largest of 4 coal plants in Minnesota, and 51st of 75 coal plants nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
345 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
159.3K MWh
Latest Month
918.7K MWh
Annual Generation
17.4%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$1,198/kW
Installed Cost
$47.7/MWh
Operating Cost
Northern States Power Company (Minnesota)
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
King Plant Substation · 345 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
NSP KING KING_1_UNIT
Pricing Hub
MINN.HUB
Node Source
EIA-860 direct report
News & Articles (10)Beta
Industry·corporate
Xcel Energy to close long-standing Bayport plant
After nearly 60 years of operation, Xcel Energy will officially close the Allen S. King Plant in Bayport in 2028. The closure is part of the...
Xcel Energy (operator)
Press Publications·5 months ago
Hazards·other
3 MN FIREFIGHTERS INJURED AT POWER PLANT EXPLOSION
Three Burnsville firefighters were injured yesterday morning at an explosion and fire in a smoldering coal bin at Xcel Energy's Black Dog...
Xcel Energy (operator)
Firefighter Close Calls·6 months ago
Industry·corporate
Toxic Coal Ash in Minnesota: Addressing Coal Plants’ Hazardous Legacy
Massive quantities of toxic coal ash are stored at 12 coal-fired power plant sites in Minnesota.
Earthjustice·6 months ago
Industry·corporate
Xcel Energy provides update on Ten Mile Creek Solar Project to St. Croix County officials
EAU CLAIRE, Wis. June 4, 2025- During a recent meeting with St. Croix County officials, Xcel Energy provided a comprehensive update on the...
Xcel Energy (developer)St. Croix County (regulator)
Xcel Energy Newsroom·9 months ago
Last updated 2026-03-14
View all 10 articles