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25 MW Muni. Waste operating in Blue Earth, MN — Midcontinent Independent Transmission System Operator, Inc..
25 MW
Nameplate Capacity
2
Generators
units
Municipal Solid Waste
Technology
1948
Operating Since
Coordinates
44.1967, -94.0009
County
Blue Earth, MN
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Northern States Power Co - Minnesota | Northern States Power Co | — |
| Owner(s) | Northern States Power Co - Minnesota | Xcel Energy | — |
| Status | Operating | operating | — |
The Wilmarth plant, located in Blue Earth County, Minnesota, is a 25 MW waste-to-energy facility. It began operating in 1948 and is owned and operated by Northern States Power Co - Minnesota, a subsidiary of Xcel Energy. The plant utilizes municipal solid waste (MSW) as its primary fuel source across its two generators. Wilmarth operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region.
In the most recent year of data, Wilmarth generated 98,230 MWh of electricity, achieving a capacity factor of 44.9%. The plant's installed cost was $2,198.12 per kW, according to FERC data. Wilmarth is ranked as the second-largest of four MSW plants in Minnesota, and 35th out of 56 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
8.8K MWh
Latest Month
98.2K MWh
Annual Generation
44.9%
Capacity Factor
CO₂ Intensity
2186 lb/MWh
NOx
9 lb/MWh
SO₂
3 lb/MWh
CH₄
1 lb/MWh
N₂O
0.178 lb/MWh
Capacity Factor
44.3%
Annual Net Gen
97 GWh
CO₂eq
2271 lb/MWh
Subregion
MRO West
Steam turbine · Northern States Power Company (Minnesota) · Data from 2015–2024
$3,446/kW
Installed Cost
$99/kW
Annual CapEx
$106.1/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Summit Avenue Substation · 115 kV
Substation Distance
< 10 km
Operator
Xcel Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
NSP WILMART WILMAR_1_UNIT
Pricing Hub
MINN.HUB
Node Source
EIA-860 direct report
Last updated 2026-03-26
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