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923.3 MW Conventional Steam Coal (923 MW) + Petroleum Liquids (1 MW) operating in Itasca, MN — Midcontinent Independent Transmission System Operator, Inc..
923.3 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Conventional Steam Coal + Petroleum Liquids
1973
Operating Since
Coordinates
47.2611, -93.6528
County
Itasca, MN
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | ALLETE, Inc. | ALLETE | — |
| Owner(s) | ALLETE, Inc., WPPI Energy | ALLETE | — |
| Status | Operating | — | — |
Clay Boswell is a 923.3 MW hybrid power plant located in Itasca County, Minnesota. The plant, which began operating in 1973, is owned and operated by ALLETE, Inc. It utilizes conventional steam coal as its primary fuel, with petroleum liquids also listed as a technology. Clay Boswell is the second-largest of four coal plants in Minnesota, and ranks 38th out of 75 coal plants nationally.
The plant consists of three generators and operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region. Its latest annual generation was 5,808,694 MWh, achieving a capacity factor of 71.9%. Financial data indicates a power purchase agreement (PPA) price of $31.5 per MWh, as reported to FERC.
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
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
534.1K MWh
Latest Month
5.8M MWh
Annual Generation
71.9%
Capacity Factor
CO₂ Intensity
2254 lb/MWh
NOx
0.926 lb/MWh
SO₂
0.230 lb/MWh
CH₄
0.265 lb/MWh
N₂O
0.038 lb/MWh
Capacity Factor
62.3%
Annual Net Gen
5042 GWh
CO₂eq
2272 lb/MWh
Subregion
MRO West
ALLETE, Inc. · Data from 2019–2025
$40.0/MWh
PPA Price
Market Position
ISO/RTO Market
MISO
LMP Node
MP.MP_BOS4
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
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