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125.5 MW Natural Gas operating in Whatcom, WA — Puget Sound Energy
125.5 MW
Nameplate Capacity
2
Generators
units
Natural Gas Fired Combined Cycle
Technology
1993
Operating Since
Coordinates
48.9902, -122.2738
County
Whatcom, WA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Puget Sound Energy Inc | Puget Sound Energy | — |
| Owner(s) | Puget Sound Energy Inc | PUGET HOLDINGS | — |
| Status | Operating | — | — |
The Sumas Power Plant is a 125.5 MW natural gas-fired combined cycle facility located in Whatcom County, Washington. The plant began operating in 1993 and consists of two generators. It is owned by PUGET HOLDINGS and operated by Puget Sound Energy Inc. The plant is within the Puget Sound Energy balancing authority and the WECC NERC region.
In the most recent year with available data, the Sumas Power Plant generated 675,821 MWh, achieving a capacity factor of 61.2%. According to available rankings, the plant is the 13th largest in Washington state out of 13 plants, and 867th nationally out of 945 plants. Financial data indicates an installed cost of $567.48 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
90.8K MWh
Latest Month
675.8K MWh
Annual Generation
61.2%
Capacity Factor
CO₂ Intensity
968 lb/MWh
NOx
0.133 lb/MWh
SO₂
Combined cycle · Puget Sound Energy, Inc. · Data from 2015–2024
$683/kW
Installed Cost
$17/kW
Annual CapEx
$37.3/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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ask pi about Sumas Power PlantPuget Sound Energy (PSEI)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.017 lb/MWh
CH₄
0.018 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
75.9%
Annual Net Gen
835 GWh
CO₂eq
969 lb/MWh
Subregion
WECC Northwest