Grays Harbor Energy Facility
Natural gas power plant in Grays Harbor County, Washington. 714.9 MW of nameplate capacity across 3 generators, operated by Invenergy Services LLC.
Also known as Grays Harbor Energy · EIA plant 7999
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Key facts
- Capacity
- 714.9 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- May 2008First generator online
- Operator
- Invenergy Services LLCEIA operator ID 49893
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Grays Harbor County, WA46.9692, −123.4800
- EIA plant ID
- 7999EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Grays Harbor Energy Facility produces
Free · EIA-923Net generation, 2025
3.65 TWh
3,649,445 MWh, final
Capacity factor, 2025
58.3%
2024: 44.3%
January to July 2026
245 GWh
Provisional
Range, 2015 to 2025
2.4–3.6
TWh a year. Low 2020, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | 1,675,135 | Not reported | 12 of 12 |
| 2010 | 1,142,112 | 20.1% | 12 of 12 |
| 2011 | 230,717 | 4.1% | 12 of 12 |
| 2012 | 156,458 | 2.7% | 12 of 12 |
| 2013 | 1,534,674 | Not reported | 12 of 12 |
| 2014 | 1,705,387 | 30.0% | 12 of 12 |
| 2015 | 3,005,284 | 52.8% | 12 of 12 |
| 2016 | 2,818,292 | Not reported | 12 of 12 |
| 2017 | 2,834,246 | 46.4% | 12 of 12 |
| 2018 | 2,478,312 | 40.5% | 12 of 12 |
| 2019 | 3,407,096 | 55.7% | 12 of 12 |
| 2020 | 2,360,675 | 38.5% | 12 of 12 |
| 2021 | 3,540,862 | Not reported | 12 of 12 |
| 2022 | 3,163,202 | 50.5% | 12 of 12 |
| 2023 | 3,618,169 | 57.8% | 12 of 12 |
| 2024 | 2,779,650 | 44.3% | 12 of 12 |
| 2025 | 3,649,445 | 58.3% | 12 of 12 |
| 2026 (provisional, partial year) | 244,989 | 6.7% | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
1.58M
US short tons. 2024: 1.18M
SO₂, 2025
13
US short tons
NOx, 2025
95
US short tons
CO₂ per MWh, calculated
0.43 t
About 864 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 7999 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
581
million gallons
Consumption, 2024
480
million gallons
Source
Ranney Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Very low/none · 0.138
USGS SUI, HUC12 Metcalf Slough-Chehalis River
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CT1 | Natural Gas Fired Combined Cycle | 198.9 | May 2008 |
| CT2 | Natural Gas Fired Combined Cycle | 198.9 | May 2008 |
| ST1 | Natural Gas Fired Combined Cycle | 317.1 | May 2008 |
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 Invenergy Services LLC 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.
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Power plants near Grays Harbor Energy Facility
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Questions about Grays Harbor Energy Facility
How much power does Grays Harbor Energy Facility produce?
Grays Harbor Energy Facility reported 3,649,445 MWh (3.65 TWh) of net generation in 2025, a 58.3% capacity factor on 714.9 MW of nameplate capacity. From January to July 2026 it reported 245 GWh, which is provisional.
Where is Grays Harbor Energy Facility?
Grays Harbor Energy Facility is in Grays Harbor County, Washington, at 46.9692, −123.4800. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Grays Harbor Energy Facility?
EIA-860M for August 2026 lists Invenergy Services LLC as the operator (EIA operator ID 49893). The operator is not always the owner.
When did Grays Harbor Energy Facility start operating?
Its first generator began operating in May 2008, according to EIA-860M.
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
- 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