Griffith Energy LLC
Natural gas power plant in Mohave County, Arizona. 655 MW of nameplate capacity across 3 generators, operated by Griffith Energy LLC.
Also known as Griffith Energy Facility · EIA plant 55124
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Key facts
- Capacity
- 655 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- January 2002First generator online
- Operator
- Griffith Energy LLCEIA operator ID 56090
- Grid
- GRIFBalancing authority GRIF
- Price nodes
- None linkedNo verified ISO node
- Location
- Mohave County, AZ35.0540, −114.1333
- EIA plant ID
- 55124EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Griffith Energy produces
Free · EIA-923Net generation, 2025
3.78 TWh
3,781,278 MWh, final
Capacity factor, 2025
65.9%
2024: 65.7%
January to July 2026
2.04 TWh
Provisional
Range, 2015 to 2025
1.9–3.8
TWh a year. Low 2017, 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 | 1,636,153 | Not reported | 12 of 12 |
| 2003 | 1,247,893 | Not reported | 11 of 12 |
| 2004 | 1,137,761 | Not reported | 12 of 12 |
| 2005 | 786,882 | Not reported | 12 of 12 |
| 2006 | 1,403,429 | Not reported | 12 of 12 |
| 2007 | 1,967,892 | Not reported | 12 of 12 |
| 2008 | 1,609,044 | Not reported | 12 of 12 |
| 2009 | 1,664,364 | Not reported | 12 of 12 |
| 2010 | 1,413,714 | 24.7% | 12 of 12 |
| 2011 | 1,287,215 | 22.5% | 12 of 12 |
| 2012 | 1,584,075 | 27.6% | 12 of 12 |
| 2013 | 2,110,812 | Not reported | 12 of 12 |
| 2014 | 2,411,226 | 42.1% | 12 of 12 |
| 2015 | 2,088,594 | 36.4% | 12 of 12 |
| 2016 | 2,086,732 | Not reported | 12 of 12 |
| 2017 | 1,940,236 | 33.8% | 12 of 12 |
| 2018 | 2,071,721 | 36.1% | 12 of 12 |
| 2019 | 2,981,217 | 56.6% | 11 of 12 |
| 2020 | 2,368,014 | 41.2% | 12 of 12 |
| 2021 | 3,449,007 | 60.1% | 12 of 12 |
| 2022 | 2,974,820 | 51.8% | 12 of 12 |
| 2023 | 3,670,670 | 64.0% | 12 of 12 |
| 2024 | 3,779,043 | 65.7% | 12 of 12 |
| 2025 | 3,781,278 | 65.9% | 12 of 12 |
| 2026 (provisional, partial year) | 2,035,670 | 61.1% | 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
1.65M
US short tons. 2024: 1.60M
SO₂, 2025
8
US short tons
NOx, 2025
124
US short tons
CO₂ per MWh, calculated
0.44 t
About 870 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (P1, P2), matched to EIA plant 55124 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
1,047
million gallons
Consumption, 2024
1,047
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
High · 0.603
USGS SUI, HUC12 Griffith Tank-Sacramento Wash
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 |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 176.6 | January 2002 |
| CTG2 | Natural Gas Fired Combined Cycle | 176.6 | January 2002 |
| STG | Natural Gas Fired Combined Cycle | 301.8 | January 2002 |
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 Griffith Energy 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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Questions about Griffith Energy
How much power does Griffith Energy LLC produce?
Griffith Energy LLC reported 3,781,278 MWh (3.78 TWh) of net generation in 2025, a 65.9% capacity factor on 655 MW of nameplate capacity. From January to July 2026 it reported 2.04 TWh, which is provisional.
Where is Griffith Energy LLC?
Griffith Energy LLC is in Mohave County, Arizona, at 35.0540, −114.1333. It is in the Griffith Energy, LLC balancing area (GRIF).
Who operates Griffith Energy LLC?
EIA-860M for August 2026 lists Griffith Energy LLC as the operator (EIA operator ID 56090). The operator is not always the owner.
When did Griffith Energy LLC start operating?
Its first generator began operating in January 2002, 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