Grayson
Natural gas and battery storage project in Los Angeles County, California. 188.8 MW of nameplate capacity across 5 generators, operated by City of Glendale - (CA).
Also known as Grayson Power Plant · EIA plant 377
This project groups Grayson (EIA 377). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 188.8 MWNatural gas 113.8 · Battery storage 75.0
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- January 2004First generator online
- Operator
- City of Glendale - (CA)EIA operator ID 7294
- Grid
- LDWPBalancing authority LDWP
- Price nodes
- None linkedNo verified ISO node
- Location
- Los Angeles County, CA34.1556, −118.2782
- EIA plant ID
- 377EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Grayson produces
Free · EIA-923Net generation, 2025
14.4 GWh
14,434 MWh, final
Capacity factor, 2025
2.9%
2024: 9.3%
January to July 2026
2.31 GWh
Provisional
Range, 2015 to 2025
14.4–169.4
GWh a year. Low 2025, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 211,032 | Not reported | 12 of 12 |
| 2001 | 403,554 | Not reported | 12 of 12 |
| 2002 | 176,451 | Not reported | 12 of 12 |
| 2003 | 145,512 | Not reported | 11 of 12 |
| 2004 | 23,207 | Not reported | 2 of 12 |
| 2005 | 186,689 | Not reported | 12 of 12 |
| 2006 | 168,954 | Not reported | 12 of 12 |
| 2007 | 177,273 | Not reported | 12 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | 180,528 | Not reported | 12 of 12 |
| 2010 | 186,884 | Not reported | 12 of 12 |
| 2011 | 171,848 | 6.5% | 12 of 12 |
| 2012 | 177,785 | Not reported | 12 of 12 |
| 2013 | 161,997 | Not reported | 12 of 12 |
| 2014 | 159,274 | 6.0% | 12 of 12 |
| 2015 | 169,420 | Not reported | 12 of 12 |
| 2016 | 144,647 | Not reported | 12 of 12 |
| 2017 | 145,166 | 5.5% | 12 of 12 |
| 2018 | 140,780 | 5.3% | 12 of 12 |
| 2019 | 80,469 | 3.1% | 12 of 12 |
| 2020 | 116,070 | 4.4% | 12 of 12 |
| 2021 | 146,055 | Not reported | 12 of 12 |
| 2022 | 81,877 | 3.1% | 12 of 12 |
| 2023 | 8,672 | 0.7% | 6 of 12 |
| 2024 | 46,962 | 9.3% | 12 of 12 |
| 2025 | 14,434 | 2.9% | 12 of 12 |
| 2026 (provisional, partial year) | 2,312 | 0.8% | 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
9,310
US short tons. 2024: 28,925
SO₂, 2025
0
US short tons
NOx, 2025
1
US short tons
CO₂ per MWh, calculated
0.64 t
About 1,290 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (4, 5, 9), matched to EIA plant 377 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, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 9 | Natural Gas Fired Combustion Turbine | 57.4 | January 2004 |
| 10 | Batteries | 75.0 | August 2026 |
| 11 | Natural Gas Internal Combustion Engine | 18.8 | August 2026 |
| 12 | Natural Gas Internal Combustion Engine | 18.8 | August 2026 |
| 13 | Natural Gas Internal Combustion Engine | 18.8 | August 2026 |
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 City of Glendale - (CA) 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 Grayson
More plants operated by City of Glendale - (CA)
Questions about Grayson
How much power does Grayson produce?
Grayson reported 14,434 MWh (14.4 GWh) of net generation in 2025, a 2.9% capacity factor on 188.8 MW of nameplate capacity. From January to July 2026 it reported 2.31 GWh, which is provisional.
Where is Grayson?
Grayson is in Los Angeles County, California, at 34.1556, −118.2782. It is in the Los Angeles Department of Water and Power balancing area (LDWP).
Who operates Grayson?
EIA-860M for August 2026 lists City of Glendale - (CA) as the operator (EIA operator ID 7294). The operator is not always the owner.
Is Grayson a natural gas or a battery storage plant?
Both. Natural gas capacity totals 113.8 MW and battery storage capacity totals 75 MW.
When did Grayson start operating?
Its first generator began operating in January 2004, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page