Sierra Pinta BESS
Battery storage project in Yuma County, Arizona. 113 MW of nameplate capacity across 1 generator, operated by Leeward Asset Management, LLC.
Also known as EIA plant 67973
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 113 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 2025First generator online
- Operator
- Leeward Asset Management, LLCEIA operator ID 50123
- Grid
- AZPSBalancing authority AZPS
- Price nodes
- None linkedNo verified ISO node
- Location
- Yuma County, AZ32.9942, −113.5098
- EIA plant ID
- 67973EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sierra Pinta BESS produces
Free · EIA-923Net generation, 2025
−5.14 GWh
−5,140 MWh, final. 3 of 12 months reported
Battery discharge, 2025
26.6 GWh
Charge 25.6 GWh
January to July 2026
−19.2 GWh
Provisional
| 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 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | Not reported | Not reported | 0 of 12 |
| 2025 | −5,140 | Not reported | 3 of 12 |
| 2026 (provisional, partial year) | −19,214 | Not reported | 7 of 7 |
* 2026 covers January to July and is provisional. Battery plants can report negative net generation, when charging uses more energy than they discharge.
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 CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| SP01 | Batteries | 113.0 | October 2025 |
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 Leeward Asset Management, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Sierra Pinta BESS and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Sierra Pinta BESS
More plants operated by Leeward Asset Management, LLC
Questions about Sierra Pinta BESS
How much power does Sierra Pinta BESS produce?
Sierra Pinta BESS reported −5,140 MWh (−5.14 GWh) of net generation in 2025. From January to July 2026 it reported −19.2 GWh, which is provisional. 3 of 12 months were reported for 2025.
Where is Sierra Pinta BESS?
Sierra Pinta BESS is in Yuma County, Arizona, at 32.9942, −113.5098. It is in the Arizona Public Service Company balancing area (AZPS).
Who operates Sierra Pinta BESS?
EIA-860M for August 2026 lists Leeward Asset Management, LLC as the operator (EIA operator ID 50123). The operator is not always the owner.
When did Sierra Pinta BESS start operating?
Its first generator began operating in October 2025, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page