Pima Energy Storage System
Battery storage project in Pima County, Arizona. 10 MW of nameplate capacity across 1 generator, operated by Pima Energy Storage System.
Also known as EIA plant 61197
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 10 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- January 2017First generator online
- Operator
- Pima Energy Storage SystemEIA operator ID 60834
- Grid
- TEPCBalancing authority TEPC
- Price nodes
- None linkedNo verified ISO node
- Location
- Pima County, AZ32.2516, −110.9913
- EIA plant ID
- 61197EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Pima Energy Storage System produces
Free · EIA-923Net generation, 2025
−584 MWh
−584 MWh, final
Battery discharge, 2025
89 MWh
Charge 673 MWh
January to July 2026
−285 MWh
Provisional
Range, 2017 to 2025
−584.0–−253.0
MWh a year. Low 2025, high 2020
| 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 | −489 | Not reported | 12 of 12 |
| 2018 | −514 | Not reported | 12 of 12 |
| 2019 | −367 | Not reported | 12 of 12 |
| 2020 | −253 | Not reported | 12 of 12 |
| 2021 | −536 | Not reported | 12 of 12 |
| 2022 | −483 | Not reported | 12 of 12 |
| 2023 | −341 | Not reported | 12 of 12 |
| 2024 | −256 | Not reported | 12 of 12 |
| 2025 | −584 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −285 | 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 |
|---|---|---|---|
| PIMA | Batteries | 10.0 | January 2017 |
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 Pima Energy Storage System 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 Pima Energy Storage System and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Pima Energy Storage System
Questions about Pima Energy Storage System
How much power does Pima Energy Storage System produce?
Pima Energy Storage System reported −584 MWh (−584 MWh) of net generation in 2025. From January to July 2026 it reported −285 MWh, which is provisional.
Where is Pima Energy Storage System?
Pima Energy Storage System is in Pima County, Arizona, at 32.2516, −110.9913. It is in the Tucson Electric Power Company balancing area (TEPC).
Who operates Pima Energy Storage System?
EIA-860M for August 2026 lists Pima Energy Storage System as the operator (EIA operator ID 60834). The operator is not always the owner.
When did Pima Energy Storage System start operating?
Its first generator began operating in January 2017, 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