Sierra Energy Storage, LLC — Plant Summary
- EIA Plant ID
- 61803
- Capacity
- 10 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Testing
- Location
- Tuolumne, CA
- Operating Since
- —
- Generators
- 1
- Operator
- Engie North America
- Parent Company
- —
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Sierra Energy Storage, LLC
TestingBESS
Ranked #135 of 191 BESS plants in CA#572 of 837 nationally
10 MW BESS testing in Tuolumne, CA — California Independent System Operator
EIA
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
—
Operating Since
Location
Coordinates
37.8744, -120.4774
County
Tuolumne, CA
Nearby Plants
- Sierra Pacific Chinese CampSolar3.6 MW · 2.3 km
- Sonora 1Solar1.5 MW · 4.8 km
- New MelonesHydro300 MW · 9.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Engie North America | — | — |
| Owner(s) | Enel Green Power NA, Inc., Pacific Ultrapower Chinese Station | — | — |
| Status | Testing | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Sierra Energy Storage, LLC, is a 10 MW battery energy storage system located in Tuolumne County, California. The plant, identified by the EIA plant code 61803, is operated by Engie North America. It consists of a single generator utilizing batteries as its energy source (MWH).
The facility is located within the California Independent System Operator (CAISO) balancing authority area and the Western Electricity Coordinating Council (WECC) NERC region. Based on total capacity, Sierra Energy Storage ranks as the 208th largest power plant in California out of 300, and 777th nationally out of 1205.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
CHSTN_7_B1
Pricing Hub
TH_NP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
News & Articles (10)Beta
Industry·corporate
City Wants Neighbors’ Input on What Its First Battery Storage Facility Will Look Like Before Pasadena breaks ground on the largest clean-energy project in the city’s history, it wants to know what the neighbors think about the landscaping around it. ---> https://p
Pasadena (other)
Facebook·4 weeks ago
Grid·outage
Transformer issue causes brief mass power outage Friday in Tuolumne, Calaveras counties
Outages that temporarily knocked out power Friday for about 34000 Pacific Gas and Electric Co. customers were linked to an incident at a...
Pacific Gas and Electric Co. (operator)
The Union Democrat·2 months ago
Industry·corporate
Project Matador: Massive AI Data Center in Texas Panhandle Promises Pollution
It's true we do things bigger in Texas. But bigger doesn't always mean better. Learn more about Project Matador, also known as the President...
Sierra Club·3 months ago
Industry·technology
SNR Debuts HFC ZE Switcher
Now in service at Class II Sierra Northern Railway (SNR) is the first of four HFC (hydrogen fuel cell)-powered, ZE (zero-emission) four-axle...
Sierra Northern Railway (operator)SNR (operator)
Railway Age·6 months ago
Last updated 2026-03-14
View all 10 articles