Sanborn BESS 3 — Plant Summary
- EIA Plant ID
- 65672
- Capacity
- 169 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Kern, CA
- Operating Since
- 2023
- Generators
- 1
- Operator
- Terra-Gen Operating Co-BESS
- Parent Company
- —
- Annual Generation
- -32,930 MWh
- Capacity Factor
- -2.2%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Sanborn BESS 3
OperatingBESS
Ranked #33 of 191 BESS plants in CA#222 of 837 nationally
169 MW BESS operating in Kern, CA — California Independent System Operator
EIA
169 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2023
Operating Since
Location
Coordinates
35.0270, -118.1395
County
Kern, CA
Nearby Plants
- Sanborn BESS 1BESS100 MW · 0.0 km
- Sanborn BESS 2BESS100 MW · 0.1 km
- Edwards Sanborn S1BESS84.6 MW · 0.6 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-BESS | — | — |
| Owner(s) | EdSan 1B Group 3, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Sanborn BESS 3 is a battery energy storage system located in Kern County, California. The plant has a total capacity of 169 MW and utilizes batteries as its primary fuel source, specifically lithium-ion batteries (LIB). It consists of a single generator and has a total storage capacity of 676 MWh, providing a duration of 4 hours at full output. The facility began operating in 2023 and is owned and operated by Terra-Gen Operating Co-BESS.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Sanborn BESS 3 ranks as the 77th largest power plant in California out of 112, and nationally it ranks 358th out of 514.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
−2.6K MWh
Net Charging
-32.9K MWh
Annual Net Energy
-2.2%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
MEDIUM confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
PHSP15Nearby ISO Node
PHSP15Substation
News & Articles (10)Beta
Industry·technology
Megablock and Haohan accelerate global battery storage buildout - CHOSUNBIZ
Tesla in the United States unveiled Megablock, a large battery energy storage system (BESS), on Sept. 8 (local time).
Megablock (other)Tesla (other)
Chosunbiz·3 months ago
Grid·outage
How mega batteries are unlocking an energy revolution
As the evening drew in on a sweltering mid-August day in 2020, California's strained electricity grid buckled. Amid an intense heatwave,...
Financial Times·5 months ago
Industry
Top 5: Largest BESS Projects in the World in 2025
Here's a list of the top 5 largest BESS projects in the world based on their rated power as of now. #1 Edwards & Sanborn Rated Power: 821 MW
Saur Energy·11 months ago
Regulatory·state puc
California utility PG&E seeks regulatory approval of 575MW+ hybrid battery storage procurement
California Investor-owned utility (IOU) PG&E is seeking approval for hybrid resources with over 575MW of battery storage output.
PG&E (other)
Energy-Storage.News·1 years ago
Last updated 2026-03-14
View all 10 articles