Acid BESS — Plant Summary
- EIA Plant ID
- 66659
- Capacity
- 97 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Fresno, CA
- Operating Since
- 2025
- Generators
- 1
- Operator
- Malaga BESS LLC
- Parent Company
- —
- Annual Generation
- -3,386 MWh
- Capacity Factor
- -0.5%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Acid BESS
OperatingBESS
Ranked #61 of 191 BESS plants in CA#344 of 837 nationally
97 MW BESS operating in Fresno, CA — California Independent System Operator
EIA
97 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
36.6905, -119.7404
County
Fresno, CA
Nearby Plants
- Malaga Power LLCNatural Gas121 MW · 0.0 km
- JD Foods - JD FoodsSolar1.5 MW · 1.4 km
- Rio Bravo FresnoWood Waste28 MW · 1.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Malaga BESS LLC | — | — |
| Owner(s) | Malaga BESS LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Acid BESS is a 97 MW battery energy storage system located in Fresno County, California. The facility, owned and operated by Malaga BESS LLC, commenced operations in 2025. It consists of a single generator utilizing batteries as its primary fuel source, classified as "MWH" in energy data systems. The battery system has a duration of 1 hour.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Acid BESS ranks as the 117th largest power plant in California out of 300, and 520th nationally out of 1205 facilities. The plant has been the subject of 10 news articles, with coverage focusing on industry trends, potential hazards, and regulatory matters.
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
Interconnection Queue1 projectBeta
HEKLA ENERGY STORAGE
WithdrawnBattery100.93 MWCAISO
Generation
−256 MWh
Net Charging
-3.4K MWh
Annual Net Energy
-0.5%
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_ZP26_GEN-APND
Node Source
Shared substation inference
MALAGA_1_CTG2Nearby ISO Node
POD_ULTPFR_1_UNIT 1 APNDSubstation
News & Articles (10)Beta
General
Europe Battery Energy Storage System (BESS) Market Report 2025 - 2030 [250 Pages & 120 Tables]
Europe Battery Energy Storage System (BESS) Market by Type (Lithium-ion Battery, Advanced Lead Acid Battery, Flow Battery, Sodium-ion Battery),...
MarketsandMarkets·3 months ago
General
Portable Power Station Market Size, Growth & Share, 2033
Global Portable Power Station Market Size, Share, Trends & Growth Forecast Report By Technology (Lithium-Ion and Sealed Lead Acid),...
Market Data Forecast·3 months ago
General
Province breaks ground on battery energy storage system in eastern Ontario dubbed Canada’s largest
Ontario Premier Doug Ford, flanked by his energy minister and leaders of the Algonquins of Pikwakanagan First Nation, broke ground Wednesday...
CTV News·4 months ago
General
Province breaks ground on battery energy storage system in eastern Ontario dubbed Canada’s largest
Ontario Premier Doug Ford, flanked by his energy minister and leaders of the Algonquins of Pikwakanagan First Nation, broke ground Wednesday...
CTV News·4 months ago
Last updated 2026-03-26
View all 10 articles