Crimson has a reported capacity of 350 MW. Source: EIA Form 860.

What kind of plant is Crimson?

Crimson is a batteries facility in Riverside County, CA, participating in the CAISO market.

Where is Crimson located?

Crimson is in Riverside County, CA, inside the CAISO balancing area.

Who operates Crimson?

Crimson is operated by RE Crimson LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Crimson generate?

Crimson reported 498.3 GWh over the twelve months to 2026-06. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.

Where does Crimson connect to the grid?

Crimson interconnects at Red Bluff Substation, on the Southern California Edison (SCE) system.

How does Crimson compare to other plants?

By capacity, Crimson ranks #7 of 962 operating plants of the same technology nationally. It ranks #5 of 248 in CA.

Crimson — 350 MW battery storage, Riverside County, CA

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Crimson — 350 MW battery storage, Riverside County, CA · Ask the Grid

Overview

Power / energy: 350 MW / 1,400 MWh
Reported plant capacity and configuration.
Technology: Batteries
Primary generation technology.
Registry anchor: Plant 65140
RE Crimson LLC · Riverside County · CAISO
Storage duration: 4 hours
Battery subsystem rating.
Operating status: Operating
Crimson is currently operating; a closure or retirement is listed for 2026.
Grid connection: Red Bluff Substation
220 kV · Southern California Edison (SCE)
Equipment: 3,000 containers
Installed equipment documented in public project records.
Commercial operation: October 18, 2022
Best-supported operating milestone.

Profile

Operating status: Crimson is currently operating; a closure or retirement is listed for 2026.
Grid role: Standalone battery storage providing flexible generation and grid-reliability services, operated in the California wholesale power market.
Grid connection: Red Bluff Substation · 220 kV · Southern California Edison (SCE).
Context: At its October 2022 operating announcement, Crimson was described as the world's largest battery storage project to reach operation in a single phase and the second-largest operating energy storage project. It was also the first standalone energy storage project approved for siting on Bureau of Land Management lands under the Biden-Harris Administration.

Structured profile

Reported capacity: 350 MW
Batteries
Energy: 1,400 MWh
4-hour storage duration
Commercial operation: October 18, 2022
Operating status: operating
Crimson is currently operating; a closure or retirement is listed for 2026.
Retirement: 2026
Crimson is currently operating; a closure or retirement is listed for 2026.

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Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
SWSH1	200 MW 200 MW summer	Batteries Electricity used for energy storage · BA	Oct 2022	Operating
SWSH2	150 MW 150 MW summer	Batteries Electricity used for energy storage · BA	Oct 2022	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 350 MW; Batteries
National rank: #7; of 962 operating peers
CA rank: #5; of 248 operating peers

Monthly generation

Download CSV

Latest 12 months

498.3 GWh

Reported gross generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 net exchange

-66 GWh

Generation less station charging

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Nearby substations

HIFLD infrastructure inventory

COLORADO RIVER

IN SERVICE · 500 kV

0.9 km

MIDPOINT

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Transactions and agreements

EPC Services Execution

Oct 18, 2022

CSI Energy Storage acted as turnkey system integrator and delivered EPC services for Crimson. The BESS was completed and operational by October 18, 2022. No EPC price or contract term was disclosed.

CSI Energy Storage

Axium Infrastructure and Canadian Solar’s Subsidiaries Recurrent Energy and CSI Energy Storage Announce Operation of World’s Largest Single Phase Energy Storage Project - Recurrent Energy

O&M Services Agreement

Oct 18, 2022

CSI Energy Storage provides long-term operational and maintenance services for Crimson. The project reached operational status by October 18, 2022. No O&M price or explicit duration was disclosed.

CSI Energy Storage

Axium Infrastructure and Canadian Solar’s Subsidiaries Recurrent Energy and CSI Energy Storage Announce Operation of World’s Largest Single Phase Energy Storage Project - Recurrent Energy

Land and environmental record

Federal Right-Of-Way And Environmental Review

May 3, 2021

BLM case file CACA 51967; NEPA number DOI-BLM-CA-D060-2017-0029-EIS; BLM right-of-way decision completed May 3, 2021.

The BLM Record of Decision authorized construction, operation, maintenance, and decommissioning of the Crimson Solar Project on federal lands. Scope: broader solar project approval, not battery-only.

Project Home Page

Land Use And Ownership

Oct 18, 2022

The project is sited on approximately 2,000 acres of BLM-managed public land, approximately 13 miles west of Blythe in Riverside County, California.

BLM official statement identifies the acreage and location for the completed Crimson battery storage system. Scope: battery-specific footprint, not broader solar project area.

BLM announces completion of Crimson Energy Storage Project | Bureau of Land Management

State Endangered-Species Permit Amendment (Phase 2-3 Reconfiguration)

Mar 27, 2026

CDFW Incidental Take Permit No. 2081(b)-2021-015-06-A5, Amendment No. 5, approved March 27, 2026; overall project impacts 1,984.1 acres of desert-tortoise and western-burrowing-owl habitat.

Amendment covers removal of BESS from Phase 2, increased acreage in Phase 3, updated phase acreage, and revised mitigation. Habitat-impact figures reflect broader solar project scope, not battery-only.

Crimson Solar Project (California Endangered Species Act Incidental Take Permit No. 2081(b)-2021-015-06-A5 Amendment No. 5 (ITP))

State Endangered-Species Permit Amendment (Transmission Addition)

Apr 14, 2026

CDFW Incidental Take Permit No. 2081-2021-015-06-A6, Amendment No. 6, approved April 14, 2026; increased authorized habitat take by 37 acres for total 2,021.0 acres overall project habitat impacts.

Amendment added generation-tie-line component. Habitat-impact figures reflect broader solar and transmission project scope, not battery-only.

Crimson Solar Project (California Endangered Species Act Incidental Take Permit No. 2081-2021-015-06-A6 Amendment No. 6 (ITP))

Water Quality Permit

Jul 20, 2021

Waste Discharge Requirements Order R7-2021-0035; WDID 7B333030001; Regulatory Measure ID 442459; Place ID 872687; permittee Sonoran West Solar Holdings, LLC; adopted July 20, 2021.

Colorado River Basin Regional Water Quality Control Board order specifically titles 'Crimson Solar Project Battery Energy Storage System.' Permittee is Sonoran West Solar Holdings, LLC (Recurrent Energy subsidiary).

Order R7-2021-0035 Crimson Solar Project- BESS

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

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AssetOwner / operatorOfftakerContractor

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

2015
2015
Development InitiatedSource
Recurrent Energy began developing Crimson Storage and its broader energy-storage pipeline.
May 2021
May 2021
BLM Approval

Crimson

Crimson

Overview

Profile

Structured profile

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Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

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Common questions about Crimson

How big is Crimson?

What kind of plant is Crimson?

Where is Crimson located?

Who operates Crimson?

How much electricity does Crimson generate?

Where does Crimson connect to the grid?

How does Crimson compare to other plants?

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