Crimson reports 350 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

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 490.9 GWh over the twelve months to 2026-07. 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 #11 of 1,061 operating plants of the same technology nationally. It ranks #5 of 272 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

Generation and physical site

EIA plant 65140 · Inventory for Sep 2026.

Reported operating nameplate by technology

Battery storage: 350 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (2)

EIA generator status and nameplate capacity for Crimson
Generator	Technology	Status	Power (MW)	Energy (MWh)
SWSH1	Batteries	Operating	200	800
SWSH2	Batteries	Operating	150	600

Physical map location · OpenStreetMap: 33.57288, -114.81772
Filed location · EIA: 33.57345, -114.81450

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Jun 22, 2026
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

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

Generator	Capacity	Technology	Operation	Status
SWSH1	200 MW 200 MW summer	Batteries BA	Oct 2022	Operating
SWSH2	150 MW 150 MW summer	Batteries BA	Oct 2022	Operating

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

Mapped facility footprint

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Overview

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Infrastructure record

Profile

Structured profile

Generation and physical site

Reported operating nameplate by technology

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Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Sources

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?

Co-located assets

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