How big is Sunlight Storage?

Sunlight Storage has a reported capacity of 230 MW and an energy capacity of 920 MWh. Source: EIA Form 860.

What kind of plant is Sunlight Storage?

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

Where is Sunlight Storage located?

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

Who operates Sunlight Storage?

Sunlight Storage is operated by Sunlight Storage, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Sunlight Storage generate?

Sunlight Storage reported 260.4 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.

How does Sunlight Storage compare to other plants?

By capacity, Sunlight Storage ranks #35 of 962 operating plants of the same technology nationally. It ranks #9 of 248 in CA.

Sunlight Storage — 230 MW battery storage, CA

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Sunlight Storage — 230 MW battery storage, CA · Ask the Grid

Overview

Power / energy: 230 MW / 920 MWh
Reported plant capacity and configuration.
Technology: Batteries
Primary generation technology.
Registry anchor: Plant 65857
Sunlight Storage, LLC · Riverside County · CAISO
Storage duration: 4 hours
Battery subsystem rating.
Operating status: Operating
Sunlight Storage is operating.

Profile

Grid role: Battery storage for shifting Desert Sunlight solar generation to peak hours and supporting grid integration.

Structured profile

Reported capacity: 230 MW
Batteries
Energy: 920 MWh
4-hour storage duration
Operating status: operating
Sunlight Storage is operating.
Location: Riverside County
CAISO
Operator: Sunlight Storage, LLC

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Units and generators

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

Generator	Capacity	Technology	Operation	Status
SUNS1	230 MW 230 MW summer	Batteries Electricity used for energy storage · BA	Sep 2022	Operating

Performance

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

Peer context

Technology capacity: 230 MW; Batteries
National rank: #35; of 962 operating peers
CA rank: #9; of 248 operating peers

Monthly generation

Download CSV

Latest 12 months

260.4 GWh

Reported gross generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 net exchange

-45.2 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

UNKNOWN300795

IN SERVICE · 230 kV

4.6 km

EAGLE MT

Commercial, land, and environmental record

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

Financing

Tax Equity Financing Arrangement Contemplated

Date not disclosed

Acquisition documents expressly contemplated Sunlight Renewables Tax Equity Financing for Sunlight Storage Project Company through Equity Capital Contribution Agreement and related project-financing documents. Tax-equity investor, amount, and financing-close date not disclosed.

Sunlight Storage, LLC

Source

Transactions and agreements

Acquisition Agreement

Apr 2022

NextEra Energy Partners Acquisitions, LLC agreed to acquire approximately 67% Class A membership interests in Sunlight Renewables Holdings, which included Sunlight Storage Project Company (230 MW/920 MWh facility). Base purchase price $190.95 million subject to closing adjustments; not allocated solely to Sunlight Storage.

$191.0M230 MW contractedNextEra Energy Partners Acquisitions, LLC · NEP US SellCo, LLC · ESI Energy, LLC · Sunlight Storage, LLC

Source

Acquisition Closing

Sep 2022

Indirect subsidiary of NEP completed acquisition from NEER of interests representing 67% controlling ownership in 230 MW battery storage facility. No separate closing consideration allocated solely to Sunlight Storage disclosed.

230 MW contractedNEXTERA ENERGY PARTNERS ACQUISITIONS, LLC · NextEra Energy Resources, LLC · Sunlight Storage, LLC

nep-20230630

Land and environmental record

Environmental Authorization

2021

BLM construction authorization

In 2021, Sunlight Solar LLC received authorization from BLM to construct the Desert Sunlight Battery Energy Storage System within Desert Sunlight Solar facilities.

BLM announces Desert Sunlight battery storage facility is fully operational | Bureau of Land Management

Land Ownership

2022

94 acres of BLM-managed public land near Desert Center

230 MW Desert Sunlight Battery Energy Storage System located on 94 acres of Bureau of Land Management (BLM)-managed public lands near Desert Center in Riverside County, California.

BLM announces Desert Sunlight battery storage facility is fully operational | Bureau of Land Management

Land Use Plan Suitability

DRECP-suitable renewable-energy area

Battery system located in area analyzed and identified as suitable for renewable-energy development under Desert Renewable Energy Conservation Plan (DRECP) Land Use Plan Amendment, covering 10.8 million acres of public desert lands.

BLM announces Desert Sunlight battery storage facility is fully operational | Bureau of Land Management

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 / operatorProject companyFinancier

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Apr 20, 2022
Apr 20, 2022
Acquisition Agreementnep-20220331
NextEra Energy Partners Acquisitions, LLC entered into a purchase and sale agreement with NEP US SellCo, LLC and ESI Energy, LLC for approximately 67% of the Class A membership interests in Sunlight Renewables Holdings, which held the storage project company. The stated purchase price was approximately $191 million, subject to closing adjustments.
Aug 16, 2022
Aug 16, 2022

Sunlight Storage

Sunlight Storage

Overview

Profile

Structured profile

Related assets

Sunlight Storage II

Big Rock Solar Farm

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Financing

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

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Parties and identifiers

Reporting portfolio

Sources

Common questions about Sunlight Storage

How big is Sunlight Storage?

What kind of plant is Sunlight Storage?

Where is Sunlight Storage located?

Who operates Sunlight Storage?

How much electricity does Sunlight Storage generate?

How does Sunlight Storage compare to other plants?

Co-located assets