How big is Oberon II Solar Project?

Oberon II Solar Project is a hybrid solar and battery storage facility with 375 MW of EIA-reported total operating capacity and 500 MWh of reported storage energy capacity in Riverside County, California, registered as EIA Plant ID 65735. The broader Oberon Solar + Storage site was the first project to achieve operation through the streamlined Bureau of Land Management Desert Renewable Energy Conservation Plan. Its grid role is hybrid solar generation with co-located battery storage.

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Overview

Key fields

Generation / storage: 375 MW total / 500 MWh storage
Reported plant capacity and configuration.
Technology: Solar + battery storage
Primary generation technology.
Registry anchor: Plant 65735
Riverside County · CAISO
Storage duration: 4 hours
Battery subsystem rating.
Operating status: Operating
Oberon II Solar Project is operating.
Grid connection: SCE Red Bluff Substation
500 kV · Southern California Edison (SCE)

Profile

Grid role: Hybrid solar generation with co-located battery storage
Grid connection: SCE Red Bluff Substation · 500 kV · Southern California Edison (SCE).
Context: The broader Oberon Solar + Storage site was the first project to achieve operation through the streamlined Bureau of Land Management Desert Renewable Energy Conservation Plan. Oberon II is the site's EIA plant 65735 component.
Physical build: Oberon II Solar Project (EIA plant 65735) is an operational 375 MW solar-and-battery facility with two operating generating units. The shared Oberon build is documented with 679 MWp/500 MWac of solar, 250 MW/1 GWh of co-located storage, single-axis tracking PV arrays, a high-voltage substation, First Solar modules, Nextracker NX Horizon trackers, and Tesla battery technology. Exact plant-65735 installed counts for panels, PCS/inverters, battery units, and containers are not disclosed; combined Oberon sources do not allocate those counts specifically to Oberon II.

Structured profile

Reported capacity: 375 MW
Solar Photovoltaic, Batteries
Energy: 500 MWh
4-hour storage duration
Operating status: operating
Oberon II Solar Project is operating.
Interconnection: SCE Red Bluff Substation
500 kV · Southern California Edison (SCE)
Location

Units and generators

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

Generator	Capacity	Technology	Operation	Status
OBIIB	125 MW 125 MW summer	Batteries Electricity used for energy storage · BA	Sep 2023	Operating
OBIIP	250 MW 250 MW summer	Solar Photovoltaic Solar · PV	Oct 2023	Operating

Performance

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

Peer context

Technology capacity: 250 MW
National rank: #76
CA rank: #16

Monthly generation

Download CSV

Latest 12 months

600.3 GWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

18.0%

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

RED BLUFF

IN SERVICE · 500 kV

7.4 km

UNKNOWN300795

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

Offtake Agreement

Date not disclosed

Ava Community Energy contracted IP Oberon II Solar + Storage project from Intersect Power. CCA contract database identifies 125 MW solar plus 125 MW/500 MWh storage, online year 2024, 10-year PPA term. Ava's project page lists Oberon in Riverside County with Intersect Power, 125 MW solar, 125 MW/500 MWh storage, 10+-year term. No PPA price disclosed.

125 MW contracted10 yearsAva Community Energy · Intersect Power

CAC Item C5 Staff Report Item 12 TO: East Bay Community Energy Board of Directors FROM: Marie Fontenot, Vice President

Land and environmental record

Application Site Area

2021

Project application described approximately 5,000 acres of BLM land

Regional Water Board's CEQA certification described proposed facility as occupying 5,000 acres of BLM-managed land near Desert Center. The differing 4,700-, 5,000-, and 2,600-acre figures reflect different project-review and authorization descriptions rather than evidence of private parcel acquisition.

Source

Authorized Land Footprint

Jan 13, 2022

Approximately 2,600 acres of BLM-managed public land

BLM-approved project authorized on approximately 2,600 acres near Desert Center in eastern Riverside County. Approval authorized right-of-way for Oberon Solar, LLC to construct, operate, maintain, and decommission the photovoltaic facility.

BLM approves Oberon Solar Project | Bureau of Land Management

Environmental Impacts

Dec 1, 2021

Significant unavoidable impacts identified for aesthetics and cultural resources; other evaluated impacts addressed through design or mitigation

Regional Water Board's CEQA certification states aesthetics and cultural-resources impacts, including cumulative impacts, could not be fully mitigated and required Statement of Overriding Considerations. States other impacts were addressed through project design or incorporated mitigation measures.

Source

Proposed Site Area

Mar 18, 2021

Approximately 4,700 acres in proposed project boundary, with fewer than 3,000 acres developed with solar panels

California environmental-review description covered approximately 4,700 acres of BLM-administered land while stating fewer than 3,000 acres would be developed with solar panels. This is the proposed-review area, separate from the later 2,600-acre BLM authorization.

Source

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 / operatorOfftakerEquipmentFinancier

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Sep 2023
Sep 2023
Generator enters operationEIA-860
EIA-860 lists generator OBIIB with this operating date.
Oct 2023
Oct 2023
Generator enters operation

Reporting portfolio

EIA reporting entity

IP Oberon II, LLC

Entity 67582

Operating portfolio

6 plants

2 states

Reported capacity

2,378.8 MW

Batteries · Solar Photovoltaic

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Lumina Solar Project	486.6 MW	TX
Lumina II Solar Project	486.6 MW	TX
Oberon Solar Project	375 MW	CA
Oberon II Solar ProjectCurrent	375 MW	CA
Blythe Mesa Solar II	335.6 MW	CA
IP Radian, LLC	320 MW	TX

Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.

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Oberon II Solar Project

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Oberon II Solar Project

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Overview

Key fields

Profile

Structured profile

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

Parties and identifiers

Reporting portfolio

Sources

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Co-located assets

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