How big is Silver State South Storage?

Silver State South Storage has a reported capacity of 200 MW and an energy capacity of 800 MWh. Source: EIA Form 860.

What kind of plant is Silver State South Storage?

Silver State South Storage is a batteries facility in Clark County, NV, participating in the CAISO market.

Where is Silver State South Storage located?

Silver State South Storage is in Clark County, NV, inside the CAISO balancing area.

Who operates Silver State South Storage?

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

How much electricity does Silver State South Storage generate?

Silver State South Storage reported 281.3 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 Silver State South Storage connect to the grid?

Silver State South Storage interconnects at Primm 220 kV Substation, on the Southern California Edison Company (SCE) system.

How does Silver State South Storage compare to other plants?

By capacity, Silver State South Storage ranks #48 of 962 operating plants of the same technology nationally. It ranks #4 of 14 in NV.

Silver State South Storage — 200 MW battery storage, NV

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Silver State South Storage — 200 MW battery storage, NV · Ask the Grid

Overview

Power / energy: 200 MW / 800 MWh
Reported plant capacity and configuration.
Technology: Batteries
Primary generation technology.
Registry anchor: Plant 67734
Silver State South Storage, LLC · Clark County · CAISO
Storage duration: 4 hours
Battery subsystem rating.
Operating status: Operating
Silver State South Storage is operating.
Grid connection: Primm 220 kV Substation
220 kV · Southern California Edison Company (SCE)

Profile

Grid role: Four-hour lithium-ion battery energy-storage resource contracted for SCE mid-term reliability procurement.
Grid connection: Primm 220 kV Substation · 220 kV · Southern California Edison Company (SCE).
Physical build: Silver State South Storage is a 200 MW, four-hour, transmission-connected lithium-ion battery energy-storage resource in Jean/Clark County, Nevada. It is being developed by NextEra Energy Resources and interconnects at the Primm 220 kV Substation while sharing a point of interconnection with a solar resource. The EIA-linked plant record identifies one 200 MW generating unit; no exact-asset counts for batteries, containers, PCS/inverters, or other equipment were identified.

Structured profile

Reported capacity: 200 MW
Batteries
Energy: 800 MWh
4-hour storage duration
Operating status: operating
Silver State South Storage is operating.
Interconnection: Primm 220 kV Substation
220 kV · Southern California Edison Company (SCE)
Location: Clark County
CAISO

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Units and generators

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

Generator	Capacity	Technology	Operation	Status
SSSB	200 MW 200 MW summer	Batteries Electricity used for energy storage · BA	Apr 2025	Operating

Performance

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

Peer context

Technology capacity: 200 MW; Batteries
National rank: #48; of 962 operating peers
NV rank: #4; of 14 operating peers

Monthly generation

Download CSV

Latest 12 months

281.3 GWh

Reported gross generation

Latest report

Jun 2026

EIA-923 monthly filing

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

UNKNOWN302161

IN SERVICE

0.1 km

PRIMM

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

Offtake Agreement Amended, Restated, And Approved

Jul 11, 2024

California Public Utilities Commission Resolution E-5334 approved SCE's amended and restated Mid-Term Reliability contract for the exact Silver State South Storage project on July 11, 2024. The contract covers 200 MW nameplate capacity with delivery June 1, 2025 through May 30, 2040 (15-year term). The project is identified as a 4-hour lithium-ion battery resource in Jean, Nevada; MTR compliance ELCC value is 181 MW. Contract costs confidential.

200 MW contracted15 yearsSouthern California Edison Company · Silver State South Storage, LLC

Source

Transactions and agreements

Offtake Agreement Executed

Dec 20, 2022

Southern California Edison originally executed an RA-with-Put-Option contract for Silver State South Storage with expected initial delivery June 1, 2024. No original-contract price, term, or contracted MW were disclosed in the cited record. This contract was later amended and restated.

Southern California Edison Company · Silver State South Storage, LLC

Source

Land and environmental record

Battery Project Site Area

May 1, 2024

42.06 acres of federally managed land

Nevada PUC project description covers expansion of existing 230 kV substation, up-to-250 MW BESS, 230 kV buswork tie, and associated facilities on approximately 42.06 acres of federally managed land in Clark County.

Agenda Query

Federal Land Authorization

May 10, 2023

BLM NEPA number DOI-BLM-NV-S010-2023-0043-DNA; BLM case N-101595; existing ROW N-85801

BLM states Silver State South Storage, LLC applied to construct, operate, maintain, and decommission the BESS within the fenced facility right-of-way of related Silver State Solar Power South (ROW N-85801). BLM application case N-101595; NEPA review completed with decision date May 10, 2023.

Project Home Page

Related Solar Land Area

Dec 28, 2022

Related solar facility: 250 MW photovoltaic on 2,862 BLM acres

BLM's operating-project list identifies the separate Silver State South Solar facility as a 250 MW photovoltaic project on 2,862 BLM acres under serial NVN 085801. This acreage belongs to the related solar facility, not the battery-only footprint.

Source

State Environmental Permit Docket

May 1, 2024

Nevada PUC UEPA docket 21-09028

Silver State South Solar Battery Energy Storage Project reviewed under Nevada's Utility Environmental Protection Act in docket 21-09028. Application covered up-to-250 MW BESS and associated substation and transmission facilities; retrieved agenda describes possible action but does not provide separate final permit identifier.

Agenda Query

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

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetOwner / operatorContractorOfftaker

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

May 27, 2014
May 27, 2014
Related solar-project acquisition and saleNextEra Ene...
First Solar completed the sale of the 250 MW AC Silver State South Solar Project to a subsidiary of NextEra Energy Resources. Transaction terms were not disclosed; the cited release does not identify a separate sale of the storage facility.
Dec 20, 2022

Silver State South Storage

Silver State South Storage

Overview

Profile

Structured profile

Related assets

Silver Peak

Condor Energy Storage LLC

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

Sunlight Storage

Sunlight Storage II

Big Rock Solar Farm

Cathode (Hinson) BESS

Parties and identifiers

Reporting portfolio

Sources

Common questions about Silver State South Storage

How big is Silver State South Storage?

What kind of plant is Silver State South Storage?

Where is Silver State South Storage located?

Who operates Silver State South Storage?

How much electricity does Silver State South Storage generate?

Where does Silver State South Storage connect to the grid?

How does Silver State South Storage compare to other plants?

Co-located assets