Chestnut has a reported capacity of 285.6 MW. Source: EIA Form 860.

What kind of plant is Chestnut?

Chestnut is a Batteries, Solar Photovoltaic facility in Kings County, CA, participating in the CAISO market.

Where is Chestnut located?

Chestnut is in Kings County, CA, inside the CAISO balancing area.

Who operates Chestnut?

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

How much electricity does Chestnut generate?

Chestnut reported 379.4 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

Where does Chestnut connect to the grid?

Chestnut interconnects at Gates Substation, on the Pacific Gas and Electric Company (PG&E) system.

How does Chestnut compare to other plants?

By capacity, Chestnut ranks #264 of 7,234 operating plants of the same technology nationally. It ranks #48 of 939 in CA.

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Batteries, Solar PhotovoltaicCAISO · Kings County

Chestnut

Kings County · CAISO

Chestnut is a hybrid solar and battery storage facility with 285.6 MW of EIA-reported operating capacity in Kings County, California, registered as EIA Plant ID 63849. Project filings list 563,640 solar panels and 60 inverters for the facility.

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Overview

Key fields

Reported capacity: 285.6 MW
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Technology: Solar + battery storage
Primary generation technology.
Registry anchor: Plant 63849
Kings County · CAISO
Operating status: Operating

Asset analyst

plant:plant-63849

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Investigate technology, capacity, output, price behavior, ownership, and related facilities using this profile plus current grid data.

Units and generators

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

Generator	Capacity	Technology	Operation	Status
BESS1	135 MW 135 MW summer	Batteries Electricity used for energy storage · BA	Dec 2023	Operating
CHNUT	150.6 MW 150.6 MW summer	Solar Photovoltaic Solar · PV	Dec 2023	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.

Land and environmental record

Air Emissions And Cooling

Aug 15, 2019

No project-specific air permit, combustion-control system, or cooling-water system identified in gathered records.

CEQA record lists air quality and greenhouse-gas emissions as reviewed issues. However, gathered exact-asset records do not identify combustion equipment, air-permit number, emissions controls, or cooling-water source. Consistent with photovoltaic solar-only project.

Chestnut Solar Project

Construction Water Demand And Source

2020

208 acre-feet total for 12-month construction period (0.2 acre-feet per acre × 1,040 acres). Supply from on-site agricultural well or nearby active agricultural well.

Kings County water-supply assessment estimates 208 acre-feet for construction dust control over planned 12-month period. Supply source: existing on-site agricultural well or another active well nearby.

Source

Land Ownership History

Mar 20, 2023

Public and private ownership sequence: Westlands Water District (December 2002 to May 27, 2022), Chestnut Westside, LLC (May 27, 2022 to March 20, 2023), Castanea Project, LLC (March 20, 2023 onward)

Westlands Water District acquired site December 2002. Grant Deed to Chestnut Westside, LLC recorded May 27, 2022 (Kings County Doc. 2210286). Grant Deed to Castanea Project, LLC recorded March 20, 2023 (Kings County Doc. 2304227).

Castanea Project LLC Williamson Act re-enrollment

Land Use And Zoning

Aug 15, 2019

Present land use: Agriculture. Zoning: AG-40. General Plan: General Agriculture-40, Exclusive Agriculture-40. Location: near 25th Avenue and Madison Avenue, Kings County.

Kings County CEQA record identifies site as agricultural land with AG-40 zoning and General Agriculture-40/Exclusive Agriculture-40 general-plan designations near 25th and Madison Avenues.

Chestnut Solar Project

Operational Water Demand And Supply

2025

Approximately 20 acre-feet per year operational demand; up to 33 acre-feet per year Westlands Water District supply capacity (5 acre-feet per 160 acres).

Water-supply assessment: 20 acre-feet/year operational demand (panel washing, septic, equipment) vs. 33 acre-feet/year district supply. If surface water unavailable, groundwater pumped and trucked for panel washing.

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Monthly generation

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Nearby substations

Commercial, land, and environmental record

Land and environmental record

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Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Sources

Common questions about Chestnut

How big is Chestnut?

What kind of plant is Chestnut?

Where is Chestnut located?

Who operates Chestnut?

How much electricity does Chestnut generate?

Where does Chestnut connect to the grid?

How does Chestnut compare to other plants?

Co-located assets

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