Graniterock Quarry

Power plant · Solar

Key facts

Power plant · Solar Operating

Net generation MWh by year, 2022 to 2025

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All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Gem	Unit ids G100000815907 Location id L100000813215 Eia plant ids 65485
Grid	Nerc region WECC Report year 2025 Grid voltage kv 60 Transmission owner Pacific Gas & Electric Co. Balancing authority code CISO Balancing authority name California Independent System Operator
Fuel burned (MMBtu), 2025	30,020
Capacity factor, 2025	0.228
Net generation (MWh), 2025	8,798
Balancing authority code	CISO

Source USPVDB

Source

USPVDBOpen license · retrieved Oct 25, 2026Map services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb

2 companies

Companies with an ownership or operating interest in this asset.
Company	Role	Share	As of	Source
CalCom Energy	Operator			EIA-860M
Granite Rock Company	Owner	100.0%	Dec 31, 2025	EIA-860

6 sources

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
GEMOpen license, with credit · retrieved Oct 26, 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
USPVDBOpen license · retrieved Oct 25, 2026Map services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory
EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Projects within 15 mi, nearest first.
Project	Kind	Away	MW
Crazy Horse Solar Project Postponed	Solar	5.3 mi	2
Renz Energy Storage Postponed	Storage	9.3 mi	20
Gilroy Data Center - Temp Crane Filed	Large load	9.4 mi
CA Moss Landing 3040 Hilltop Rd Postponed	Solar + storage	9.7 mi	2.2
AWS DATA CENTER GILROY - SFO069 Unknown	Large load	9.8 mi
Marina Landfill Gas Announced	Biomass	14.6 mi	6.4

Sources