Westmont 400A

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Power plant · Solar

Key facts

Power plant · Solar Operating

Capacity: Capacity: sourceEIA-860M · 30 Oct 2026Open licenseMW

Commissioned: 2017
Net generation, 2025: 3,495 MWh
Grid: 34 kV to Los Angeles Department of Water & Power (LDWP)
Location: Los Angeles County, California
Operated by: Altus Power America Management, LLC

Output

Net generation MWh by year, 2017 to 2025

Operations detail

Details

Who’s behind it

Owner: Westmont Solar II

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Technology: Solar source: “Solar Photovoltaic”
Age: 9 years since 2017

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

Attributes
Attribute	Value
Gem	Unit ids G100000818601 Location id L100000815717 Eia plant ids 61348
Grid	Nerc region WECC Report year 2025 Grid voltage kv 34.50 Transmission owner Los Angeles Department of Water & Power Balancing authority code LDWP Balancing authority name Los Angeles Department of Water and Power
Fuel burned (MMBtu), 2025	11,925
Capacity factor, 2025	0.173
Net generation (MWh), 2025	3,495
Balancing authority code	LDWP

Solar arrays

Array area (acres): 5.1
AC capacity (MW): 2.3
DC capacity (MW): 2.4
Mounting: Fixed tilt
Site type: Greenfield
Began operating: 2017

Source USPVDB

Source

U.S. Large-Scale Solar Photovoltaic DatabaseOpen license · retrieved 25 Oct 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

Attribution

Ownership

2 companies

Companies with an ownership or operating interest in this asset.
Company	Role	Share	As of	Source
Altus Power America Management, LLC	Operator			EIA-860M
Westmont Solar II	Owner	100.0%	31 Dec 2025	EIA-860

Timeline

2017 In service · EIA-860M

Sources

6 sources

Sources EIA-860M · GEM · USPVDB · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Sources

EIA-860M Preliminary Monthly Electric Generator InventoryOpen license · retrieved 4 Nov 2026
Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Open license, with credit · retrieved 26 Oct 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.
U.S. Large-Scale Solar Photovoltaic Database (USPVDB) — USGS and LBNL; one row per facility with its array footprintOpen license · retrieved 25 Oct 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
EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Open license · retrieved 1 Nov 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

Every source and license · Attribution

View at source

Around this plant

Nearby

Projects within 25 km, nearest first.
Project	Kind	Away	MW
San Pedro Public Market (SPPM) Under construction	Solar	3.8 km	1.2
Elevate Pier S Filed	Storage	6.0 km	70
Watson Cogeneration Withdrawn	Gas, combined cycle	7.1 km	94.2
Torrance Dis Ctr 2 - SLLAX100 Under construction	Solar	9.4 km	1.4
Dominguez - SLLAX512 Under construction	Solar	10.1 km	1.3
South Bay Dis Ctr 12 - SLLAX104 Under construction	Solar	10.6 km	1.2
South Bay Dis Ctr 6-SLLAX680 Under construction	Solar	10.7 km	1.3
Fordyce - SLLAX680 Under construction	Solar	10.7 km	1.3
Scattergood Postponed	Gas, combined cycle	21.4 km	346
Cobalt Under construction	Solar + storage	23.8 km	250

Sources EIA-860M · CAISO

Sources

EIA-860M Preliminary Monthly Electric Generator InventoryOpen license · retrieved 4 Nov 2026
CAISO Public Queue ReportOpen license, with credit · retrieved 11 Nov 2026Source: California ISO

Attribution