Solar installer

Ilum Energy Solutions

Name: Ilum Energy Solutions
Address: Sacramento, CA, 95834, US
Telephone: (888) 696-4586

Based at Sacramento, CA 95834. Installed solar on 753 homes since 2023 in California. Installing since 2019. Latest install on record: August 2026.

(888) 696-4586

Homes since 2023: 753
Median price: $4.19/W
Typical system: 7.2 kW
Leased or PPA: 0%

Price

Homes that bought their system from Ilum Energy Solutions paid a median $4.19/W installed, and the middle half paid $3.44/W–$5.48/W (355 systems since 2023, before incentives). That's $0.12 a watt above the California median of $4.07/W.

45% of its recent systems included a battery.

Where it installs

Counties with homes it installed since 2023, busiest first.

Kern County, CA · 122 Los Angeles County, CA · 94 San Luis Obispo County, CA · 71 Riverside County, CA · 64 San Bernardino County, CA · 54 Alameda County, CA · 51 Santa Barbara County, CA · 31 Tulare County, CA · 31 Orange County, CA · 30 Santa Clara County, CA · 28 Contra Costa County, CA · 24 San Joaquin County, CA · 13 Ventura County, CA · 13 Shasta County, CA · 12 Yolo County, CA · 11 Fresno County, CA · 10 Placer County, CA · 10 Kings County, CA · 8 Butte County, CA · 7 Madera County, CA · 7 San Mateo County, CA · 7 El Dorado County, CA · 6 Marin County, CA · 5 Solano County, CA · 5 Sonoma County, CA · 5 Lake County, CA · 4 Merced County, CA · 4 Napa County, CA · 4 Tehama County, CA · 4 Yuba County, CA · 4 Calaveras County, CA · 3 Monterey County, CA · 3 Sutter County, CA · 3 Tuolumne County, CA · 2 Mendocino County, CA · 1 Mono County, CA · 1 San Francisco County, CA · 1

By state

State	Homes	Median
California	753	$4.19/W

Homes installed since 2023.

Installed prices and installers from public installation records: Lawrence Berkeley National Laboratory’s Tracking the Sun (systems installed through 2025) and state program files from California, New York, New Jersey, Connecticut, Illinois and Oregon, which run into 2026. Prices are in dollars per watt of panel capacity (DC), before rebates and tax credits, for homes that bought their system; leased systems and systems with batteries are left out.