PanelCensus

Solarunion

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Solar installer based in California · active in 2 states · installer record #11701 resolved from 956 public installation records.

At a glance

Solarunion is a solar installer with 956 recorded installations totalling 5.3 MW, dated 2002 to 2025. Its records are concentrated in California (102%), where it ranks 275th of 6,220 profiled installers by volume and 449th of 10,536 nationally. The median installed price across 872 priced systems is $4.30/W before incentives.

Recorded installs
956
Total capacity
5.3 MW
DC nameplate
Median system
5.3 kW
≈ $24,778
Median price
$4.30/W
pre-incentive · 872 priced
Third-party owned
0%
lease / PPA
Battery attach
19%
First recorded
2002
Last recorded
2025

Track record

Install volume by year

2002
1$8.90/W
2014
1
2015
1
2016
1$3.85/W
2017
21$4.22/W
2018
83$4.43/W
2019
119$4.40/W
2020
120$4.42/W
2021
154$4.40/W
2022
191$4.46/W
2023
192$4.07/W
2024
75$4.26/W
2025
19$4.11/W

Bars: recorded installs · right column: this installer's median $/W that year.

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Dec 24, 2025Corte Madera, CA—$92,282Host-owned · battery
Dec 4, 2025Stockton, CA3.2 kW$12,448Host-owned
Oct 27, 2025San Francisco, CA—$74,218Host-owned · battery
Oct 21, 2025Berkeley, CA—$40,589Host-owned · battery
Sep 2, 2025El Cerrito, CA—$61,348Host-owned · battery
Jul 16, 2025Stockton, CA10.3 kW$33,210Host-owned
Jul 1, 2025Mission Viejo, CA7.7 kW$58,007Host-owned · battery
Jun 20, 2025Berkeley, CA8.8 kW$36,145Host-owned
Apr 15, 2025San Francisco, CA—$34,765Host-owned · battery
Apr 4, 2025Stockton, CA6.3 kW$24,943Host-owned

See all 956 installations →searchable & filterable; export to CSV with a free account

Service geography

California
974
Texas
5

Busiest cities

San Francisco, CA 331Oakland, CA 85Berkeley, CA 50San Jose, CA 20Stockton, CA 15Redwood City, CA 15San Mateo, CA 13San Rafael, CA 13

Record

Installer ID
PC-11701
First recorded install
Jul 11, 2002
Last recorded install
Dec 24, 2025
Priced records
872

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How does Solarunion compare with other installers in California?

By recorded installations Solarunion ranks 275th among the 6,220 installers based in California with five or more records. Its median price of $4.30/W is roughly in line with the California median of $4.26/W (the installer's median covers every state it works in). Its median system, 5.3 kW, is about 11% below the state median of 5.9 kW. under 1% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 19% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Fralick Homes (968), Levion Construction (965) and Occidental Power (960).

How has Solarunion's installation volume changed?

Solarunion's earliest dated installation on record is from 2002. It has recorded installations in 13 calendar years. The busiest year was 2023, with 192 installations. 2025, its latest year with records, has 19. Its median price per watt moved from $8.90/W in 2002 to $4.11/W in 2025. The most recent recorded installation is dated Dec 24, 2025.

Where does Solarunion install solar?

Recorded installations span 2 states: California (974, 102%) and Texas (5, under 1%). The cities with the most of its installations are San Francisco, CA (331), Oakland, CA (85), Berkeley, CA (50), San Jose, CA (20) and Stockton, CA (15).

Frequently asked questions

How many solar installations has Solarunion completed?

PanelCensus records 956 installations by Solarunion, from Jul 11, 2002 to Dec 24, 2025, totalling 5.3 MW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Solarunion charge for solar?

The median installed price across 872 priced systems is $4.30/W before incentives (median system 5.3 kW, about $24,778). The California median is $4.26/W.

Where does Solarunion install solar?

Recorded installs span 2 states, led by California (974) and Texas (5). Its busiest city is San Francisco, CA.

Is Solarunion still installing solar?

The most recent installation attributed to Solarunion in the public records is dated Dec 24, 2025; 2025 has 19 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.

Does Solarunion install leased or PPA solar systems?

2 recorded installations by Solarunion (under 1%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.

Does Solarunion install battery storage?

186 recorded installations by Solarunion (19%) include a battery.

Related installers and places

Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.

About this data

Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published September 21, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.

Cite as: PanelCensus, “Solarunion, solar installer (California)”, https://panelcensus.com/installers/california/solarunion-11701 (data as of September 21, 2026).