PanelCensus

Willer Construction

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Solar installer based in California · installer record #70794 resolved from 232 public installation records.

At a glance

Willer Construction is a solar installer with 232 recorded installations totalling 844 kW, dated 2018 to 2025. All of its records are in California, where it ranks 843rd of 6,220 profiled installers by volume and 1,345th of 10,536 nationally. The median installed price across 118 priced systems is $2.48/W before incentives.

Recorded installs
232
Total capacity
844 kW
DC nameplate
Median system
3.6 kW
≈ $6,000
Median price
$2.48/W
pre-incentive
Third-party owned
0%
lease / PPA
Battery attach
0%
First recorded
2018
Last recorded
2025

Track record

Install volume by year

2018
29$2.48/W
2019
24$2.48/W
2020
10$2.48/W
2021
40$2.46/W
2022
88$2.02/W
2023
22$3.14/W
2024
12$0.98/W
2025
7

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

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Jul 29, 2025Bakersfield, CA6.1 kW$0Host-owned
Jul 17, 2025Bakersfield, CA6 kW$0Host-owned
Jul 17, 2025Bakersfield, CA6.1 kW$0Host-owned
Apr 30, 2025Bakersfield, CA6.1 kW$0Host-owned
Apr 18, 2025Bakersfield, CA6.1 kW$0Host-owned
Apr 11, 2025Bakersfield, CA6.1 kW$0Host-owned
Mar 14, 2025Bakersfield, CA8.4 kW$0Host-owned
Nov 21, 2024Bakersfield, CA5.8 kW$0Host-owned
Sep 24, 2024Bakersfield, CA3.6 kW$0Host-owned
Sep 3, 2024Bakersfield, CA6.4 kW$0Host-owned

See all 232 installations →searchable & filterable; export to CSV with a free account

Service geography

California
232

Busiest cities

Bakersfield, CA 231Shafter, CA 1

Record

Installer ID
PC-70794
First recorded install
Apr 13, 2018
Last recorded install
Jul 29, 2025
Priced records
118

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How does Willer Construction compare with other installers in California?

By recorded installations Willer Construction ranks 843rd among the 6,220 installers based in California with five or more records. Its median price of $2.48/W is about 42% below the California median of $4.26/W. Its median system, 3.6 kW, is about 39% below the state median of 5.9 kW. 0% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. under 1% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include BUCKLEY'S HEAT & AIR INC (233), Eco Planet Builders (232) and Solarsesame (232).

How has Willer Construction's installation volume changed?

Willer Construction's earliest dated installation on record is from 2018. It has recorded installations in 8 calendar years. The busiest year was 2022, with 88 installations. 2025, its latest year with records, has 7. Its median price per watt moved from $2.48/W in 2018 to $0.98/W in 2024. The most recent recorded installation is dated Jul 29, 2025.

Where does Willer Construction install solar?

All recorded installations are in California. The cities with the most of its installations are Bakersfield, CA (231) and Shafter, CA (1).

Frequently asked questions

How many solar installations has Willer Construction completed?

PanelCensus records 232 installations by Willer Construction, from Apr 13, 2018 to Jul 29, 2025, totalling 844 kW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Willer Construction charge for solar?

The median installed price across 118 priced systems is $2.48/W before incentives (median system 3.6 kW, about $6,000). The California median is $4.26/W.

Where does Willer Construction install solar?

All 232 recorded installations are in California, the most of them in Bakersfield.

Is Willer Construction still installing solar?

The most recent installation attributed to Willer Construction in the public records is dated Jul 29, 2025; 2025 has 7 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.

Does Willer Construction install leased or PPA solar systems?

0 recorded installations by Willer Construction (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.

Does Willer Construction install battery storage?

1 recorded installation by Willer Construction (under 1%) includes 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, “Willer Construction, solar installer (California)”, https://panelcensus.com/installers/california/willer-construction-70794 (data as of September 21, 2026).