PanelCensus

Willdan Group

Recently active

Solar installer based in California · installer record #71226 resolved from 10 public installation records.

At a glance

Willdan Group is a solar installer with 10 recorded installations totalling 1.5 MW, dated 2024 to 2025. All of its records are in California, where it ranks 4507th of 6,220 profiled installers by volume and 7,578th of 10,536 nationally. The median installed price across 10 priced systems is $6.01/W before incentives.

Recorded installs
10
Total capacity
1.5 MW
DC nameplate
Median system
151.1 kW
≈ $891,554
Median price
$6.01/W
pre-incentive · 10 priced
Third-party owned
0%
lease / PPA
Battery attach
0%
First recorded
2024
Last recorded
2025

Track record

Install volume by year

2024
9$6.03/W
2025
1$6.00/W

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

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Feb 7, 2025Escondido, CA170.5 kW$1,023,423Host-owned
Nov 11, 2024Escondido, CA151.1 kW$853,899Host-owned
Nov 8, 2024Escondido, CA120.7 kW$872,700Host-owned
Sep 26, 2024Escondido, CA198 kW$1,469,209Host-owned
Aug 12, 2024Escondido, CA151.1 kW$910,407Host-owned
Jul 12, 2024Escondido, CA151.1 kW$973,194Host-owned
Jun 10, 2024Escondido, CA151.1 kW$853,899Host-owned
Jun 7, 2024Escondido, CA151.1 kW$1,105,046Host-owned
Jun 7, 2024Escondido, CA151.1 kW$841,342Host-owned
Mar 15, 2024Escondido, CA151.1 kW$841,342Host-owned

Service geography

California
10

Busiest cities

Escondido, CA 10

Record

Installer ID
PC-71226
First recorded install
Mar 15, 2024
Last recorded install
Feb 7, 2025
Priced records
10

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How does Willdan Group compare with other installers in California?

By recorded installations Willdan Group ranks 4507th among the 6,220 installers based in California with five or more records. Its median price of $6.01/W is about 41% above the California median of $4.26/W. Its median system, 151.1 kW, is about 26 times 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. 0% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Rw Electric (10), Tesoro Homebuilders (10) and Smith Development And Construction Company (10).

How has Willdan Group's installation volume changed?

Willdan Group's earliest dated installation on record is from 2024. It has recorded installations in 2 calendar years. The busiest year was 2024, with 9 installations. 2025, its latest year with records, has 1. Its median price per watt moved from $6.03/W in 2024 to $6.00/W in 2025. The most recent recorded installation is dated Feb 7, 2025.

Where does Willdan Group install solar?

All recorded installations are in California. The cities with the most of its installations are Escondido, CA (10).

Frequently asked questions

How many solar installations has Willdan Group completed?

PanelCensus records 10 installations by Willdan Group, from Mar 15, 2024 to Feb 7, 2025, totalling 1.5 MW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Willdan Group charge for solar?

The median installed price across 10 priced systems is $6.01/W before incentives (median system 151.1 kW, about $891,554). The California median is $4.26/W.

Where does Willdan Group install solar?

All 10 recorded installations are in California, the most of them in Escondido.

Is Willdan Group still installing solar?

The most recent installation attributed to Willdan Group in the public records is dated Feb 7, 2025; 2025 has 1 recorded installation. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.

Does Willdan Group install leased or PPA solar systems?

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

Does Willdan Group install battery storage?

0 recorded installations by Willdan Group (0%) 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, “Willdan Group, solar installer (California)”, https://panelcensus.com/installers/california/willdan-group-71226 (data as of September 21, 2026).