PanelCensus

Castle Construction

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Solar installer based in California · installer record #2435 resolved from 7 public installation records.

At a glance

Castle Construction is a solar installer with 7 recorded installations totalling 54 kW, dated 2017 to 2021. All of its records are in California, where it ranks 5004th of 6,220 profiled installers by volume and 8,447th of 10,536 nationally.

Recorded installs
7
Total capacity
54 kW
DC nameplate
Median system
6.9 kW
≈ $19,000
Median price
$2.78/W
pre-incentive
Third-party owned
0%
lease / PPA
Battery attach
0%
First recorded
2017
Last recorded
2021

Track record

Install volume by year

2017
1$1.11/W
2019
3$3.00/W
2020
2$3.14/W
2021
1$2.74/W

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

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Jul 13, 2021Paso Robles, CA6.9 kW$19,000Host-owned
Mar 20, 2020San Miguel, CA11.9 kW$33,000Host-owned
Jan 2, 2020Paso Robles, CA4.6 kW$16,200Host-owned
Sep 6, 2019Paso Robles, CA5.3 kW$25,000Host-owned
Aug 6, 2019Paso Robles, CA5.4 kW$16,200Host-owned
Mar 21, 2019San Luis Obispo, CA12.2 kW$33,000Host-owned
Nov 20, 2017Paso Robles, CA7.7 kW$8,500Host-owned

Service geography

California
7

Busiest cities

Paso Robles, CA 5San Luis Obispo, CA 1San Miguel, CA 1

Record

Installer ID
PC-2435
First recorded install
Nov 20, 2017
Last recorded install
Jul 13, 2021
Priced records
7

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How does Castle Construction compare with other installers in California?

By recorded installations Castle Construction ranks 5004th among the 6,220 installers based in California with five or more records. Its median system, 6.9 kW, is about 17% above 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 Baywa Re Solar Projects (7), Bes Solar (7) and Castaneda Construction (7).

How has Castle Construction's installation volume changed?

Castle Construction's earliest dated installation on record is from 2017. It has recorded installations in 4 calendar years. The busiest year was 2019, with 3 installations. 2021, its latest year with records, has 1. Its median price per watt moved from $1.11/W in 2017 to $2.74/W in 2021. The most recent recorded installation is dated Jul 13, 2021. No installation in the public records is dated within the last three years.

Where does Castle Construction install solar?

All recorded installations are in California. The cities with the most of its installations are Paso Robles, CA (5), San Luis Obispo, CA (1) and San Miguel, CA (1).

Frequently asked questions

How many solar installations has Castle Construction completed?

PanelCensus records 7 installations by Castle Construction, from Nov 20, 2017 to Jul 13, 2021, totalling 54 kW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Castle Construction charge for solar?

The median installed price across 7 priced systems is $2.78/W before incentives (median system 6.9 kW, about $19,000). The California median is $4.26/W.

Where does Castle Construction install solar?

All 7 recorded installations are in California, the most of them in Paso Robles.

Is Castle Construction still installing solar?

The most recent installation attributed to Castle Construction in the public records is dated Jul 13, 2021; 2021 has 1 recorded installation. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.

Does Castle Construction install leased or PPA solar systems?

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

Does Castle Construction install battery storage?

0 recorded installations by Castle Construction (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, “Castle Construction, solar installer (California)”, https://panelcensus.com/installers/california/castle-construction-2435 (data as of September 21, 2026).