PanelCensus

Trillia Associates

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Solar installer based in California · installer record #13197 resolved from 67 public installation records.

Data through: California through Aug 2026 (monthly state program data).

At a glance

Trillia Associates is a solar installer with 67 recorded installations totalling 346 kW, dated 2001 to 2017. All of its records are in California, where it ranks 1781st of 6,163 profiled installers by volume and 2,959th of 10,840 nationally. The median installed price across 61 priced systems from all years is $7.07/W before incentives.

Recorded installs
67
Total capacity
346 kW
DC nameplate
Median system
3.9 kW
≈ $24,547
Median price
$7.07/W
all years · 61 priced
Third-party owned
0%
lease / PPA
Battery attach
0%
First recorded
2001
Last recorded
2017

Track record

Install volume by year

2001
2
2002
1
2003
11
2004
10
2005
4
2006
11
2007
6
2008
5
2009
6
2010
2
2011
7
2012
1
2017
1

Recorded installs per year.

Latest records

Most recent recorded installs

DateLocationSizePriceOwnership
Apr 24, 2017Richmond, CA3.8 kW$13,475Host-owned
Mar 29, 2012Oakland, CA6.2 kW—Host-owned
Sep 12, 2011Newark, CA1.6 kW—Host-owned
Sep 4, 2011Saint Helena, CA1.4 kW$7,278Host-owned
Aug 3, 2011Lower Lake, CA1.9 kW—Host-owned
Jun 3, 2011Lower Lake, CA7.8 kW$33,042Host-owned
May 23, 2011Middletown, CA4.2 kW$19,890Host-owned
May 19, 2011Mill Valley, CA5.6 kW$28,383Host-owned
Feb 1, 2011El Cerrito, CA8.3 kW$38,415Host-owned
Sep 28, 2010Concord, CA5.9 kW$24,376Host-owned

See all 67 installations →searchable & filterable; export to CSV with a free account

Service geography

California
67

Busiest cities

Oakland, CA 8Napa, CA 8Martinez, CA 5El Cerrito, CA 3Lafayette, CA 3Concord, CA 3Lower Lake, CA 2El Sobrante, CA 2

Record

Installer ID
PC-13197
First recorded install
Nov 8, 2001
Last recorded install
Apr 24, 2017
Priced records
61

Is this your company?

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How does Trillia Associates compare with other installers in California?

By recorded installations Trillia Associates ranks 1781st among the 6,163 installers based in California with five or more records. Its all-years median price of $7.07/W is about 66% above the California median of $4.26/W. Its median system, 3.9 kW, is about 34% 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. 0% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Remodel Usa (67), Solar Engineering (67) and Solarology (67).

How has Trillia Associates's installation volume changed?

Trillia Associates's earliest dated installation on record is from 2001. It has recorded installations in 13 calendar years. The busiest year was 2003, with 11 installations. 2017, its latest year with records, has 1. Its median price per watt moved from $8.22/W in 2001 to $3.50/W in 2017. The most recent recorded installation is dated Apr 24, 2017. No installation in the public records is dated within the last three years.

Where does Trillia Associates install solar?

All recorded installations are in California. The cities with the most of its installations are Oakland, CA (8), Napa, CA (8), Martinez, CA (5), El Cerrito, CA (3) and Lafayette, CA (3).

Frequently asked questions

How many solar installations has Trillia Associates completed?

PanelCensus records 67 installations by Trillia Associates, from Nov 8, 2001 to Apr 24, 2017, totalling 346 kW of capacity. Public reporting varies by state, so the company's true total may be higher.

What does Trillia Associates charge for solar?

The median installed price across 61 priced systems from all years is $7.07/W before incentives (median system 3.9 kW, about $24,547). The California median is $4.26/W. Prices are the total project cost reported to state programs, so they can include work billed with the solar.

Where does Trillia Associates install solar?

All 67 recorded installations are in California, the most of them in Oakland.

Is Trillia Associates still installing solar?

The most recent installation attributed to Trillia Associates in the public records is dated Apr 24, 2017; 2017 has 1 recorded installation. Records here run California through Aug 2026 (monthly state program data), so the newest installations may not appear yet.

Does Trillia Associates install leased or PPA solar systems?

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

Does Trillia Associates install battery storage?

0 recorded installations by Trillia Associates (0%) include a battery.

Related installers and places

Dataset updated . Sources: LBNL Tracking the Sun (through 2025), monthly state program records (California DGStats, NYSERDA, NJ Clean Energy, Illinois Shines) and permit records; installer resolved by exact-normalized name matching and, for state program records, by the systems both sources share.

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, “Trillia Associates, solar installer (California)”, https://panelcensus.com/installers/california/trillia-associates-13197 (data as of September 21, 2026).