Solar.com Score
Every published customer review of each company, read in full and scored 0-10 across six categories. Under 20 analyzed review texts: not yet scored. Never for sale. How scores work →
Best solar companies California Sonoma County
Best solar companies in Sonoma County (2026)
Scored installers are ranked by Solar.com Score. Not-yet-scored active companies remain listed below them by recent Sonoma County installs, with public records beside every score.
31,435verified Sonoma County systems
24established companies listed
$4.85/Wmedian reported cost, owned systemsSolar.com base price: $2.82/WMedian is self-reported installed cost on owned-system public interconnection records. Solar.com base price is a starting price before site-specific adders (roof complexity, electrical work, etc.); final quotes vary.
223installers active in 2025
Sonoma County installers, ranked
Solar.com Score leads. Not-yet-scored active companies stay below by recent local installs.Every company with 250 or more verified Sonoma County installs is included. Scored companies receive the numbered rank; unscored rows show a dash.
Install counts: Sonoma County only
| # | Installer | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Northern Pacific Power Systems273 recent installs1,735 verifiedActive since 20100.1% leased | 273 | 1,735 | 2010 | 0.1% | 8.9 | Get a direct bid | |
| 2 | First Response Solar24 recent installs305 verifiedActive since 20200.0% leased | 24 | 305 | 2020 | 0.0% | 8.8 | Get a direct bid | |
| 3 | Suntegrity Solar55 recent installs685 verifiedActive since 20090.9% leased | 55 | 685 | 2009 | 0.9% | 8.7 | Get a direct bid | |
| 4 | Taylor Energy Systems56 recent installs259 verifiedActive since 20132.3% leased | 56 | 259 | 2013 | 2.3% | 8.7 | Get a direct bid | |
| 5 | Synergy Solar & Electrical Systems52 recent installs534 verifiedActive since 20090.0% leased | 52 | 534 | 2009 | 0.0% | 8.5 | Get a direct bid | |
| 6 | Michael & Sun Solar65 recent installs368 verifiedActive since 20150.3% leased | 65 | 368 | 2015 | 0.3% | 8.4 | Get a direct bid | |
| 7 | Citadel Roofing And Solar55 recent installs581 verifiedActive since 20170.0% leased | 55 | 581 | 2017 | 0.0% | 8.4 | Get a direct bid | |
| 8 | Solar Works41 recent installs748 verifiedActive since 20020.0% leased | 41 | 748 | 2002 | 0.0% | 8.3 | Get a direct bid | |
| 9 | Solarcraft Services50 recent installs851 verifiedActive since 20030.0% leased | 50 | 851 | 2003 | 0.0% | 8.2 | Get a direct bid | |
| 10 | Pure Power Solutions26 recent installs367 verifiedActive since 20020.0% leased | 26 | 367 | 2002 | 0.0% | 8.2 | Get a direct bid | |
| 11 | Sunrise Solar27 recent installs272 verifiedActive since 20130.0% leased | 27 | 272 | 2013 | 0.0% | 8.2 | Get a direct bid | |
| 12 | Summit Technology Group59 recent installs297 verifiedActive since 20100.0% leased | 59 | 297 | 2010 | 0.0% | 7.8 | Get a direct bid | |
| 13 | Simply Solar56 recent installs1,020 verifiedActive since 20140.5% leased | 56 | 1,020 | 2014 | 0.5% | 7.7 | Get a direct bid | |
| 14 | SunrunIncludes Vivint Solar records767 recent installs5,063 verifiedActive since 201368.0% leased | 767 | 5,063 | 2013 | 68.0% | 6.9 | Get a direct bid | |
| 15 | Better Earth Electric13 recent installs508 verifiedActive since 20201.8% leased | 13 | 508 | 2020 | 1.8% | 6.4 | Get a direct bid | |
| 16 | Tesla EnergyIncludes SolarCity records123 recent installs3,082 verifiedActive since 200721.6% leased | 123 | 3,082 | 2007 | 21.6% | 5.5 | Get a direct bid | |
| 17 | SunPower Corporation48 recent installs1,179 verifiedActive since 201010.4% leased | 48 | 1,179 | 2010 | 10.4% | 5.1 | Get a direct bid | |
| 18 | Freedom Forever39 recent installs701 verifiedActive since 201823.3% leased | 39 | 701 | 2018 | 23.3% | 4.3 | Get a direct bid | |
| — | Bright Planet245 recent installs628 verifiedActive since 201670.4% leased | 245 | 628 | 2016 | 70.4% | Not yet scored | Get a direct bid | |
| — | J & J Electric19 recent installs531 verifiedActive since 20060.0% leased | 19 | 531 | 2006 | 0.0% | Not yet scored | Get a direct bid |
Solar.com Scores are live for 18 of the 24 listed companies. Companies marked “Not yet scored” have fewer than 20 analyzed review texts or are still being analyzed; scores appear as each company's full review record is processed. Select up to 4 companies to compare them category by category.
What this data covers: These counts come from PG&E interconnection records, the investor-owned utility service in Sonoma County. Homes served by municipal or cooperative utilities interconnect through their local utility instead and do not appear in these records, so installers focused on those areas show fewer installs here than they actually build.
All install columns are Sonoma County-specific. The county's 223 active installers in 2025 include smaller and occasional operations below the table floor. Acquired brands count under their current parent: SolarCity under Tesla Energy, Vivint Solar under Sunrun. No per-installer price is published in the table.
Recent installs
Sonoma County installs recorded in 2025 and 2026. A big historical name with thin recent activity is a different signal than a company building every week.
Verified installs
Residential systems in Sonoma County public records listing that company as installer of record, all time. Real local activity, not review stars.
% leased
The share of that company's Sonoma County systems recorded as third party owned, a lease or power purchase agreement. Ownership mix, not quality.
% leased counts systems recorded as third party owned, meaning a lease or power purchase agreement. The remainder are customer owned. Active installer counts include every company that filed an interconnection that year, down to small and occasional operations. Counts come from PG&E, SCE, and SDG&E interconnection records; homes served by municipal utilities like LADWP, SMUD, and city power departments interconnect through their local utility instead, so companies focused on those territories show fewer records here. The Solar.com Score is computed from the full text of each company's published customer reviews (star ratings and review counts sourced from Google and Yelp), plus verified public-record track record; it drives the default ranking for scored companies and is never for sale.
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See your priceMedian installed price ($/W) - public records$4.85/W
Solar.com base price$2.82/W42% below median
How to read these pricesMedian is self-reported installed cost on owned-system public interconnection records. Solar.com base price is a starting price before site-specific adders (roof complexity, electrical work, etc.); final quotes vary.24established companies ranked in the county
Cities in Sonoma County
6 city guides from the same public-record dataset.FAQ
Who has the best solar company reviews in Sonoma County?
The Solar.com Score column ranks review evidence directly: we read the full text of every published customer review of the county's established installers and score what reviewers actually report, 0-10, across sales integrity, price transparency, communication, timeline reliability, workmanship, and after-install support. Sort the table by Solar.com Score or select companies to compare their reviews side by side.
Who is the best solar company in Sonoma County?
The best company depends on your roof, utility, equipment needs, and whether you want to own the system or use a lease-style agreement. The table ranks scored installers by Solar.com Score, keeps unscored active companies below them, and shows verified Sonoma County interconnection activity beside the score.
How are Sonoma County installers ranked here?
The list includes every company with at least 250 verified Sonoma County installs in CPUC Rule 21 public records through May 2026. Companies with a Solar.com Score are ranked by that score; companies not yet scored show a dash in the rank column and appear below the scored cohort, ordered by recent 2025-26 activity. Every install column is Sonoma County-specific. Acquired brands are combined with their current parent, so SolarCity records count under Tesla Energy and Vivint Solar records count under Sunrun.
What does % leased (TPO) mean?
% leased (TPO) is the share of that installer's recorded systems that appear as third-party owned. It helps you see whether an installer historically skews toward owned systems, leases, or a mix.
How does solar.com pricing compare in Sonoma County?
Sonoma County has a median reported install cost of $4.85/W on owned-system CPUC records. Run your address through solar.com to see direct bids for your home, backed by the Best Price Guarantee.
Does being listed mean solar.com recommends that installer?
No. The public table reports verified installation volume only. The companies that bid on your home are separately vetted before they can compete through solar.com, and nobody can buy public placement here.
How we built this data
Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.
Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.