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 Napa County
Best solar companies in Napa County (2026)
Scored installers are ranked by Solar.com Score. Not-yet-scored active companies remain listed below them by recent Napa County installs, with public records beside every score.
8,918verified Napa County systems
16established companies listed
$4.52/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.
141installers active in 2025
Napa County installers, ranked
Solar.com Score leads. Not-yet-scored active companies stay below by recent local installs.Every company with 100 or more verified Napa County installs is included. Scored companies receive the numbered rank; unscored rows show a dash.
Install counts: Napa County only
| # | Installer | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Northern Pacific Power Systems32 recent installs142 verifiedActive since 20140.0% leased | 32 | 142 | 2014 | 0.0% | 8.9 | Get a direct bid | |
| 2 | Ambrose Solar37 recent installs258 verifiedActive since 20180.0% leased | 37 | 258 | 2018 | 0.0% | 8.8 | Get a direct bid | |
| 3 | Suntegrity Solar10 recent installs100 verifiedActive since 20102.0% leased | 10 | 100 | 2010 | 2.0% | 8.7 | Get a direct bid | |
| 4 | Citadel Roofing And Solar76 recent installs252 verifiedActive since 20170.0% leased | 76 | 252 | 2017 | 0.0% | 8.4 | Get a direct bid | |
| 5 | Solarcraft Services8 recent installs136 verifiedActive since 20040.0% leased | 8 | 136 | 2004 | 0.0% | 8.2 | Get a direct bid | |
| 6 | Green Stock Solar36 recent installs395 verifiedActive since 20120.0% leased | 36 | 395 | 2012 | 0.0% | 8.2 | Get a direct bid | |
| 7 | Semper Solaris18 recent installs119 verifiedActive since 20162.5% leased | 18 | 119 | 2016 | 2.5% | 7.4 | Get a direct bid | |
| 8 | SunrunIncludes Vivint Solar records227 recent installs1,340 verifiedActive since 201371.0% leased | 227 | 1,340 | 2013 | 71.0% | 6.9 | Get a direct bid | |
| 9 | Better Earth Electric7 recent installs127 verifiedActive since 20209.4% leased | 7 | 127 | 2020 | 9.4% | 6.4 | Get a direct bid | |
| 10 | High Definition Solar10 recent installs141 verifiedActive since 20130.0% leased | 10 | 141 | 2013 | 0.0% | 5.9 | Get a direct bid | |
| 11 | Tesla EnergyIncludes SolarCity records55 recent installs1,032 verifiedActive since 200717.3% leased | 55 | 1,032 | 2007 | 17.3% | 5.5 | Get a direct bid | |
| 12 | SunPower Corporation8 recent installs392 verifiedActive since 20156.4% leased | 8 | 392 | 2015 | 6.4% | 5.1 | Get a direct bid | |
| 13 | V3 Electric32 recent installs244 verifiedActive since 201881.1% leased | 32 | 244 | 2018 | 81.1% | 5.0 | Get a direct bid | |
| 14 | Freedom Forever26 recent installs159 verifiedActive since 201841.5% leased | 26 | 159 | 2018 | 41.5% | 4.3 | Get a direct bid | |
| — | Bright Planet93 recent installs188 verifiedActive since 201978.7% leased | 93 | 188 | 2019 | 78.7% | Not yet scored | Get a direct bid | |
| — | Petersendean0 recent installs108 verifiedActive since 20110.0% leased | 0 | 108 | 2011 | 0.0% | Not yet scored | Get a direct bid |
Solar.com Scores are live for 14 of the 16 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 Napa 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 Napa County-specific. The county's 141 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
Napa 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 Napa 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 Napa 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.
Get bids from installers competing through solar.com.
Run your address and see direct pricing for Napa County in about two minutes. No sales call required.
Where solar.com fits in
Public rank. Address-level bid.
No sponsored slots. Placement is not for sale.Vetted before they bid
Before an installer competes through solar.com, we check license, insurance, workmanship history, and service follow-through, and keep reviewing after every project.
Bid accountability
The number has to hold up with equipment, roof scope, adders, warranties, and timelines, on one address-specific scope you can compare line by line.
The price is guaranteed
Direct bids skip the retail sales channel, and the Best Price Guarantee backs the final number in writing.
Same crews. Different price.
Through solar.com, vetted installers compete for your project on one address-specific scope, and our Best Price Guarantee backs the bid.
See your priceMedian installed price ($/W) - public records$4.52/W
Solar.com base price$2.82/W38% 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.16established companies ranked in the county
Cities in Napa County
6 city guides from the same public-record dataset.FAQ
Who has the best solar company reviews in Napa 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 Napa 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 Napa County interconnection activity beside the score.
How are Napa County installers ranked here?
The list includes every company with at least 250 verified Napa 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 Napa 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 Napa County?
Napa County has a median reported install cost of $4.52/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.