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 San Joaquin County
Best solar companies in San Joaquin County (2026)
Scored installers are ranked by Solar.com Score. Not-yet-scored active companies remain listed below them by recent San Joaquin County installs, with public records beside every score.
62,444verified San Joaquin County systems
36established companies listed
$3.56/Wmedian reported cost, owned systemsSolar.com base price: $2.64/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.
246installers active in 2025
San Joaquin 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 San Joaquin County installs is included. Scored companies receive the numbered rank; unscored rows show a dash.
Install counts: San Joaquin County only
| # | Installer | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 | West Coast Solar5 recent installs267 verifiedActive since 20121.5% leased | 5 | 267 | 2012 | 1.5% | 8.6 | Get a direct bid | |
| 2 | Senga Energy156 recent installs397 verifiedActive since 201975.8% leased | 156 | 397 | 2019 | 75.8% | 8.4 | Get a direct bid | |
| 3 | Citadel Roofing And Solar705 recent installs1,114 verifiedActive since 20174.3% leased | 705 | 1,114 | 2017 | 4.3% | 8.4 | Get a direct bid | |
| 4 | Solar Installation Group55 recent installs555 verifiedActive since 20164.7% leased | 55 | 555 | 2016 | 4.7% | 8.3 | Get a direct bid | |
| 5 | American Array Solar Electric30 recent installs824 verifiedActive since 20150.0% leased | 30 | 824 | 2015 | 0.0% | 8.0 | Get a direct bid | |
| 6 | Grid Alternatives135 recent installs822 verifiedActive since 201298.1% leased | 135 | 822 | 2012 | 98.1% | 7.8 | Get a direct bid | |
| 7 | Five Star Solar52 recent installs499 verifiedActive since 20140.2% leased | 52 | 499 | 2014 | 0.2% | 7.7 | Get a direct bid | |
| 8 | Honeys Air & Solar5 recent installs315 verifiedActive since 20110.0% leased | 5 | 315 | 2011 | 0.0% | 7.7 | Get a direct bid | |
| 9 | Hooked On Solar6 recent installs258 verifiedActive since 201614.0% leased | 6 | 258 | 2016 | 14.0% | 7.5 | Get a direct bid | |
| 10 | Semper Solaris44 recent installs397 verifiedActive since 20146.0% leased | 44 | 397 | 2014 | 6.0% | 7.4 | Get a direct bid | |
| 11 | SunrunIncludes Vivint Solar records2,537 recent installs14,359 verifiedActive since 201468.2% leased | 2,537 | 14,359 | 2014 | 68.2% | 6.9 | Get a direct bid | |
| 12 | Lift Energy Construction0 recent installs313 verifiedActive since 202144.7% leased | 0 | 313 | 2021 | 44.7% | 6.9 | Get a direct bid | |
| 13 | Empower Electric Solar99 recent installs974 verifiedActive since 20201.1% leased | 99 | 974 | 2020 | 1.1% | 6.8 | Get a direct bid | |
| 14 | Future Energy25 recent installs627 verifiedActive since 20110.0% leased | 25 | 627 | 2011 | 0.0% | 6.5 | Get a direct bid | |
| 15 | Better Earth Electric79 recent installs432 verifiedActive since 202027.3% leased | 79 | 432 | 2020 | 27.3% | 6.4 | Get a direct bid | |
| 16 | Energy Service Partners28 recent installs313 verifiedActive since 201824.9% leased | 28 | 313 | 2018 | 24.9% | 6.0 | Get a direct bid | |
| 17 | Tesla EnergyIncludes SolarCity records327 recent installs7,475 verifiedActive since 200836.8% leased | 327 | 7,475 | 2008 | 36.8% | 5.5 | Get a direct bid | |
| 18 | Infinity Energy22 recent installs1,620 verifiedActive since 201553.3% leased | 22 | 1,620 | 2015 | 53.3% | 5.3 | Get a direct bid | |
| 19 | SunPower Corporation44 recent installs4,980 verifiedActive since 200823.7% leased | 44 | 4,980 | 2008 | 23.7% | 5.1 | Get a direct bid | |
| 20 | V3 Electric182 recent installs709 verifiedActive since 201581.8% leased | 182 | 709 | 2015 | 81.8% | 5.0 | Get a direct bid |
Solar.com Scores are live for 24 of the 36 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 San Joaquin 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 San Joaquin County-specific. The county's 246 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
San Joaquin 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 San Joaquin 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 San Joaquin 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$3.56/W
Solar.com base price$2.64/W26% 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.36established companies ranked in the county
Cities in San Joaquin County
6 city guides from the same public-record dataset.FAQ
Who has the best solar company reviews in San Joaquin 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 San Joaquin 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 San Joaquin County interconnection activity beside the score.
How are San Joaquin County installers ranked here?
The list includes every company with at least 250 verified San Joaquin 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 San Joaquin 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 San Joaquin County?
San Joaquin County has a median reported install cost of $3.56/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.