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 Diego County
Best solar companies in San Diego County (2026)
Scored installers are ranked by Solar.com Score. Not-yet-scored active companies remain listed below them by recent San Diego County installs, with public records beside every score.
285,020verified San Diego County systems
132established companies listed
$4.82/Wmedian reported cost, owned systemsSolar.com base price: $2.53/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.
548installers active in 2025
San Diego 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 Diego County installs is included. Scored companies receive the numbered rank; unscored rows show a dash.
Install counts: San Diego County only
| # | Installer | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Aloha Solar Power559 recent installs1,560 verifiedActive since 20200.0% leased | 559 | 1,560 | 2020 | 0.0% | 9.2 | Get a direct bid | |
| 2 | New Day Solar53 recent installs651 verifiedActive since 20120.6% leased | 53 | 651 | 2012 | 0.6% | 9.1 | Get a direct bid | |
| 3 | Cosmic Solar133 recent installs1,698 verifiedActive since 20092.1% leased | 133 | 1,698 | 2009 | 2.1% | 9.0 | Get a direct bid | |
| 4 | San Diego County Solar83 recent installs795 verifiedActive since 20110.3% leased | 83 | 795 | 2011 | 0.3% | 8.9 | Get a direct bid | |
| 5 | Stellar Solar511 recent installs8,127 verifiedActive since 20050.8% leased | 511 | 8,127 | 2005 | 0.8% | 8.9 | Get a direct bid | |
| 6 | San Diego Solar Install15 recent installs381 verifiedActive since 20100.0% leased | 15 | 381 | 2010 | 0.0% | 8.8 | Get a direct bid | |
| 7 | Sunline Energy319 recent installs4,772 verifiedActive since 20120.0% leased | 319 | 4,772 | 2012 | 0.0% | 8.7 | Get a direct bid | |
| 8 | Green Energy Epc By Makello21 recent installs408 verifiedActive since 20130.0% leased | 21 | 408 | 2013 | 0.0% | 8.6 | Get a direct bid | |
| 9 | Jamar Power System98 recent installs942 verifiedActive since 20072.1% leased | 98 | 942 | 2007 | 2.1% | 8.6 | Get a direct bid | |
| 10 | West Coast Solar147 recent installs1,943 verifiedActive since 20100.3% leased | 147 | 1,943 | 2010 | 0.3% | 8.6 | Get a direct bid | |
| 11 | Alltech Solar63 recent installs896 verifiedActive since 20100.0% leased | 63 | 896 | 2010 | 0.0% | 8.6 | Get a direct bid | |
| 12 | Peak Power Solutions2 recent installs254 verifiedActive since 201315.4% leased | 2 | 254 | 2013 | 15.4% | 8.5 | Get a direct bid | |
| 13 | Alive Industries81 recent installs803 verifiedActive since 20130.7% leased | 81 | 803 | 2013 | 0.7% | 8.5 | Get a direct bid | |
| 14 | Sungenia Solar Solutions54 recent installs521 verifiedActive since 20140.0% leased | 54 | 521 | 2014 | 0.0% | 8.5 | Get a direct bid | |
| 15 | Wave Electric Energy32 recent installs379 verifiedActive since 20200.0% leased | 32 | 379 | 2020 | 0.0% | 8.5 | Get a direct bid | |
| 16 | Sattler Engineering51 recent installs453 verifiedActive since 20160.0% leased | 51 | 453 | 2016 | 0.0% | 8.5 | Get a direct bid | |
| 17 | Guyou Construction5 recent installs259 verifiedActive since 20144.2% leased | 5 | 259 | 2014 | 4.2% | 8.4 | Get a direct bid | |
| 18 | Solarquest6 recent installs292 verifiedActive since 20130.0% leased | 6 | 292 | 2013 | 0.0% | 8.4 | Get a direct bid | |
| 19 | Blalock Electric142 recent installs1,951 verifiedActive since 20152.7% leased | 142 | 1,951 | 2015 | 2.7% | 8.4 | Get a direct bid | |
| 20 | Raneri And Long24 recent installs453 verifiedActive since 20150.0% leased | 24 | 453 | 2015 | 0.0% | 8.4 | Get a direct bid |
Solar.com Scores are live for 76 of the 132 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 SDG&E interconnection records, which cover effectively all of San Diego County, so this table is close to a complete picture of the county's residential solar market.
All install columns are San Diego County-specific. The county's 548 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 Diego 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 Diego 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 Diego 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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Where solar.com fits in
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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.
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Same crews. Different price.
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See your priceMedian installed price ($/W) - public records$4.82/W
Solar.com base price$2.53/W48% 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.132established companies ranked in the county
Cities in San Diego County
2 city guides from the same public-record dataset.
FAQ
Who has the best solar company reviews in San Diego 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 Diego 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 Diego County interconnection activity beside the score.
How are San Diego County installers ranked here?
The list includes every company with at least 250 verified San Diego 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 Diego 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 Diego County?
San Diego County has a median reported install cost of $4.82/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.