Top Rated Solar Contractors Serving Lake County, CA
Last Updated May 15, 2026
4218 Review Ratings and 2 Solar Companies Evaluated.
These companies have passed our Preliminary 5-step rating process.
Harmony Air
Harmony Air offers a wide range of solar services to residential and commercial clients throughout Lake County. The company has the in-house capabilities to work on everything from solar pool heating and solar panel repairs to solar panel installations and solar generators, and it customizes each project to meet the client’s budget requirements.
Services
Solar Contractors including solar repair, solar energy solutions, solar systems, commercial solar installation, solar panel leasing, passive house consulting, heating & ventilation and air conditioning.
Coverage Areas
The Mendo–Lake Area, including Lake County—key cities including Finley, Glenhaven, Kelseyville, Clearlake Oaks, Lucerne, Cobb, Lakeport, Lower Lake, Clearlake Park and Clearlake.
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- 10230 Hwy 175
- Kelseyville, CA 95451
Jonas Energy Solutions
Jonas Energy Solutions offers a variety of solar services to residential and commercial clients throughout Lake County. The company has the training and equipment to handle everything from energy storage consultations and solar roof tiles to solar system maintenance and site evaluations, and its employees focus on delivering first-rate workmanship on every project.
Services
Solar Contractors including commercial solar installation, solar energy solutions, solar panel financing, solar repair, solar system installation, air conditioning installation, mini split/ductless systems, evaporative coolers, heating installation, oil heating systems, pool heaters, humidifiers and dehumidifiers, generators, tankless water heaters, oil fired water heaters and heat pump water heaters.
Coverage Areas
The Mendo–Lake Area, including Lake County—key cities including Angwin, Calistoga, Clearlake, Clearlake Oaks, Kelseyville, Lakeport, Lower Lake, Middletown, St Helena, Willits, Ukiah, Redwood Valley and Hidden Valley Lake.
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- 9125 CA-53
- Lower Lake, CA 95457
These companies have earned our Pre-Qualified Rating. Learn more about our 5-step process.
Rating Step 1 = Stars
Meet or exceed a
ONE AllRatings star score of 4.5.
Indicates the final super-composite calculation of all reviews scores from all sources, optimized for accuracy and recency.
Read ONE AllRatings methodologyRating Step 2 = License
Verified active and in good standing (when required).
State license bureau data is accessed and analyzed.
Verify Solar License HereRating Step 3 = Background
Satisfactory status.
Internet searches were performed seeking disqualifying information on each company.
Rating Step 4 = Complaints
Satisfactory status.
Complaint bureau records have been searched seeking disqualifying information on each company.
Search Better Business BureauRating Step 5 = Specialist
Satisfactory status.
Our research specialist verifies all ratings steps have been passed and creates a final report and profile.
Meet our research specialist team
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