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The 10 Best Solar Installers in Long Beach (2026)
This list ranks the best solar installers and solar panel services serving Long Beach, compiled from Google review data and updated for 2026. We use a Bayesian-style score that balances average rating with review volume so businesses with many strong reviews rise above small-sample outliers. Long Beach’s sunny climate and dense residential neighborhoods mean both installations and routine panel maintenance are in demand — consider installers, electricians, and specialized cleaning services when planning solar work. Read on for concise profiles to help you compare options based on real customer feedback.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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Mr. Solar Clean
Mr. Solar Clean tops the list because it combines a perfect 5.0 Google rating with a large sample size — 513 reviews — in the solar panel maintenance service category. That mix of outstanding average score and substantial review volume pushes it above other highly rated providers in our Bayesian-style ranking.
The full ranking
Guru Solar Cleaning
This solar panel maintenance service has a 5.0 rating based on 172 reviews and is located on Euclid Ave in Long Beach; the review count supports a strong reputation for cleaning-focused work.
172 reviews
Solar Source
Solar Source is shown as a solar energy company with a 5.0 rating from 112 reviews and an address on E 14th St in Long Beach, indicating local availability for installations or energy services.
112 reviews
MAD Solar & Gutter Cleaning Long Beach
With a perfect 5.0 average across 69 reviews, this solar energy company appears in our list though no precise street address is provided in the data.
69 reviews
Mario Castillo Electric
Listed under Electrician, Mario Castillo Electric holds a 4.9 rating from 543 reviews and is located at W Ocean Blvd in downtown Long Beach, suggesting substantial customer experience in electrical work.
543 reviews
Vasco Solar
Vasco Solar is categorized as a solar energy equipment supplier, carrying a 4.9 rating from 319 reviews and an address in Fountain Valley; the listing indicates a strong supplier presence in the region.
319 reviews
ELIONE SOLAR
ELIONE SOLAR shows a 5.0 rating with 29 reviews and is identified as a solar energy company; the provided address points to Buena Park (Aragon Cir) rather than Long Beach proper.
29 reviews
Evergreen Solar and Home Battery
This solar energy company has a 5.0 average from 27 reviews and an address in Huntington Beach (Bolsa Ave), reflecting a smaller but flawless review sample.
27 reviews
Aikyum Solar
Aikyum Solar, listed as a solar energy company, holds a 4.9 rating with 64 reviews and is located on Garden Grove Blvd in Westminster, indicating service options in nearby communities.
64 reviews
Solar Wholesale Group
Presented as a solar energy system service with a 4.9 rating from 36 reviews, Solar Wholesale Group has a Long Beach mailing address on 2nd St and represents a smaller-scale, highly rated option.
36 reviews
Frequently asked questions
How should I choose a solar installer in Long Beach?
Compare licensed contractors with experience on similar roofs and systems, check recent customer reviews, and confirm they handle required permits and inspections. Ask for multiple written estimates and clarify warranties for equipment and workmanship before signing.
What should I check before hiring a solar panel cleaning or maintenance service?
Verify the provider’s Google rating and number of reviews, confirm they use safe cleaning methods for PV panels, and ensure technicians are insured. Ask whether their service includes performance checks or reporting on panel condition.
When is the right time to contact a solar installer or maintenance company?
Contact an installer when you’re ready to evaluate system sizing, financing, and permits, and reach out to maintenance or cleaning services if you notice persistent soiling, reduced output, or after major storms. Regular inspections can catch issues before they reduce production significantly.
How was this ranking created and how should I use it?
This list is based on Google review ratings adjusted by review count using a Bayesian-style approach, updated for 2026. Use it as a starting point for vetting providers, then follow up with direct questions, credentials checks, and in-person estimates to find the best fit for your project.