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The 10 Best Solar Installers in Philadelphia (2026)
Philadelphia homeowners and businesses are increasingly weighing solar as a practical option, and the local market includes a mix of city-focused contractors and suburban suppliers. This ranking lists the 10 best solar installers serving Philadelphia and nearby communities, built from Google review data and updated for 2026. We use a Bayesian-style score — the average Google rating weighted by review count — so businesses with many positive reviews rise above one-off ratings. The list gives a reputation snapshot based on public reviews; it is not an inspection report. Always request a site visit, written estimates, and documentation about permits and warranties before choosing a contractor.
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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TerraSol Energies, Inc.
TerraSol Energies, Inc. tops this list because it combines a perfect 5.0 Google rating with a substantial review base of 181 reviews, which carries weight in our Bayesian-style method. Google categorizes it as a Solar energy equipment supplier located in Chadds Ford, PA, indicating a focus on equipment as shown in public listings. That mix of flawless average and considerable review volume is what places it at number one in our 2026 ranking.
The full ranking
Paradise Energy Solutions
Paradise Energy Solutions is a Solar energy company based in Paradise, PA, with a perfect 5.0 Google rating across 172 reviews.
172 reviews
Open Sky Energy
Open Sky Energy appears in Swarthmore as a Solar energy company and carries a 5.0 Google score from 37 reviewers.
37 reviews
Pennstar Solar LLC
Pennstar Solar LLC is listed as a Solar energy company in Merion Station and has a 5.0 rating on Google from 30 reviews.
30 reviews
O’Donnell Solar Co.
O’Donnell Solar Co., shown at an address in Berwyn, is categorized as a Solar energy company and has a 5.0 Google rating based on 27 reviews.
27 reviews
Finray Solar
Finray Solar, a Solar energy company in Bala Cynwyd, holds a 4.9 Google rating backed by 937 reviews.
937 reviews
Lumina Solar PA
Lumina Solar PA is listed as a Solar energy company in Hereford Township and carries a 4.9 rating from 326 Google reviewers.
326 reviews
Solr Standard
Solr Standard shows as a Solar energy company in Warminster, with a 4.9 Google score compiled from 148 reviews.
148 reviews
Integrated Home Energy
Integrated Home Energy, operating in West Chester, is categorized as a Solar energy company and has a 4.9 Google rating across 128 reviews.
128 reviews
Belmont Solar
Belmont Solar appears as a Solar energy company in Gordonville and maintains a 4.9 Google rating based on 124 reviews.
124 reviews
Frequently asked questions
How should I choose a solar installer?
Start by comparing multiple written estimates and checking each company’s licensing, insurance, and local references. Look at product warranties, expected system performance, and whether the installer performs a site visit and structural assessment before quoting.
What does a typical residential solar installation cost?
Cost varies widely depending on system size, roof complexity, panel and inverter quality, and available incentives or financing. Get several quotes and ask installers to break cost down by equipment, labor, permits, and any expected maintenance.
What should I check before hiring an installer?
Verify that the installer holds appropriate licenses and insurance, request references or recent project examples, and confirm details in a written contract covering timeline, payment schedule, warranties, and responsibility for permits and inspections. Also ask how they handle system monitoring and maintenance after installation.
How was this ranking built?
This list is based on Google review data and updated for 2026; we use a Bayesian-style score that weights average ratings by review count so businesses with many positive reviews rise in the ranking. It reflects public reputation only and does not substitute for a technical inspection or a personalized quote.