Surf Clean Energy
“The process was quicker than what we expected was told solar will be installed by April but it actually all happened in January.”
Best Solar Panel Installers near Smithtown, NY
1 of these contractors is based in Smithtown; the others serve Smithtown from towns including Hauppauge (4 mi), Ronkonkoma (7 mi) and Bohemia (9 mi).
2 open 24/7 · 9 open weekends · 14 rated 4.5+ · 2 show a license
Data verified October 16, 2026
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Sunation Energy
“I would like to send a special thanks to Cameron and Gina truly great employees and do above and beyond to help you.”
Truth Solar
“I would highly recommend using Truth Solar, as they make the transition to using solar very smooth.”
Long Island Power Solutions
“Their reliability stood out throughout the whole solar panel installation, and the crew was professional and punctual.”
Harvest Power LLC
“John was the best and took care of any issues in an expedited fashion with out me the homeowner having to do anything!”
The 15 contractors listed for Smithtown, NY design and install rooftop solar and battery systems. Each entry repeats what the company publishes about certifications, the equipment it fits and its hours, together with star ratings and comments drawn from public reviews.
Area overview: Smithtown, NY
14 of the 15 contractors on this page have a rating, from 4.5 to 5.0 across 3,281 reviews; 8 have 50 or more reviews. The topics that come up most in reviews of the contractors on this page are "price" and "informative". 2 are open around the clock; 9 are open on Saturdays and 6 on Sundays. 2 show a license on their websites and 1 lists staff certifications (GAF). 6 have ten or more years of experience, the longest 40 years. 2 offer emergency call-outs; 3 offer financing or payment plans; 11 give free estimates; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the contractors on this page; 13 publish a contact page; 11 list a public email and 4 take bookings online. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Do any of these firms say they are licensed?
2 of the 15 contractors here show a license on their websites. Ask what is actually being claimed: an individual credential, a company license and a manufacturer approval are three different things. Each can be checked with whoever issued it, and none of them is checked for you here.
Empire Clean Energy Supply
“Did business with these fine folks for years, they always followed up, guided and helped me from start to finish on sometimes complex projects!”
Leviathan Solar
“The installation was completed smoothly, communication was great throughout, and the final result exceeded our expectations”
NYS Essential Power
“We had some specific requests with equipment placement and the installation crew made accommodations as best as possible.”
Greenleaf Solar
“From listening to Diana's proposal to ultimately working with the owner Will the job went perfect.”
Harmony Energy
“I wholeheartedly endorse their services, confident that anyone seeking the pinnacle of expertise in solar panel installation will find no better professional.”
Smart Choice Contracting
“They were professional, ensured all debris was cleaned up at the end of the job, and did not damage any of our landscaping near the house.”
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Solar Pro Roofing
“After initial consultation with Rick and infinite questions with Jarret, I decided to go with them and the process has been seamless so far with roof replacement, solar panels installation.”
Sunrise Power Solutions
“The work was completed on time, and the service was excellent.”
Build My Solar
“Dave answered all of our questions and eases our concerns when we had a few (we have a new roof and had questions about warranties).”
Why these companies made our list
What customers say about contractors near Smithtown
- “Harmony energy was extremely professional, transparent in communication, and timely in all parts of the job for my solar panel installation.” — customer of Harmony Energy
- “The process was seamless and very professional. Definitely recommend this company to anyone interested in solar panels.” — customer of Long Island Power Solutions
- “The roofers and solar panel installers showed up on time and the workmanship was excellent.” — customer of Solar Pro Roofing
- “Great experience with the solar panel company. The team was professional, knowledgeable, and made the entire process easy from start to finish.” — customer of Greenleaf Solar
- “The team who installed my solar panels were exceptional, respectful of my home and property and really impressed me.” — customer of Surf Clean Energy
Excerpts from public reviews of the contractors listed on this page.
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