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603 Solar review

With an overall third-party rating of 4+ and positive feedback across more than 10 reviews from different platforms, 603 Solar is distinguished as a Market Leader. They've established themselves in 1 state, which points to solid customer relationships in these markets. If you're looking for an experienced solar provider known for both quality and reliability, 603 Solar stands out as a premier choice in the solar installation industry.
5Expert Score
Market Leader

📍 24 Charter St, Exeter, NH 03833, 📲 +16035702607

603 Solar Overview

Expert Score: 5.0/5
Founded in: 2018
603 Solar, established in 2018, has been an active participant in the solar industry, providing services in 1 state. We dug into what 603 Solar offers, how customers actually feel about working with them, and where they stand in the industry to give you the straight story for your solar decision.

603 Solar’s Offerings at a Glance:

  • Customer experience: Reviews average out to 5.0, painting a picture that includes both satisfied customers and those with concerns.
  • Service range: Along with solar-related work, covering most of what homeowners need, 603 Solar handles Solar panel installation, free site evaluation, financing assistance, residential solar solutions, commercial solar solutions, solar energy education, system design and customization, solar module selection, solar inverter selection, permitting and inspections coordination, grid connection assistance, renewable energy credit (REC) ) guidance, energy usage monitoring, and customer support.
  • Web traffic and visibility: Their site attracts roughly 1333 monthly visits, showing a Positive growth trend and indicating where things are headed.
  • Coverage area: Operating in NM. 603 Solar is actively expanding solar system installations across various markets.
  • Certifications and licenses: They maintain the standard certifications you’d expect – NABCEP, BBB, SEIA, UL. The BBB has them rated at A+, which factors into how they stack up professionally.

Deciding whether 603 Solar fits your needs depends on weighing their track record against some of the mixed feedback available. Getting the full picture requires digging into the details. Our breakdown comes from 10 sources to help you decide if 603 Solar is the right fit for your solar project.

Independent Sources

603 Solar Reviews

🔗 SourceVotesAverage Score
energysage.com155.0
solarreviews.com264.6
yelp.com15.0
bbb.org15.00
consumeraffairs.comNo reviewsNo reviews
indeed.comNo reviewsNo reviews
trustpilot.comNo reviewsNo reviews
angi.comNo reviewsNo reviews
birdeye.comNo reviewsNo reviews
Google reviews1605.0
Expert Score5.0

Learn more: What Made Us Choose Sources for Expert Score?

Based on Company Info

603 Solar Reviews

Company Website603solar.com
Year Founded2018
Areas ServedNM
Services OfferedSolar panel installation, free site evaluation, financing assistance, residential solar solutions, commercial solar solutions, solar energy education, system design and customization, solar module selection, solar inverter selection, permitting and inspections coordination, grid connection assistance, renewable energy credit (REC) ) guidance, energy usage monitoring, and customer support.
Roofing service
Panel OptionsSolarEdge, Qcells
Battery InstallationsEnphase, SolarEdge
CertificationsNABCEP, BBB, SEIA, UL
Solar system leases service
Expands dealership network
BBB RatingA+
Warranty12-year workmanship warranty

603 Solar Website Visits Two-Year Trend: Positive

Learn more:  Website Visits Trend.

Avg Monthly VisitsPage Per VisitTime On SiteBounce RateDirect TrafficSearch TrafficPaid Search TrafficReferral TrafficMail TrafficSocial Traffic
13332.1972.20.3223%25%0.24%2.7%0.02%39.5%

603 Solar Social Media

Comment
byu/rocademiks from discussion
innewhampshire
Comment
byu/rocademiks from discussion
innewhampshire

What Do Customers Say About the 603 Solar?

energysage.com

Positive reviews:

“I was very happy with the service I received with 603 Solar. Every response was clear, efficient and informative. The prep, installation and post installation approval process went smoothly and quickly. Thank you, The Sanders family” – michael.sanders1 ⭐⭐⭐⭐⭐ June 20, 2024

“Our system was installed on schedule and finished up quickly. Steve C. was great and helped us through the proposal, permit and installation process. The office folks have been great about answering questions and getting us set up for success. The 603Solar Team is great. Thanks for a really positive experience!!!” – rcecc ⭐⭐⭐⭐⭐ March 5, 2025

solarreviews.com

Positive reviews:

“I had read reviews for 603 Solar and that is one of the reasons I went with them. I am extremely pleased with my experience dealing with Zach, Tyler and everyone from 603 Solar. They are very responsive, knowledgeable and professional. I highly recommend them.” – Winton ⭐⭐⭐⭐⭐ November 3, 2022

“We used 603 for our PV system. Zach and his crew were great to work with. Though, some supply issues which everyone is facing did push the project back it was worth it. He installers and design team were just great at answering all of our questions no matter what. We spoke to two other companies locally who also have great reps but 603 came in right on our budget and were honestly upfront the entire time about any delays.” – NewEnglander ⭐⭐⭐⭐⭐ October 31, 2022

Google Reviews

Positive reviews:

“603 Solar did an amazing job installing a solar array on my garage roof and backside of my business this past month. From start to finish the project went smoothly, with clear and regular communication from Sean and timely, and clean electrical work and install. The panels look great (they blend in quite well with the roof) and are working exactly as expected. If you’re in the market for solar this is absolutely the company to work with!” – Eric Stephens ⭐⭐⭐⭐⭐ August 2025

“603 was absolutely wonderful to work with for the solar install! From the estimate right on through the project, they had great communication, they did clean work, and made sure it was hassle free. I would not hesitate to work with them again and again.” – Phil Boyd ⭐⭐⭐⭐⭐ July 2025


Summarizing:

Do We Recommend 603 Solar Services?

Market Leader

With an overall third-party rating of 4+ and positive feedback across more than 10 reviews from different platforms, 603 Solar is distinguished as a Market Leader. They’ve established themselves in 1 state, which points to solid customer relationships in these markets. If you’re looking for an experienced solar provider known for both quality and reliability, 603 Solar stands out as a premier choice in the solar installation industry.

Andy Worford
Andy Worford

Founder and Chief Content Officer at Resident Solar Power. Andy's been following solar policy and technology long enough to know which trends matter and which ones are just noise. He writes about photovoltaic systems, policy changes, and green tech innovations - basically, anything that helps homeowners make smarter solar decisions.

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