603 Solar

Our 16-panel solar array went live the other day. We're thrilled with this system and have only good things to say about 603 Solar. Steve was knowledgable and transparent and steered us toward the best and largest possible array for a challenging roofline. Their price also was the lowest of three quotes we received — by a wide margin. The team at Grateful Electric that did the install had it done in four or five hours on a frigid January day. We're glad we did this and only wish we'd have done it sooner.

603 Solar installed 20 panels on our roof last month. Everything went like clockwork, from the first meeting with Steve to the final "flip of the switch" to connect us with Eversource. The install date arrived earlier than we expected, which was wonderful. The installation was completed in one day and the team tidied up and left the site spic and span. 603 Solar staff were extremely responsive and everyone we worked with were knowledgeable and professional. We are so glad we chose them to do the job.

We added residential rooftop solar in Gilford, NH with 603 Solar. We had previously investigated solar with one of the national companies and were really turned off by what we heard. When another business person we were interacting with recommended 603 Solar and explained that they were a local company and that he was friends with the owner, we tried again. We are so glad we did! The process was super smooth. We got great advice - some of that was even to hold off on some of the things we were thinking to wait for the next round of technology to be available. The workmanship was incredible. Not a single corner cut, even when doing things right was less convenient for 603 Solar they did them right. Our system is live now and we are super happy! Highly recommend 603 Solar!

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!

Quite simply the BEST contractor I've ever worked with. Communication, Service, Installation and follow-up are impeccable! Will 100% do business with them anytime I need solar work done. We were undertaking a fairly large project that included two key components: Mini Splits (heat pumps) and Solar. So, we had two great examples on opposite extremes. Luckily for us, 603 Solar made their portion of this project a breeze. From the very beginning, they communicated about the schedules, where things stood (ex. awaiting the Town Permit), when we could expect delivery of the equipment and more. They then went on to provide the most competent installation team ever (Tyler and Caleb were outstanding). Such professionalism on every aspect of the install. Day 1 they had all the racking done for our 48 panel system, all the electrical boxes put in. Day 2 they finished the panel installation and running all of the wires. By Day 3, they just had to come out for a few minutes to liven up the system. Photos speak for themselves. Everything neat, tidy, labeled and organized. Sean and Tyler kept in constant contact with what to expect next from the utility, the inspectors (because, yes, they pulled permits ... Inspector even said "we never have to worry about their work; it's always done perfectly"). Sean also came out to take a close look at the work, make sure we knew how the system operates and how to use the app. Marian even followed up with more ways to save by selling our RECs (Renewable Energy Credits). Every single one of their team was fantastic.