Reduce or eliminate your electric bill, with little to no effort and guaranteed results.

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No obligations here – let’s explore how Solar can change your life together.

It’s no secret that New England has some of the highest electric rates in the country. While we dont get to choose our utility company we can choose where we get our energy from. Solar is one of the most accessible, affordable, and deployable sources of renewable energy for home and business owners. Solar might be one of the best investments you can make, but here’s the catch – it doesn’t work for everyone. That is why we offer free site evaluations so we can look at your specific situation and show you exactly how solar can work. We pride ourselves on our transparent and educational approach to solar and will show you the best case scenario for your home or business, all while answering your questions along the way. Fill out the form below to sign up for your free solar evaluation and take your first step to eliminating your electric bill!

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Start Your Free Solar Evaluation

No obligations here – let’s explore how Solar can change your life together.

Meet 603 Solar, your local, neighborhood solar company!

Check Out Some of Our Reviews on Google!

EXCELLENT

Based on 177 reviews

Deb Stanton

After meeting with several solar installation companies, we chose 603 Solar to install both our solar panels and an Enphase home battery system last Aug/Sept. We have been very happy with our choice. From our first consult visit through installation, the attention to detail, service and communication was exceptional. The Enphase battery initially had a glitch. Zach went above and beyond with Enphase to ensure it was resolved quickly. Zach (and the entire team) have been hands on, helpful and responsive from day one through post installation support. Our first electric bill is down 95% and we have had two short outages since installation, the battery worked seamlessly. We have found 603 Solar to be a company that truly lives up to their mission statement and highly recommend them to anyone considering a home solar project

Jeff Colburn

Quality and workmanship on the install was excellent. Great product and system installed! Very happy with the process and the way the team handled paperwork and approvals.

Ray B

Start to finish 603 solar has been exceptional. Estimates were straightforward, install was smooth, connection was painless. Jeff worked with us closely throughout the whole project. 10/10 will recommend.

Pete Oldham

Everything well explained, with fast installation and quick turnaround.

George DeWolf

From the sales staff to the installers and the folks in administration and support, everyone was courteous, professional, and helpful. We're thrilled to finally be generating green energy! Understanding how easy the process is, we wished we had done this a long time ago. Update on ROI & Payback Period: Standard payback calculations often miss the full financial picture by focusing strictly on monthly electric bill savings. A realistic solar evaluation should factor in several key dynamics: Property Value & Home Equity: A significant portion of your array's value can be recouped upon selling your home—a trend likely to accelerate with growing EV (electric-powered vehicle) adoption. Furthermore, many NH towns have adopted RSA 72:62, which explicitly exempts the added value of a solar array from local property tax assessments. EV Offsets: Sizing an array to power both your home and an electric vehicle replaces expensive gasoline costs, shortening your overall payback timeline significantly as fuel prices rise. Supplemental Heating Savings: If you use mini-splits to supplement an oil furnace, solar energy lets you run heat pumps cleanly during shoulder months (fall and spring), cutting down on costly heating oil consumption. Generating your own solar power locks in your electricity costs against utility hikes, while powering an electric vehicle at home extends that same price protection to your driving. Once the system is paid off, your marginal cost to generate power drops close to zero.

Sean Mercer-Smith

603 Solar, and Jeff specifically, have been nothing but excellent the whole way through. I had done a good bit of research but Jeff spent multiple phone calls and hours of his time explaining things in detail and sharing knowledge that exceeded what I had read. That was all prior to me committing to any work to be done. I requested specific panels and inverters for our project, Jeff made it happen. I requested a small change after install, Jeff answered and got it sorted out as soon as possible. I am writing this 4 months after install and Jeff still is willing to take my phone calls and ensure I’m very happy with the product I received (not to mention it has been great to produce all of our own power!). 603 Solar is where you will know your solar investment is done right and service doesn’t stop just because your install is complete. Thanks again!

Douglas Koch

If your thinking about transitioning to a solar system look no further than 603 Solar. From start to fininish prepared to have a professional at every step of the way. Jeff in sales was very knowledgeable and answered all of our question in full detail. The evaluation of the roof and positioning of the panels was completed in fine detail for maximum efficiency. Lastly the install team was terrific. They showed up on time, worked on the roof safely and had years of experience. This led to a great system install that looks amazing and is highly productive. I am going to use 603 again to install whole home batteries. Highly recommend them.

Paul Gurrisi

I highly recommend 603 solar. As a person who does most every project for myself, I wanted to say that this has been a very positive experience. In a time when most of us dread the thought of any contractor working on our homes because of poor service, poor schedule and questionable quality, I must say this has been exactly the opposite. The communication leading up to the install was excellent. I always had a very good idea where the process stood and the very few questions I did have were answered very quickly. The salesman, Steve, actually knew his product! The initial tech Keith was a pleasure to work with. The internal staff was great. Your subs were even better. Tyler and Caleb from 603 Electric were excellent. Their communication was great. From the call to ask if they could start a day early to their willingness to start work at 530 am to beat the heat, they were professional and hard working from the instant they arrived till the job was done. The quality of work looks great. They listened and actually routed the wiring where I asked without any objection. They cleaned up any and all evidence they were there, and even moved all the patio furniture back in place. Very thorough, professional and thoughtful crew! From everything I have seen, you run a great organization. Keep up the good work. I look forward to years of service with the system.

Mike D

STOP - See alert below!!! If you are checking reviews before buying a solar system you have found the right company. 603 Solar is: - Professional - Knowledgeable - Flexible - Zach delivers on his promises and no BS. ... Just like it used to be in the old days. 603 Solar has just installed a high quality system for us using high quality components. UPDATE During the first month, the system produced 3.6 MWh which if billed by Central Maine Power would cost between $880 to $970. In other words it equals a paycheck of approx $1,500 that I would have to earn BEFORE TAXES, ALERT Be on extreme alert if you are talking to "installers" or sales people from companies that are more interested in having you sign a contract than discussing the system. They may offer you a 30% rebate with some convoluted contract or lease agreement. CAUTION. The fine print is NOT presented up front. But it turns out that you only gain a few PERCENT (not 30%), and what happens if you end the lease early? Penalties? Bottom line - BS A solar installer should offer installations not convoluted attorney arrangements. Did this alert help you?

Mike Anderson

603 Solar is been amazing. They are professional, timely, and great communicators. We were blown away by how seamless and easy the whole process was.

Are You Ready To Go Solar?

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Who we are

Introducing 603 Solar

603 Solar is a Solar Installation company based in Exeter, NH. Since 2018 we have helped nearly 1,000 home and business owners make the switch to a more economic and sustainable energy source. We pride ourselves on our educational approach to solar and dedication to customer service. We offer turnkey Photovoltaic (PV) Solar Systems – taking the project from concept to commissioning and post install support afterwards.

Solar is different for everyone, and we take special care to evaluate each site to determine how solar can work. Since there are many considerations that vary from site to site, each system is custom designed for the owner’s needs. We work together to design an ideal system for each property that is not only efficient but offers the best return on investment and highest electricity offset possible – while answering any questions along the way.

We’re excited to show you how solar can not only be a smart investment, but also a powerful catalyst for change.

Why Invest in Solar?

Step 1: REDUCE OR ELIMINATE YOUR ELECTRIC BILL.

By creating your own, clean solar energy you can reduce or completely eliminate your electric gill. We typically see an average of a 7-9 year return on investment. With 25 year manufacturer warranties on all of the major components of the system, you can be assured that your system will continue to produce clean power for you for years to come.

Step 2: PROTECT YOURSELF AGAINST RISING UTILITY RATES.

New England has some of the highest electricity costs in the continental US. The cost of electricity is constantly rising and will never stop. When you create your own energy, you are no longer subjective to your utility companies fluctuating rates. Solar payments are fixed, and easier to budget.

Step 3: PROTECT THE ENVIRONMENT

In a world with increasingly finite natural resources, it’s up to all of us to do our part. Purchasing a solar array is not only a great investment, it also lowers your carbon footprint. To date our systems have produced more than 20,000,000 kWh of clean energy! That is the equivalent to the carbon emission from 1,500,000 gallons of gasoline, 16,000,000 lbs of coal or 32,000 barrels of oil.

Who’s Talking About 603 Solar?

Our Process

Step 1: Free Site Evaluation

To ensure top-notch service and maximize your ROI, we evaluate your property, considering roof structure, size, roof azimuth, main electric panel, sub panels, shading concerns, and other project-affecting factors. Subsequently, we analyze your yearly electric usage and determine the precise number of modules required for coverage, along with the optimal system to maximize your ROI.

Step 2: System Design

Following the evaluation, our PV Solar Designer utilizes CAD software to create a to-scale model of your home and solar array. This provides a clear visualization of the array’s appearance. We accommodate layout modifications and furnish a revised model if you desire layout modifications. Once the design meets your satisfaction, we finalize and prepare it for submission to obtain permits and approval from relevant authorities.

Step 3: Permit and Interconnection Approval

Once the design has been finalized, our team will fill out and submit all of the required paperwork for permit approval by your local AHJ and interconnection approval from your Utility company. Once both are approved we are ready to schedule and install the system.

Step 4: System Installation

Once the permit and interconnection applications have been approved by the town and utility, its time to schedule your installation and install your PV Solar array! We partner with professional, licensed, and insured Master Electrician’s who have overseen hundreds of installations and coordinate with them and you to figure out the best date to install your system.

Step 5: Inspection and Commissioning

Following installation, we coordinate an inspection with your local AHJ to ensure compliance with building and electric codes. Post-inspection, we handle the paperwork required for your utility company to replace your meter with a bi-directional one, enabling energy transfer to and from the grid. Once the new meter is installed, we power on your system, completing the process.

Step 6: System Monitoring

Once the system has been powered on and is operational we will set you up with the systems online monitoring program so you know exactly what your system is producing on any given, day month or year. With monitoring set up we can always see what your system is doing, and if an issue ever arises, we will know.

Free Solar Evaluation