Reduce or ELIMINATE your electric bill in as little as 30 days, with zero effort and guaranteed results.

Click below to check your address

No Payment Due...

Stratham, NH
Utility: Unitil
$0 balance
-$380.45 credit
Newmarket, NH
Utility: Eversource
$0 balance
-$27.50 credit
Chester, NH 
Utility: NHEC
$0 Balance
-$58.14 credit

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 grill. We typically see an average of a 7-9 year return on investment.

With 25-year manufacturer warranties on all of the system’s major components, you can be assured that your system will continue to produce clean power 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 subject 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, but 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 emissions from 1,500,000 gallons of gasoline, 16,000,000 lbs of coal, or 32,000 barrels of oil.

Solar is one of the best home improvement projects you can make.

Why? Because you can turn your home into your own personal POWER PLANT. Instead of paying the utility company hundreds or even thousands of dollars per year you can generate that energy yourself and sell the excess back to the grid.
Click below to check your address

Don’t take our word for it!

Click below to check your address
Case Study 1

Sandwich, NH

System Size: 15.2 kW
Year 1 Production: 21,795 kWh
Value of year one energy: $3,923
Average monthly bill before solar: $330
Average monthly bill after solar: $0
ROI (return on investment) period: 7.2 years

This 15.2 kW roof array was installed in summer of 2019. Before going solar the homeowners average electric bill was around $330 per month. In the first year of production the system generated 21,795 kWh, which is about $3,923 worth of electricity. Not only was this enough to cover their usage but there was enough left over to cover the fixed charges of their bill as well. Since then, the system has generated over 112,000 kWh which is $20,000+ in electricity costs. Not only has it produced enough to nearly cover the upfront cost but still has 19 years of producing under warranty.

Case Study 2

Elliot, ME

System Size: 12.8 kW
Year 1 Production: 14,650 kWh
Value of year one energy: $2,637
Average monthly bill before solar: $180
Average monthly bill after solar: $14
ROI (return on investment) period: 9.5 years

This 12.8 kW roof array was installed in the summer of 2022. Before going solar the homeowners had an average electric bill of $180 but wanted to oversize the system for an EV that they just purchased. We were able to estimate the approximate usage of the EV and account for it in the system design. The system’s lifetime production is over 36,000 kWh or $6,480 of electricity so far, and its well on its way to paying itself off! Not to mention the avoided cost to charge their new EV.
Case Study 3

Alton, NH

System Size: 15.3 kW
Year 1 Production: 19,900 kWh
Value of year one energy: $3,402
Average monthly bill before solar: $180
Average monthly bill after solar: $0
ROI (return on investment) period: 8.6 years

This 15.3 kW ground array was installed in July of 2021. Their average bill was about $200 before solar was installed. In the first year, the array produced 19,900 kWh or about $3,402 of electricity! This was more than the homeowner needed, but they wanted to account for room to grow in the future. Any unused electricity is sold to the utility company and shows up on the utility bill as a credit. When there is more than $100, they get a check written to them from the utility company. Over its lifetime the array has produce more than 64,570 kWh, or $11,600 worth of electricity.
Click below to check your address

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.

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.

Click below to check your address

Check out some of our reviews:

Privacy Policy | Terms & Conditions
Copyright 2025 – 603solar.com, All Rights Reserved
This site is not a part of the Facebook website or Facebook Inc. Additionally, This site is NOT endorsed by Facebook in any way. FACEBOOK is a trademark of FACEBOOK, Inc.

Call Now