15 Best Solar Companies in Waltham, MA (Aug 2022 Review)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Waltham based on:
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Customer review scores
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Solar installers near you
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Company policies and services offered
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Accreditations and certifications
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Updated 7/19/2022
Why you can trust EcoWatch
Best solar companies in Waltham
When choosing between the best solar panel companies, Waltham homeowners have more choices than ever before, which can be too much to take in, but we're here to make adopting solar power easier. While solar panels are a sizable investment, you'll be able to make that expense back and then some, all while helping to protect the planet. In fact, you could end up with savings of about $23,000 over 20 years.
If you want to start making use of the many perks of solar, we'll help you narrow down your options to find the Waltham solar installer that's the right price for you. To receive free quotes from the best solar companies in Waltham, you can click "get quote" below.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best Technology
The Green Panel
- Price-match guarantee
- Sleek, efficient, and durable solar panels
- Best solar battery on the market
- Some reported issues with customer service
- Customer service varies by local dealer
EcoWatch Rankings for Solar Companies in Waltham


Local Service
Alternative Energy Store, Inc.
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Offers a free quote process
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Educational sales approach
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Excellent reputation
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Some reports of long wait times for installation
Services Offered
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Commercial Solar Services
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Solar Roof Shingles
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Solar Batteries
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Solar Panels


Nationwide Service
Average Cost
SunPower
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Most efficient panels on the market
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National coverage
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Cradle to Cradle sustainability certification
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Great warranty coverage
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Expensive
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Customer service varies by local dealer
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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System Monitoring


Local Service
Sunlight Solar Energy, Inc.
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Can browse portfolio on website
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NABCEP-certified technicians
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More transparent pricing than competitors
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Offers a free quote process
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Educational sales approach
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Some reported communication issues
Services Offered
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Commercial Solar Services
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Solar Batteries
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Solar Panels


Regional Service
Average Cost
Momentum Solar
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Great warranty coverage
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Representatives are experts on local policies
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Concierge service ensures steady communication
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Slightly limited service offerings
Services Offered
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Solar Panels
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Solar Batteries


Nationwide Service
Average Cost
The Green Panel
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Price-match guarantee
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Sleek, efficient, and durable solar panels
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Best solar battery on the market
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Some reported issues with customer service
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Customer service varies by local dealer
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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Solar Roof Shingles
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System Monitoring


Local Service
Invaleon Technologies Corporation
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Licensing and credentials transparency
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Can browse portfolio on website
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More transparent pricing than competitors
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Educational sales approach
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Batteries
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Solar Panels


Local Service
Boston Energy Concepts
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Can browse portfolio on website
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Licensing and credentials transparency
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More transparent pricing than competitors
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Offers a free quote process
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Educational sales approach
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Batteries
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Solar Panels


Local Service
Solar On Earth
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Can browse portfolio on website
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Educational sales approach
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels


Regional Service
Average Cost
Sunrun
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Expansive service area
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Many financing options
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Some reported issues with customer service
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Some reported issues with door-to-door sales
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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Energy-Efficiency Upgrades


Regional Service
Average Cost
Trinity Solar
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Many financing options
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Family-owned and -operated
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Makes charitable contributions
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Limited service area
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Relatively short workmanship warranty
Services Offered
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Solar Panels
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Solar Batteries
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Energy-Efficiency Upgrades


Regional Service
Average Cost
Palmetto Solar
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Expansive service area
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Makes charitable contributions
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Certified B Corp
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No leases or PPAs
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Quality of installation may vary by location
Services Offered
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Solar Panels
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Solar Batteries
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Energy-Efficiency Upgrades
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Maintenance & Repairs


Local Service
GoSolar NH, LLC
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Educational sales approach
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Limited information available on website
Services Offered
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Solar Panels


Local Service
Solectria Renewables, LLC
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Educational sales approach
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Custom system designs
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Batteries
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Solar Panels


Local Service
SmartFlower North America, LLC
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Educational sales approach
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Batteries
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Solar Panels


Local Service
Newport Solar
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Licensing and credentials transparency
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Educational sales approach
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More transparent pricing than competitors
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Family owned and operated
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Limited information available on website
Services Offered
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Solar Panels
Solar Company Ranking Methodology
Click here to see a more detailed overview of our solar company ranking methodology.
The Cost and Benefits of Solar in Waltham
For most homeowners, whether or not you should invest in a solar energy system boils down to the cost. The cost of solar and the savings it generates vary depending on some key factors such as:
- Choice of solar panels: The kind of solar panels you need will affect your total cost. High-efficiency monocrystalline panels are more expensive upfront but can also save you more money over the lifetime of your system. If you don't need to maximize efficiency, you can opt for a higher number of more affordable panels.
- Average daily sunlight: Since Waltham gets a decent amount of average daily sunlight, your solar panels can generally produce enough energy to power your whole home, which impacts how much your solar panels can save you on your electricity bills.
- average energy usage: The more power your home consumes on average and the higher your current power bills are, the more money you could save by going solar.
- Incentives: Something that can make your solar project cost less is the solar investment tax credit (ITC), which is a tax credit that lets you deduct from your taxes a percentage of the project cost. You can also save on your energy bills, which can lead to an average of $23,000 of savings over 20 years.
Because of solar panels now being cheaper than ever as well as local and federal solar incentives, they are a solid investment for the majority of homeowners.
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For an estimate of both how much you could save and help the Earth by installing a solar panel system, you can test out the calculator below. You can also view our solar panel cost guide for Waltham, MA.
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Solar Incentives in Waltham
If you're considering switching to solar energy, a variety of government incentives and tax credits can immensely reduce your project costs and expedite the return on your investment. These incentives mostly take the form of cash rebates, tax breaks and/or performance-based incentives. They can reduce how much you pay for installing solar panels by 26 to 50% in some cases. You can find out about the incentives available to you in the table below.
Name | Solar Massachusetts Renewable Target (SMART) Program |
Incentive Amount | (Base compensation rate + compensation rate adders - greenfield subtractor) * total kWh generated - value of energy generated |
Incentive Max | The ceiling price for the competitive procurement to determine the base compensation rate was $0.17/kWh. For systems 25 kW or less, the combination of a base compensation rate and adder may not exceed the base compensation rate for low-income projects less than or equal to 25 kW. |
Website | Visit here |
More Info | Click here |
Name | ITC |
Type | Tax Incentive |
Incentive Amount | 26% of installation cost |
Website | Visit here |
Name | Solar Renewable Energy Certificates (SREC-II) |
Incentive Amount | Varies, depending on market supply and demand |
Incentive Max | 2017 compliance year: Alternative Compliance Payment Rate is $350 per MWh (~$0.35 per kWh) |
Website | Visit here |
More Info | Click here |
Name | Renewable Energy Property Tax Exemption |
Incentive Amount | 100% exemption for 20 years |
Incentive Max | Not specified |
Website | Visit here |
More Info | Click here |
Name | Residential Renewable Energy Income Tax Credit |
Incentive Amount | 15% |
Incentive Max | $1,000 |
Website | Visit here |
More Info | Click here |
Name | Mass Solar Loan Program |
Website | Visit here |
More Info | Click here |
Name | Local Option - Energy Revolving Loan Fund |
Website | Visit here |
More Info | Click here |
Name | Alternative Energy and Energy Conservation Patent Income Tax Deduction (Personal) |
Incentive Amount | 100% deduction |
Website | Visit here |
More Info | Click here |
Name | Reading Municipal Light Department - Residential Renewable Energy Rebates |
Incentive Amount | MLP Solar Rebate Program: $1.20 per watt Residential Renewable Energy Rebate Program: $1.00 per watt |
Incentive Max | MLP Solar Rebate Program: 50% of cost or $30,000, whichever is less Residential Renewable Energy Rebate Program: $2,000 |
Website | Visit here |
More Info | Click here |
Name | Renewable Energy Equipment Sales Tax Exemption |
Incentive Amount | 100% exemption |
Incentive Max | None |
Website | Visit here |
More Info | Click here |
Environmental Impact of Switching to Solar in Waltham
There are lots of reasons to switch to solar power, like saving money on electricity bills and helping to lower your carbon footprint. But how much can installing solar panels actually help the environment? In a city like Waltham where commute times can be pretty long, installing solar panels can help offset some of your carbon dioxide emissions from being on the road a lot. Even though solar panel production releases carbon dioxide emissions, the panels make up for it by considerably lowering the amount of CO2 you would have released if you still used traditional energy. In Waltham, you can reduce your carbon footprint by 40 pounds a year with solar panels. As you can see, trading traditional energy for solar has so many other benefits outside of saving money. One of the main ones is that you can help save the planet too.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best Technology
The Green Panel
- Price-match guarantee
- Sleek, efficient, and durable solar panels
- Best solar battery on the market
- Some reported issues with customer service
- Customer service varies by local dealer
EcoWatch's Waltham, MA Solar Company Rankings FAQs
Which solar installation company is the best in Waltham?
The best local solar company in Waltham is Alternative Energy Store, Inc., with a rating of 5.00 stars.
What are the major advantages and disadvantages of switching to solar?
The biggest advantages of solar power are that it can decrease or, for some, completely erase your electricity bills, improve the value of your home and reduce your carbon footprint. The biggest disadvantages are that solar panels can be expensive to install, you may not save a lot if you don't use a lot of electricity and it doesn't work for all roof types and locations.
How long does it take to see a return on your investment after installing solar panels?
The average payback period for solar panel installation is about 9.1 years, but the exact period varies depending on the cost of electricity where you are, incentives and net metering programs.
What is the efficiency of solar panels?
Solar panel efficiency is the amount of energy from the sun that is converted into electricity. Most panels today have an efficiency rating of about 15 to 25%. If your panels are more efficient, you'll need fewer of them for your home's energy needs.
Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.
Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.