15 Best Solar Companies in Princeton, NJ (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Princeton based on:
Customer review scores- Service area for Princeton, NJ
- Company policies and services offered
- Accreditations and certifications
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Average Princeton homeowner saves $1,211/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Princeton
Thinking of going solar but still deciding on which solar panel installer would be the best one for your needs? Although it can be difficult to pick a solar company, the search will pay off because going solar has many good benefits. Because solar panels generate their own electrical power, they can vastly bring down your electricity bill each month, if not fully eliminate it. In fact, you could be looking at about $14,000 of savings over 20 years.
As you begin your search for the best solar companies in Princeton, you might notice that there are a great number of providers to choose from. So, we’ve accumulated a curated list of the top solar companies in the area.Read on to see our picks for the best solar companies in the city, or get connected to a certified solar company in your area right away by clicking the button 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 for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch Rankings for Solar Companies in Princeton
Exact Solar
Reliable Customer Support- Free Quotes
- Informative Resources
- Clear Pricing Policy
Limited information available on website
Services Offered
Permit Assistance- Cleaning and Maintenance
- Panel Installation
- Consultation
Solar X - Solar Maintenance Professionals
- Reliable Customer Support
- Clear Pricing Policy
- Prompt Service Delivery
- Informative Resources
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Panel Installation
- System Decommissioning
- Skilled Repairs
Impact Solar LLC
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Financing Assistance
- Panel Installation
- Battery Storage
MACK Solar and Roofing
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Skilled Repairs
- Financing Assistance
- Cleaning and Maintenance
Supreme Solar Services
- Reliable Customer Support
- Clear Pricing Policy
- Informative Resources
- Prompt Service Delivery
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Cleaning and Maintenance
- Skilled Repairs
- Panel Installation
Solar Pro
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Permit Assistance
- Consultation
Advanced Solar Solutions
- Informative Resources
- Free Quotes
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Kaitanna Solar Installation Company
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Panel Installation
- Battery Storage
- Financing Assistance
TerraSol Energies, Inc.
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
Public Service Solar, LLC
- Informative Resources
- Prompt Service Delivery
- Reliable Customer Support
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Permit Assistance
- Consultation
- Panel Installation
Reliable Power & Solar
- Clear Pricing Policy
- Reliable Customer Support
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Permit Assistance
- Panel Installation
- Skilled Repairs
- Financing Assistance
SI Solar
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
Advisor Solar
- Informative Resources
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Cleaning and Maintenance
Boundless, Inc.
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Panel Installation
Solar Medix
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- System Decommissioning
- Skilled Repairs
- Cleaning and Maintenance
- Consultation
- Panel Installation
Methodology: How We Ranked the Best Solar Companies in Princeton
EcoWatch's solar experts analyzed each solar company in Princeton based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Princeton
Below are some the criteria we examined specifically for New Jersey solar companies
- Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
- Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
- Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
- Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
- Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
- Availability (10%): The bigger the service area, the higher the company will score.
- Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
- Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.
The Cost and Benefits of Solar in Princeton
For many people considering switching to solar, the decision of which solar company to choose comes down to pricing.A few key factors that determine how much it will cost to install solar panels on your home and how much it could save you over time include:
- Choice of solar panels: The type of solar panels you choose will affect your total cost. High-efficiency monocrystalline panels are more expensive upfront but can also lead to more savings over the lifetime of your system. If you don’t need to maximize efficiency, you can go with a higher number of more affordable panels.
- average energy usage: The more power your home consumes on average and the steeper your current electricity bills are, the more benefits you’ll see from switching to solar.
- Incentives: The federal solar investment tax credit currently allows you to reduce your taxes by 0 of the project cost. Your state and city may also have various incentives that you can take advantage of. Additionally, you can save about $14,000 over 20 years on your utility bills, without incentives.
- Your current electricity bills: Solar panels can noticeably decrease, or entirely eliminate, your utility bills. In Princeton, you can save an average of $1,422 a month.
Though a solar panel system costs a sizable chunk of money upfront, it can save you thousands of dollars over the lifespan of your panels. The question of how much, though, depends on several factors, like the amount of daily direct sunlight available and your local electricity rates.
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Solar Incentives in Princeton
One of the great things about installing a solar panel system is receiving federal and potentially state incentives.These incentives typically take the form of cash rebates, tax breaks and/or solar renewable energy credits. They can reduce the cost of installing solar panels by 0, upwards of 50% depending on where you live. You can find out about the incentives you can take advantage of in our article on solar incentives
Environmental Impact of Switching to Solar in Princeton
One of the most compelling reasons to tap into solar power is to decrease your dependence on traditional energy sources like burning fossil fuels, which are damaging for the environment.You may be trying to figure out – how much does going solar help the environment anyway? In Princeton, where the energy generation could be cleaner, going solar can have a significant impact on the planet since solar power is an abundant source of clean energy.In fact, if you make the switch to solar power, you could reduce your carbon dioxide emissions by about 60 pounds each year. As you can see, investing in solar has so many other rewards besides saving money. One of the primary ones is that you can help save the environment 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 for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch's Princeton, NJ Solar Company Rankings FAQs
What is the most reputable solar panel installer in Princeton?
In Princeton, Exact Solar is the top local solar company. Our team of experts rates it 5.00 stars, so it's a solid choice if you're looking to install solar panels on your roof.
What are the advantages and disadvantages of solar power?
The advantages of solar power are that it can lower or, for some, totally erase your electricity bills, improve the value of your home and reduce your carbon footprint. The biggest disadvantages are that solar panels can be costly 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 buying solar panels?
Solar panels usually pay for themselves in about 16.3 years, but your solar payback period will vary depending on your utility costs. The more your typical electricity bill, the quicker your solar panel system will pay for itself.
How often do solar panels have to be replaced?
Although the average lifespan of solar panels is 25 to 30 years, that doesn't mean they are completely unusable. What this means is how much energy they produce will have decreased significantly after that point. You can choose to replace them once you've had them for that long or you can keep using them at a lower efficiency after that time.
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.