Princeton, NJ Solar Panels
Solar Power in Princeton
If you’re a Princeton, NJ homeowner curious about solar panels, you’re not alone. New Jersey ranks 5th in the nation for residential solar installations — and it’s easy to see why.
With electricity prices rising 21% from 2020 to 2024, more Princeton residents are turning to solar to take control of their energy costs. This guide covers what Princeton homeowners need to know about going solar — from how it works to what it costs.
NEW JERSEY by the Numbers
How Much Do Solar Panels Cost in Princeton, NJ?
Based on real installations across Princeton and nearby communities like Plainsboro, Lawrence Township, and West Windsor, this calculator uses Palmetto’s local data to give you an accurate estimate of what solar installation would cost for your home.
System
- No upfront investment
- Palmetto handles all maintenance
- 90% Production Guarantee
- Comprehensive protection program included
Key Takeaways
- Princeton homeowners can save an average of ~$93,000 over 25 years with solar, thanks to rising local electricity rates and New Jersey’s strong solar incentives.
- New Jersey ranks 5th in the nation for residential solar and offers valuable protections like net metering, a sales tax exemption, and a property tax exemption.
- Princeton homeowners can go solar for as little as $130/month with a lease — no upfront cost, no maintenance, and a 90% production guarantee.
Princeton Electricity Prices
Electricity in Princeton, NJ costs more than most Americans pay — and rates have been climbing steadily since 2021.
New Jersey’s electricity rate reached 19.4 cents per kWh in 2024, up from 16.4 cents in 2021 — nearly an 18% increase. That’s also nearly 18% above the 2024 national average of 16.5 cents per kWh.
Solar panels generate electricity from sunlight, reducing how much power a home draws from the grid. For Princeton, NJ homeowners, that can mean greater predictability in monthly energy costs — even as utility rates continue to rise.
Solar panels typically last 25 to 30 years. Over that time, the electricity they generate offsets what you’d otherwise pay your utility — meaning the long-term value of solar is closely tied to how much rates rise ahead.
Price of Energy: New Jersey vs National Average
Princeton Area Utility Providers
Princeton homeowners are served primarily by PSE&G. Based on 2023 data, PSE&G’s residential electricity rate was 18.8¢ per kWh — above both the New Jersey state average of 17.70¢ and the national average of 16.0¢.
PSE&G’s rates reflect New Jersey’s dense infrastructure, high grid maintenance costs, and regional energy demand. These factors push rates above national norms, meaning Princeton residents typically pay more per kWh than most U.S. households.
When local electricity costs exceed state and national averages, the financial case for solar becomes more compelling. Many Princeton homeowners explore solar as a way to reduce their dependence on grid electricity and stabilize long-term energy costs.
Princeton Utilities Electricity Rates
New Jersey Solar Incentives
Princeton, NJ homeowners can access several solar incentives in New Jersey — including state, local, and federal programs — that can meaningfully reduce the cost of going solar.
New Jersey offers strong protections for solar owners, including net metering at full retail rates, a full sales tax exemption on equipment, and a property tax exemption so your home’s added value won’t raise your tax bill.
Recent federal policy changes have reduced some incentives for homeowners, making New Jersey’s state programs more important than ever. For those who lease solar through Palmetto’s LightReach program, Palmetto handles the applicable commercial tax credits and passes the savings through via lower monthly payments.
| Incentive | Type | Description | Source |
|---|---|---|---|
| New Jersey Net Metering | Net Metering | New Jersey requires investor-owned utilities to credit solar customers at the full retail electricity rate for excess energy sent to the grid, effectively eliminating electricity bills for many homeowners in Princeton. | Learn More |
| New Jersey Solar Sales Tax Exemption | Sales Tax Exemption | Solar energy equipment purchased in New Jersey is fully exempt from the state’s 6.625% sales tax, saving homeowners over $1,600 on a typical $25,000 solar installation. | Learn More |
| New Jersey Solar Property Tax Exemption | Property Tax Exemption | Solar installations in New Jersey are 100% exempt from property tax assessments, meaning the added home value from your solar system will not increase your annual property tax bill. | Learn More |
| Community Solar Energy Program (CSEP) | Rebate | New Jersey’s Community Solar Energy Program allows renters, homeowners with unsuitable roofs, and others to subscribe to off-site solar farms and receive credits on their utility bills, with guaranteed savings of 15% or more for low- and moderate-income customers. | Learn More |
| Federal Investment Tax Credit (ITC) for Battery Storage – Standalone | Tax Credit | Standalone residential battery storage systems (even without solar panels) qualify for a 30% federal tax credit under Section 48E, providing significant upfront cost savings for Princeton homeowners. |
Under New Jersey’s net metering policy, mandated by the NJ Board of Public Utilities (NJBPU), your utility must credit you at the full retail rate of electricity for every kilowatt-hour (kWh) your solar panels send back to the grid — up to 100% of your annual electricity consumption. This means the energy you export is worth exactly the same as the energy you buy, maximizing your solar savings and often reducing your electricity bill to near zero.
If your solar system produces more electricity than you consume over the course of a full year, any remaining excess is credited at the wholesale electricity rate rather than the retail rate. Net metering is available through New Jersey’s major investor-owned utilities, including PSE&G, Jersey Central Power & Light (JCP&L), Atlantic City Electric, and Orange & Rockland. The program is capped at 2.9% of each utility’s total annual kWh sales.
Net metering works automatically once your solar system is interconnected with your utility — no separate application is required beyond the standard interconnection process. Combined with the SuSI/SREC-II program, net metering makes New Jersey one of the most financially rewarding states in the country for residential solar owners, including homeowners in Princeton.
New Jersey provides a 100% sales tax exemption on the purchase of solar energy equipment for both homeowners and businesses. The state’s standard sales tax rate is 6.625%, meaning on a typical $25,000 solar installation, you avoid paying approximately $1,656 in sales tax — a straightforward, upfront reduction in the cost of going solar.
Eligible equipment includes anything that generates heating, cooling, electrical, or mechanical power through the conversion of solar energy, covering solar panels, inverters, racking, and related components. This exemption applies at the point of sale, so you simply won’t be charged sales tax when your installer purchases or bills you for the equipment.
To claim the exemption, your installer or supplier should be provided with a fully completed New Jersey Form ST-4 (Exempt Use Certificate). This is typically handled by your solar installation company as part of the standard purchasing process. Contact the New Jersey Division of Taxation for additional guidance.
Under New Jersey law (N.J.S.A. 54:4-3.113a et seq.), the added value that a solar energy system contributes to your home is completely exempt from property tax assessment. Solar panels typically increase a home’s market value, but in New Jersey, that increase is not factored into your property tax bill — saving the average homeowner an estimated $1,000 or more per year in property taxes.
The exemption applies to residential and commercial properties and covers solar photovoltaic (PV) and solar thermal systems. It is a permanent exemption for as long as the qualifying renewable energy system remains on the property, providing ongoing annual savings throughout the life of your solar installation.
To take advantage of this exemption, residents of Princeton should apply for a solar panel system certification and notify your local property tax assessor after your system is installed. The process is straightforward and is often assisted by your solar installer. This exemption stacks with other New Jersey incentives like the SuSI/SREC-II program and net metering to make solar ownership even more financially attractive.
The New Jersey Community Solar Energy Program (CSEP) makes solar accessible to residents who cannot install panels on their own property — including renters, condo owners, and homeowners with shaded or structurally unsuitable roofs. Participants subscribe to a share of an off-site community solar farm and receive credits directly on their regular utility bill for the electricity that share generates, reducing their monthly energy costs without any rooftop installation.
Low- and moderate-income (LMI) customers receive guaranteed savings of 15% or more on their solar subscription compared to standard utility rates, making this one of the most impactful programs for income-qualifying residents of Princeton. The program is open to meter customers of New Jersey’s investor-owned utilities, including renters, businesses, schools, and homeowners. New registrations opened in April 2025.
To find a community solar project near you, use the NJBPU’s Community Solar Project Finder tool available on the NJ Board of Public Utilities website. Community solar subscriptions are typically no-cost to join and can be cancelled if you move. The CSEP is administered under the SuSI program framework and is overseen by the NJBPU.
While the residential solar Investment Tax Credit (Section 25D) has been eliminated, standalone battery storage systems installed in 2026 may still qualify for a 30% federal tax credit under the commercial clean energy provisions (Section 48/48E), depending on how the system is structured and owned. This credit applies to the full installed cost of the battery system — even when it is not paired with rooftop solar panels — making battery storage more affordable on its own.
For a typical residential battery system costing $10,000–$15,000, a 30% tax credit translates to $3,000–$4,500 in direct federal tax savings. The credit is claimed on your federal income tax return for the year the system is placed in service. Eligible batteries must have a capacity of at least 3 kilowatt-hours (kWh) to qualify.
Because the tax credit landscape for 2026 is evolving following recent federal legislation, it is strongly recommended that you consult a qualified tax professional to confirm your eligibility and the correct credit mechanism before installation. When combined with New Jersey’s upcoming GSESP Phase 2 incentives, battery storage in Princeton is poised to become significantly more affordable in 2026.
Ready to start saving with solar?
Speak with a Palmetto solar expert to find out exactly how much you can save with New Jersey incentives.
Get a Free QuotePrinceton Solar Irradiance
Solar panel production varies throughout the year based on daylight hours, weather patterns, and sun intensity. Understanding how seasons affect your solar system helps set realistic expectations for your investment.
Princeton, NJ enjoys four distinct seasons and roughly 206 sunny days per year. Despite cold winters, solar panels perform well year-round — efficiency often improves in cool, clear conditions.
Solar Production in Princeton by Month
What Can Your Solar System Power?
Summer Production (July)
In July, your 10 kW system could power:
- 3.6 average homes (15 kWh/day per home)
- or Run central AC for 18 hours AND power all other appliances
- or Fully charge 5.4 Tesla Model 3 electric vehicles
Winter Production (December)
In December, your 10 kW system could power:
- 2 average homes (15 kWh/day per home)
- or Keep your home heating system running for 15 hours
- or Fully charge 3 Tesla Model 3 electric vehicles
Annual Production
Over a year, your 10 kW system could:
- Offset 10 tons of carbon dioxide emissions
- or Equal the environmental benefit of planting 175 trees
- or Save approximately $4,234 in electricity costs
Want to know exactly how much solar can power your home?
Get a personalized solar analysis based on your actual home, energy usage, and roof characteristics.
Get My Custom EstimateSolar Panel Systems in Princeton
We’ve mapped every solar installation in Princeton, NJ so you can see just how many of your neighbors have made the switch. Explore the heatmap below to discover which neighborhoods and communities are leading the way toward cleaner, more affordable energy.
Leasing Solar Panels
Princeton homeowners served by PSE&G have access to a Power Purchase Agreement (PPA) through Palmetto’s LightReach program. With a PPA, you pay for the electricity your solar panels produce at a fixed rate per kilowatt-hour (kWh) — rather than paying a large upfront cost for the system itself. Because solar panels produce more energy in summer than winter, your monthly solar bill will naturally fluctuate with the seasons, but your annual savings remain consistent.
Compared to buying a system outright with cash, a PPA removes the need for a large upfront investment. You also avoid the responsibility of system maintenance — Palmetto owns the panels and handles any repairs or performance issues, backed by a 90% production guarantee. That means you get the benefits of solar without the headaches of ownership.
If you’d like to understand how a PPA compares to other financing options, Palmetto’s buy vs. lease guide walks through the key differences in plain language. For Princeton homeowners looking for a simple, low-risk way to go solar, a PPA is worth a close look.
Go solar without the investment
With LightReach, there are no investment costs to recoup, loan payments to manage, or maintenance needs to take on. As soon as your panels are active, your solar savings are too!
Learn MoreFrequently Asked Questions
Yes, solar makes strong sense for Princeton homeowners. New Jersey ranks 5th in the nation for residential solar, and with local electricity rates at 19.4¢/kWh — nearly 18% above the national average — Princeton residents have a compelling financial case. The average homeowner can save approximately $93,000 over 25 years.
Upfront cost doesn’t have to be a barrier. Palmetto’s LightReach solar lease lets Princeton homeowners go solar with no money down, starting at around $130/month, with savings beginning from day one. New Jersey also offers net metering, a sales tax exemption, and a property tax exemption to further improve the value of going solar.
Yes, Princeton, NJ homeowners have access to 1:1 net metering through PSE&G, the primary utility serving the area. Under this policy, for every kilowatt-hour (kWh) your solar panels send back to the grid, you receive a full retail-rate credit on your bill. Excess credits carry over month to month.
Once per year — on your anniversary month (defaulting to your Permission to Operate date) — any remaining unused credits are paid out at the avoided cost rate (approximately 3–5¢/kWh), and your account resets. You may change your anniversary month once by contacting PSE&G.
Yes, solar panels can increase your home’s value in Princeton, NJ. According to a Zillow study, homes with solar panels sell for approximately 4.1% more than comparable homes without them. For a home at Princeton’s median value, that translates to a meaningful boost.
New Jersey also offers a solar property tax exemption, meaning the added home value from your solar system won’t increase your annual property tax bill — so Princeton homeowners get the full benefit of increased resale value without the added tax burden.
With Palmetto’s LightReach lease, Princeton homeowners can go solar for as little as $130/month with no upfront cost. Palmetto owns and maintains the system, so there’s nothing out of pocket to get started.
For those who prefer a cash purchase, a typical 9.78 kW system in Princeton runs around $28,916. Note that the federal 30% residential solar tax credit is no longer available following the Big Beautiful Bill. Use the calculator above for a personalized estimate.
For Princeton homeowners, solar can be financially worthwhile from day one — especially with a lease. With Palmetto’s LightReach program, your monthly lease payment is typically less than your current electricity bill, so you start saving immediately with no upfront investment.
Princeton residents also benefit from some of the highest electricity rates in the country — 19.4¢/kWh — and New Jersey’s strong net metering policy. Over 25 years, the average Princeton homeowner can save approximately $93,000, making solar a sound long-term financial decision.
Palmetto Solar is a top choice for Princeton, NJ homeowners. As a national company with a local focus, we’ve completed 612 installations across New Jersey since 2020 — and we know the Princeton market well.
We offer some of the most flexible financing options available, including our LightReach lease starting at just $130/month with no upfront cost. Our trusted install network, 90% production guarantee, and hands-on customer support make going solar straightforward for Princeton residents.
Palmetto’s LightReach is an all-inclusive solar lease — one monthly payment covers the system, installation, monitoring, maintenance, and a 90% Production Guarantee. There is no upfront cost. For a typical 9.78 kW system in Princeton, NJ, the estimated monthly payment is approximately $130/month, based on NJ’s production ratio of 1,104 kWh/kW/year at $0.145/kWh.
Because Palmetto owns the system, it claims the commercial Investment Tax Credit (ITC) and passes those savings to you through lower monthly payments — an advantage over cash purchases, where the residential ITC was eliminated. Most Princeton homeowners start saving from day one.