Solar Panels in Denville, NJ: Cost, Payback & Savings
A typical 6.4 kW home solar system in Denville costs about $23,680 and pays for itself in about 10.9 years, saving roughly $39,387 over 25 years at New Jersey's average electricity price of 24.0¢/kWh.
Monthly solar production in Denville
Estimated output of a 6.4 kW south-facing roof system. Jul is the strongest month (884 kWh); Dec the weakest (402 kWh).
Solar production (kWh) Typical home use, 662 kWh/month
Solar payback calculator for Denville
Pre-filled with Denville's sunshine and New Jersey's average electricity price. Enter your own bill and an installer's price per watt to see your payback.
Leave export credit blank where the utility offers full net metering. Where exports earn less, solar used at home as it's produced is worth the full price and the rest earns the export credit.
How Denville compares
- Each kW of panels here produces about 1,285 kWh a year — 2% less than the New Jersey median and 6% less than the US median city (1,371 kWh).
- Payback ranks #177 of 223 New Jersey places we cover.
- Sunshine varies little across a state; electricity price, installed cost and how utilities credit exported power drive most of the difference between states.
Net metering, tax credits and incentives in 2026
New Jersey offers net metering: power you send to the grid is credited at or near the retail price, so every solar kWh is valued at 24.0¢ here.
There is no federal tax credit for buying home solar installed in 2026. The 30% Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so the costs and paybacks on this page include no federal credit.
New Jersey and local utilities may still offer rebates, performance payments, property-tax or sales-tax exemptions. Search the DSIRE incentives database for New Jersey and ask installers which programs they apply for you.
Frequently asked questions
Is solar worth it in Denville, NJ?
For a typical home, a solar system pays for itself in about 10.9 years and then keeps saving money. Over 25 years the estimated net savings are $39,387. Verdict: solid long-term investment. Your own payback depends on your roof, your bill and the quotes you get.
How many solar panels do I need in Denville, NJ?
A home using 662 kWh a month (the New Jersey average) needs about 16 panels of 400 W — a 6.4 kW system — to cover its annual use. Divide your own yearly kWh by 1,285 to get the kW you need.
How much do solar panels cost in Denville, NJ?
At 3.70 dollars per watt, a 6.4 kW system costs about $23,680 before any state or utility incentives. There is no federal tax credit for systems installed in 2026.
How much sun does Denville get?
Denville averages 4.7 peak sun hours per day, so each kilowatt of panels produces about 1,285 kWh a year.
Does New Jersey have net metering?
Yes. Power sent back to the grid is credited at or near the retail price (24.0¢ per kWh on average).
How much does electricity cost in New Jersey?
Residential electricity in New Jersey averages 24.0¢ per kWh, and a typical home uses 662 kWh a month (EIA).
Solar payback in nearby places
- Parsippany10.9 yrs
- Dover10.9 yrs
- Lake Hiawatha11.0 yrs
- Randolph10.9 yrs
- Morristown10.8 yrs
- East Hanover11.0 yrs
- Hanover11.0 yrs
- Florham Park10.8 yrs