00/W installed and your electricity rate of $0. Because Section 25D expired on January 1, 2026, there is no federal tax credit for purchase, so the net cost is the same as the gross. solar calculator — enter your ZIP code and electricity bill, and it returns your recommended system size in kW, the number of panels, the roof area you need, the gross install cost, the annual savings, the payback period, the 25-year lifetime profit, and the CO₂ offset. Built on. You'll pay an average of $37,435 to install a 12. 65 kilowatt (kW) solar panel system in Secaucus, NJ before any available incentives. Using this figure, a typical 4. Significant Regional Variations: Solar costs vary. Enter your address and the cost of your most recent electric bill Our estimator shows how many solar panels your home needs We generate an online cost and savings estimate You choose how many solar companies send you an exact price by email or text Click on your state for solar panels cost. A solar installation cost calculator is an essential tool for homeowners, businesses, and developers considering solar panel systems.