Is Solar Power a Good Investment? How to Calculate Your ROI
May 9, 2026How Many Solar Panels Does Your Home Need?
May 9, 2026Yes — for most NJ homeowners, a properly sized solar system can cover 100% of annual electricity consumption. The key word is “annual.” Solar produces more in summer and less in winter, but net metering balances it out over the year.
How Net Metering Makes It Work
On sunny days your panels produce more than you use. That excess goes to the grid and your utility credits your account. On cloudy days or at night, you draw from the grid and use those credits. At the end of the year, your net bill can be near zero.
Sizing for 100% Coverage
Start with your annual kWh usage from 12 months of utility bills. Divide by 1,100–1,200 (NJ average kWh per kW of solar per year). That gives you the system size in kW. A home using 12,000 kWh/year needs approximately a 10–11 kW system.
What About High-Usage Homes?
If you have a pool, EV, or electric heat pump, your usage is higher than average. That’s fine — you just need a larger system. EV owners typically add 3,000–5,000 kWh/year. Design the system around your actual usage, not a neighbor’s.
Do You Need a Battery?
Not necessarily, for bill coverage. With net metering you can reach $0 annual bills without storage. A battery is valuable for backup power during outages — but it’s a separate decision from whether solar covers your bill.
What Limits Full Coverage
Roof size, shading, or HOA restrictions sometimes limit how many panels you can install. If you can’t fit enough panels for 100% coverage, a partial system still makes sense — you’re just offsetting a portion of your bill.
Find Out What Solar Saves You in Your Home
Every home is different — roof angle, usage, utility rate, and local incentives all affect your numbers. Enter your monthly electric bill below for a free savings estimate. Jon reviews every submission personally and follows up within 2 hours.
Find Out If Your NJ Home Can Go 100% Solar
The answer depends on your roof area, sun exposure, and annual usage. Jon assesses every home for free — roof condition, shading analysis, system sizing — and gives you a specific percentage before you decide anything. Book a free call to get your home’s honest assessment.
