Solar in Port St. John, FL
With Florida Power & Light (FPL)'s electricity at about 14.8¢ per kWh and 1,555 kWh of sun per kW, solar is worth it for a typical Port St. John home today: about a 10.8-year payback.
- Payback, typical home
- 10.8 yrsFlorida: 10.5 yrs
- 25-year net
- $39,606after paying $21,830
- Sun
- 1,555kWh per kW per year
- Electricity
- 14.8¢18% below U.S. average
A typical Port St. John home, by the numbers
| Utility | Florida Power & Light (FPL) |
|---|---|
| Electricity use | 1,111 kWh a month |
| Best-value system | 9.4 kW, about 22 panels, 14,617 kWh a year (110% of use) |
| Cost | $21,830 |
| First-year savings | $2,010 |
| Payback | 10.8 years |
| Exported power | 13¢/kWh (Florida Power & Light (FPL)) |
Cash purchase, no federal credit, 2.8% yearly rate increases. Run it with your own numbers.
Homes in Port St. John
- Owner-occupied homes
- 94%
- Single-family detached
- 93%
- Median home value
- $281k
- Median year built
- 1989
- Population
- 25,120
Census ACS 2020–2024.
Installers working in Port St. John
Public installation records for Florida don't name installers, so we can't rank local companies here. Browse installers in Florida.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Port St. John
Is solar worth it in Port St. John, FL?
For a typical home in Port St. John, solar is worth it at 2026 prices: a 9.4 kW system costs about $21,830 after state incentives, saves about $2,010 in year one and pays back in about 10.8 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Port St. John?
About 1,555 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 1% more than the Florida average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Port St. John?
Most homes in Port St. John are served by Florida Power & Light (FPL), at about 14.8¢ per kWh on average. Some areas are served by Duke Energy Florida.
How much do solar panels cost in Port St. John?
A fair cash price is around $2.45 per watt before incentives, so about $21,830 for a 9.4 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Titusville 10.8 yrs
- Rockledge 10.6 yrs
- Merritt Island 10.8 yrs
- Alafaya 11.1 yrs
- University CDP (Orange County) 11.1 yrs
- Oviedo 11.1 yrs
- Melbourne 10.7 yrs
- West Melbourne 10.9 yrs
- All of Florida
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.