Solar in St. Petersburg: What Homeowners Should Know
St. Petersburg sees an average of 5.6 peak sun hours per day, which is what ultimately determines how much electricity a rooftop system produces here. A standard 8 kW system (about 20 panels) generates roughly 13,082 kWh each year in St. Petersburg — and paired with Florida's local electricity rate of $0.114/kWh, that's where the savings come from.
At those numbers, a St. Petersburg homeowner saves about $124/month ($1,491/year). Against a $22,400 system cost (about $21,400 after Florida state incentives), that works out to a payback of about 14.3 years, after which the system produces essentially free power for two decades — an estimated $29,540 in lifetime savings. Note: the 30% federal tax credit expired at the end of 2025 for purchased systems, though a solar lease or PPA can still pass it through. The local grid is served by Duke Energy FL, whose net metering policy directly affects how much credit you earn for surplus power.
Cost & Savings Breakdown
Based on a standard 8 kW system in St. Petersburg
25-Year Savings Projection
Utility & Net Metering
Available Incentives
Choosing a Solar Installer in St. Petersburg
- 1.Get at least 3 quotes. Prices in Florida vary widely between installers — comparing bids on the same 8 kW system is the fastest way to avoid overpaying.
- 2.Confirm Duke Energy FL interconnection experience. An installer who regularly files with your local utility will move your permit and net-metering paperwork through faster.
- 3.Check licensing & the warranty. Look for NABCEP-certified installers and a workmanship warranty of 10+ years on top of the standard 25-year panel warranty.
- 4.Size for your actual usage. With 5.6 sun hours/day in St. Petersburg, make sure the proposed system matches your kWh history — not just your roof space.
Common Questions
How much does solar cost in St. Petersburg?
Solar in St. Petersburg, Florida costs approximately $22,400 for a 8 kW system, or about $21,400 after state incentives. The 30% federal tax credit expired December 31, 2025 for purchased systems, though solar leases and PPAs can still pass it through.
What is the solar payback period in St. Petersburg?
The estimated payback period for solar in St. Petersburg is 14.3 years for a standard 8 kW system, based on local sun hours of 5.6 hrs/day and a rate of $0.114/kWh.
Is solar worth it in St. Petersburg?
For most St. Petersburg homeowners, yes. With 5.6 peak sun hours per day and an electricity rate of $0.114/kWh, a typical system saves $1,491 per year and around $29,540 over 25 years after paying for itself in 14.3 years.
How many solar panels do I need in St. Petersburg?
A standard 8 kW home solar system is about 20 panels, producing roughly 13,082 kWh per year in St. Petersburg at 5.6 sun hours/day. Your exact size depends on your household's electricity use.
Does Duke Energy FL offer net metering?
Duke Energy FL offers Full Retail net metering. Full retail rate.