Solar in St. Petersburg in 2026: Duke Energy, $2.07/W, and Florida's shortest payback

St. Petersburg is Duke Energy Florida territory, with 1:1 net metering and a $30 minimum bill, and it has the shortest estimated payback of all the cities we cover: 7.08 years at $2.07 per watt. But St. Pete is also the city where Helene and Milton left the most damaged roofs in 2024, and where Duke cut rates 25% in 2026. Both change the math.

Which utility serves St. Petersburg, and does 1:1 net metering apply?

Duke Energy Florida serves St. Petersburg and nearly all of Pinellas: about 524,000 customers in the county, per Duke. It applies 1:1 net metering under PSC Rule 25-6.065: each kWh you export is credited at the same value as one you buy, surplus rolls month to month, and at the end of the calendar year Duke pays what is left at its COG-1 rate (as-available energy), far below the full rate.

Tier 1 (up to 10 kW) pays no fee and needs no insurance; Duke checks that the system does not exceed 90% of your transformer or service drop capacity. And the $30 monthly minimum bill applies, panels or not. Details in Duke Energy: rates and net metering and net metering in Florida.

Heads up: Duke cut the 1,000 kWh bill by about $50 (25%) between January and June 2026 by removing the storm charge. A solar proposal built on a January or February 2026 bill shows you savings that no longer exist. Ask for it to be redone with a summer bill.

How much does a solar system cost in St. Petersburg in 2026?

EnergySage reports $2.07 per installed watt in Saint Petersburg with data from September 4, 2026, below the Florida average ($2.12/W).

The average system is smaller than in South Florida: smaller homes, many single-story from the 50s-70s. Prices and payment options in solar panel cost in Florida 2026. The 30% federal credit for purchases (25D) ended for systems placed in service after 12/31/2025; only 48E for lease/PPA continues through the end of 2027, captured by the third party. Confirm with your tax preparer.

How many sun hours does St. Petersburg get?

Saint Petersburg receives 5.2 peak sun hours per day on a fixed-tilt panel, per TurbineGenerator. A peak sun hour is one equivalent hour of full irradiance. A 10 kW system yields on the order of 52 kWh on an average day before losses.

What is the typical bill in St. Petersburg?

EnergySage reports $268 a month, 1,694 kWh and 16¢/kWh among people requesting solar quotes in Saint Petersburg in 2026. With Duke’s three cuts in 2026, a summer bill is the right reference. How to read each line: how to read your Duke Energy bill.

Roof and hurricanes in St. Petersburg: 2024 changed everything

Pinellas is not in the HVHZ, but the Florida Building Code requires engineer-stamped wind load calculations. What defines St. Pete today is 2024: Helene flooded entire neighborhoods near the bay and Milton tore roofs off across the peninsula. Many homes have a new roof (a good foundation for 25 years of panels) and many others have patches. A serious installer gets on the roof before quoting. If the roof has less than 5 years left, roof first. And in flood zones, the inverter and electrical panel go elevated. More in solar and hurricanes in Florida.

HOAs in St. Petersburg

Much of St. Pete is neighborhoods without an HOA. Where there is one, Florida Statute 163.04 prevents prohibiting solar collectors; the association can require architectural approval and set placement without reducing output. In historic districts, also check for preservation rules on the visible roof face.

Is solar subscription available in St. Petersburg?

Our subscription partner operates in the Tampa area with FPL, Duke and TECO, and St. Petersburg is Duke; we confirm coverage by address. The program: fixed monthly payment for 3 or 5 years, no credit, debt or lien, no upfront cost, 30% savings guaranteed by contract on the total bill including the minimum charge. Disqualifiers: tile or metal roof, roof with less than 4 years of life, heavy shade, bill under $100, less than 12 months in the home. Details in solar subscription: how it works.

When solar does NOT make sense in St. Petersburg

• Roof with unrepaired 2024 damage.
• Bill under $100: Duke’s $30 minimum bill plus taxes leaves little margin.
• Home in a flood zone with no plan to elevate the electrical equipment.
• Heavy shade from oaks on the south face.

What to check before deciding

• That the proposal uses a Duke bill from after March 2026.
• Your 12 bills and the roof condition after Helene and Milton.
• That the system does not exceed 90% of your service capacity.
• That savings subtract the $30 minimum bill and taxes.
• If you qualify for subscription, compare it against purchase with the same 12 months.