Solar in Key West, Florida

At a glance

Typical electrically heated home, 1100 kWh a month, best-case figures with the range shown. Sources.

Who sends your bill

At the center of Key West the service-territory layer shows Keys Energy Services; Florida Power & Light serves parts of the surrounding area. Boundaries are coarse at town edges, so your bill is the final word; the utility finder checks any address.

What the sun does in Key West

• A south-facing roof at a 30° pitch makes about 1,661 kWh per kW a year, 11% above the Florida average.
• March is the best month at about 161 kWh per kW; June the worst at about 124. Spring is the strongest season and summer afternoons bring clouds, so the net-zero size is set on the whole year, not on the hottest month, and how your utility credits exports decides what the summer surplus is worth.
• Roof direction and pitch change the yield by a quarter or more; the estimate reads your actual roof from satellite imagery and fills south-facing planes first.
• Air conditioning roughly doubles an August bill compared with February, so a single bill is annualized with Florida's monthly load shape rather than multiplied by twelve.

Questions Key West homeowners ask

How much do solar panels cost in Key West?

For a electrically heated home using about 1100 kWh a month, a net-zero system of about 7.9 kW costs roughly $17,704 to $21,638 installed at current Florida cash prices, before any incentive. Larger homes and electric heat need bigger systems; your address gives a real figure in about a minute.

How long does solar take to pay for itself in Key West?

About 8.7 to 11.7 years for that typical home on Florida Power & Light rates, assuming electricity prices rise 2.7% a year. Florida Power & Light's own rules (fixed charge, net-metering credits) are built in. Figures use Florida Power & Light, which gives the better payback of the utilities serving the Key West area (Keys Energy Services: about 17 years). Your bill says which one you are on.

Which utility serves Key West?

At the city centre the service-territory layer shows Keys Energy Services; Florida Power & Light serves parts of the surrounding area. Boundaries are coarse at town edges, so your bill is the final word.

Does solar work through Key West's summers and storm season?

Yes, with a seasonal shape: March makes about 161 kWh per kW and June about 124. Summer is when the system earns most of its keep: production peaks in the same months as air conditioning, so more of it is used on site. Hurricane wind loads are an engineering and insurance question for the installer, not a production one.

What incentives apply in 2026?

Florida exempts solar equipment from sales tax and keeps the value it adds off your property-tax bill, and both are already in these figures. Business-owned systems, including rental property, qualify for the 30% federal investment credit (Section 48E) and bonus depreciation when placed in service by the end of 2027; tax-exempt owners receive the 30% as cash. Not tax advice.

On the map

Nearby: Naples, Homestead, Doral, Hialeah, Miami, Cape Coral. All Florida cities.