How long do solar panels last in Florida?

NREL's review of about 2,000 published degradation rates found a median loss of 0.5% a year. At that rate, panels still produce about 88% of their original output after 25 years, and our savings estimates assume that rate.

A multi-lab study that included UCF's Florida Solar Energy Center found newer panels averaged about 0.6% a year, and estimated that about a quarter of systems could fall outside their warranty limits over time, so the performance warranty matters. See the best solar panels for Florida.

Somewhat. NREL's fleet data found systems in the hottest climates lost about 0.88% of output a year, versus 0.48% in temperate ones, though that data covers larger commercial and utility systems. NREL also notes rooftop systems can degrade faster than ground-mounted ones.

Heat also lowers output on hot days. A panel's temperature coefficient tells you how much: Qcells' Q.TRON datasheets list about -0.28% to -0.30% per degree Celsius above 25°C. A lower number holds up better in Florida summers.

Look for panels tested to IEC 61701, the international salt-mist corrosion standard; severity level 1 is the test meant for installations near the sea. The racking and fasteners matter as much as the panels: the 2026 Florida Building Code adds corrosion-resistance rules for fasteners and connectors within 3,000 feet of a saltwater coastline, calling for stainless steel. Ask your installer what hardware they use if you're near the water.

• String inverters typically carry a 10 to 12 year warranty and are often replaced once over a system's life.
• Microinverters such as Enphase IQ8 carry a 25-year limited warranty in the U.S.
• Batteries such as Tesla's Powerwall are warranted to keep 70% of their capacity after 10 years.

See microinverters vs. string inverters and the best home batteries for Florida.

Usually 25 to 30 years or more. NREL says panels built today will probably last about 30 years, and its DuraMAT research group is working on modules that could last up to 50. In one of the longest records, First Solar thin-film modules tested at NREL since 1995 degraded about 0.5% a year and still made about 88% of their original output after 25 years.

Those modules were tested in Colorado, not Florida, where heat and humidity are harder on equipment. That's why the degradation figures above matter more than a single lifespan number.

• Product warranty: covers defects in the panel itself, such as failed connections or delamination.
• Performance warranty: guarantees the panel will still produce a set share of its rated output after a set number of years.
• Installer workmanship warranty: covers the installation, including roof leaks at the attachments. It comes from the installer, not the manufacturer.

SolarReviews notes reputable panel makers offer both a product and a performance warranty. A manufacturer warranty usually won't pay the labor to pull and replace a panel, so ask who covers labor. See what happens if your solar company goes out of business.

Florida's Department of Environmental Protection says solar panels aren't treated as electronic devices or universal waste in Florida. Panels can be recycled under a federal recycling exclusion, and a lab leaching test decides whether they can legally go to a regular landfill. DEP says recycling is the preferred route.

For a homeowner, that means old panels shouldn't go out with the household trash. Ask your installer how removal and recycling are handled when you replace or retire a system. See removing and reinstalling solar panels.

Standard panels are tested by firing 25 mm ice balls at 23 meters per second at 11 points. In Helene and Milton in 2024, FPL said less than 0.05% of about 16 million panels at its solar plants were damaged, none significantly; rooftop results depend on how the racking is attached. See can solar panels survive a hurricane.

Rain doesn't fully wash off pollen: an NREL study found output fell as much as 15% at peak pollen season, and cleaning recovered 5 to 11%. Saharan dust is a summer visitor: NOAA says the dust layer typically ramps up in mid-June and peaks from late June to mid-August. No Florida study has measured how much it cuts rooftop output, so treat it like pollen and watch your numbers. After a storm, stay off the roof, check your monitoring app, and call your installer if output drops.