Florida Solar Panel Performance Benchmarks

A 6kW solar system in Florida produces between 8,900 and 9,900 kWh per year. South Florida (Miami area) averages about 9,700 kWh for a 6kW system. Central Florida (Orlando, Tampa) runs around 9,400 kWh. North Florida (Jacksonville, Tallahassee) comes in near 8,900 kWh. Florida's summer rainy season suppresses July-August production more than most homeowners expect; the state's best solar months are April and May, not July.

Monthly Production Benchmarks: Florida 6kW Reference System

Expected monthly production for a south-facing, 30-degree tilt, 6kW system. Derived from pvlib simulation using Open-Meteo ERA5 historical weather data, Orlando as the statewide reference location.

Month	Expected Production (kWh)	Notes
January	534	Short days, but mild temperatures
February	610	Steady recovery
March	838	Spring spike
April	962	Best month in many years
May	1,022	Peak spring output
June	966	Rainy season starts, afternoon storms
July	938	Summer rainy season peak; cloud cover trims output
August	910	Still rainy season; heat suppression
September	868	Rain tapers; recovery begins
October	800	Strong fall production
November	622	Seasonal drop
December	490	Lowest month
Annual Total	~9,560	Orlando-area 6kW reference

(Source: pvlib physics modeling, Open-Meteo ERA5 weather data)

Annual Benchmarks by System Size and Florida Region

System Size	South Florida (Miami)	Central Florida (Orlando)	Tampa Bay	North Florida (Jacksonville)	Panhandle (Pensacola)
4 kW	6,480	6,370	6,300	5,940	5,880
6 kW	9,720	9,560	9,450	8,910	8,820
8 kW	12,960	12,750	12,600	11,880	11,760
10 kW	16,200	15,930	15,750	14,850	14,700
12 kW	19,440	19,120	18,900	17,820	17,640

South Florida specific yield: ~1,620 kWh/kW/year. Central FL: ~1,593. Tampa: ~1,575. North FL: ~1,485. Panhandle: ~1,470.

(Source: pvlib physics modeling, Open-Meteo ERA5 weather data, 2015–2024 averages)

Florida Climate Zones and Performance Ratio Targets

Florida's solar climate is more uniform than most states, but the summer rainy season creates a distinctive seasonal pattern. Performance ratios below 0.78 warrant investigation.

Climate Zone	Representative City	Annual Specific Yield	Expected PR Range
South Florida	Miami, Fort Lauderdale	1,580–1,660 kWh/kW	0.80–0.88
Central Florida	Orlando, Lakeland	1,540–1,640 kWh/kW	0.78–0.86
Gulf Coast	Tampa, Fort Myers	1,520–1,630 kWh/kW	0.78–0.86
North Florida	Jacksonville, Gainesville	1,440–1,540 kWh/kW	0.76–0.84
Florida Panhandle	Pensacola, Tallahassee	1,420–1,530 kWh/kW	0.76–0.84

Learn more about how these benchmarks are calculated at /resources/methodology.

What Affects Florida Solar Output

• Summer rainy season: Florida receives most of its rain June through September. Afternoon convective thunderstorms occur nearly daily in July and August in central and south Florida. These afternoon storms don't eliminate solar production. Morning hours are often clear, but they cut peak afternoon output significantly. The effect: July produces less than May in most Florida locations, a pattern opposite to states like Arizona or Colorado.
• Hurricane season (June-November): Hurricanes and tropical storms cause acute production drops during storm passage, typically lasting one to four days per event. In a year with a direct hit, a Florida system may lose 1–3% of annual production to storm-related downtime. After any major storm, inspect panels for physical damage and track whether production returns to pre-storm levels.
• Humidity and soiling: Florida's high humidity keeps panels cleaner of dust than dry-climate states, but organic soiling (pollen, mildew, bird droppings) accumulates faster. Annual soiling losses in Florida typically run 2–4%, lower than desert states but still meaningful.
• Flat roofs: Many Florida homes have low-slope roofs. Systems installed at 10-degree tilt rather than 30 degrees lose about 3% of annual production but accumulate more soiling. The tradeoff matters in Florida where humidity accelerates organic growth on low-tilt panels.

Frequently Asked Questions

Q: What should a 6kW solar system produce per month in Florida?

A: The Florida average runs about 797 kWh/month. May is typically the peak month at around 1,022 kWh, not July or August, which are suppressed by afternoon rain. December and January drop to 490–534 kWh. A system consistently producing below 700 kWh in April or May deserves investigation.

Q: Why does my Florida solar system produce more in spring than in summer?

A: Florida's rainy season (June-September) brings afternoon thunderstorms that reduce peak-hour production. May has the longest days and the clearest skies of the year in most of Florida. July has similar daylight but significantly more cloud cover. This seasonal inversion is normal for Florida systems.

Q: Does Florida's humidity affect solar production?

A: Humidity itself has a small positive effect (slightly better light diffusion) but primarily increases soiling from biological growth. The net effect is roughly neutral compared to a dry climate with more dust. The larger humidity impact is indirect: Florida's rainy season brings the cloud cover that suppresses summer production.

Q: How do I get an independent benchmark for my Florida solar system?

A: A physics-based benchmark uses hourly weather data at your address to calculate what your system should have produced, then compares it to what your monitoring shows. Standard apps track actual output only. Learn how proper benchmarks work at /resources/methodology.

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Data: pvlib physics modeling + Open-Meteo ERA5 weather data | Last updated: 2026-04-06 | Solar Benchmark