Solar Panel Calculator for Miami, FL
Estimate the cost, savings and payback of solar panels in Miami, FL, using local NREL sunshine data, Florida prices and electricity rates.
Your result
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Miami gets about 5.51 peak sun hours a day on a south-facing roof, so each kW of panels makes about 1,517 kWh a year. That ranks #33 of the 111 cities on this site. Output peaks in Apr and is lowest in Dec.
Sunshine in Miami by month
What an 8 kW system makes in Miami
| Month | Sun hours a day | Output | Bill savings |
|---|---|---|---|
| Jan | 4.96 | 960 kWh | $147 |
| Feb | 5.40 | 936 kWh | $143 |
| Mar | 6.14 | 1,176 kWh | $180 |
| Apr | 6.64 | 1,208 kWh | $185 |
| May | 5.85 | 1,072 kWh | $164 |
| Jun | 5.52 | 976 kWh | $150 |
| Jul | 5.80 | 1,056 kWh | $162 |
| Aug | 5.76 | 1,040 kWh | $159 |
| Sep | 5.22 | 928 kWh | $142 |
| Oct | 5.36 | 1,000 kWh | $153 |
| Nov | 4.94 | 912 kWh | $140 |
| Dec | 4.59 | 888 kWh | $136 |
| Year | 5.51 | 12,136 kWh | $1,859 |
Savings at 15.32¢ per kWh (Florida average), with every kWh credited at that price.
Cost and payback by system size
At $2.12 per watt, the Florida average, before incentives.
| System | Cost | Year 1 savings | Payback | 25-yr gain |
|---|---|---|---|---|
| 4 kW | $8,480 | $930 | 9.3 yrs | $13,418 |
| 6 kW | $12,720 | $1,394 | 9.3 yrs | $20,127 |
| 8 kW | $16,960 | $1,859 | 9.3 yrs | $26,836 |
| 10 kW | $21,200 | $2,324 | 9.3 yrs | $33,545 |
| 12 kW | $25,440 | $2,789 | 9.3 yrs | $40,254 |
How many panels you need in Miami
| Monthly use | System | 400 W panels |
|---|---|---|
| 500 kWh | 3.96 kW | 10 |
| 750 kWh | 5.93 kW | 15 |
| 1,000 kWh | 7.91 kW | 20 |
| 1,500 kWh | 11.87 kW | 30 |
| 2,000 kWh | 15.82 kW | 40 |
Covering 100% of a year's use at 1,517 kWh per kW.
Common questions
Is solar worth it in Miami?
At local averages an 8 kW system costs about $16,960 before incentives, saves about $1,859 in its first year and pays back in about 9.3 years.
How many peak sun hours does Miami get?
About 5.51 a day over the year on a south-facing roof at 20°, from 4.6 in Dec to 6.6 in Apr, according to NREL's PVWatts model.
How much does a 1 kW solar system produce in Miami?
About 1,517 kWh a year, or 126 kWh a month on average.
Is there a federal solar tax credit?
Not for homeowners who buy their system. The 30% Residential Clean Energy Credit ended for systems installed after December 31, 2025.
Sources
- NREL PVWatts V8 API (south-facing, 20° tilt, 14% losses, typical-year weather): https://developer.nlr.gov/docs/solar/pvwatts/v8/
- EnergySage, Solar panel cost by state (updated November 6, 2026): https://www.energysage.com/local-data/solar-panel-cost/
- U.S. EIA, Electric Power Monthly, Table 5.6.B (residential price, Jan–Aug 2026): https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_b