Solar System & Battery Sizing for 3,700 kWh/Month in Florida, USA
Complete photovoltaic engineering breakdown for a 3,700 kWh/month (123.3 kWh/day) electricity profile in Florida, USA (5.4 Peak Sun Hours/day).
Technical Specification Table — 3,700 kWh/Month Solar System (Florida, USA)
| Monthly / Daily Electricity Consumption | 3,700 kWh/month (123.3 kWh/day) |
| Location Peak Sun Hours (PSH) | 5.4 hours/day (Florida, USA) |
| Required PV System Size (80% Performance Ratio) | 28.6 kWp DC |
| Number of Solar Panels (440W N-Type Bifacial) | 65 panels |
| Roof Area Required | 133.2 m² (1,434 sq ft) |
| Recommended Hybrid Inverter Rating | 25.5 kW AC |
| Recommended LiFePO4 Battery Storage (85% DoD) | 94.4 kWh Nominal (80.2 kWh Usable) |
| Estimated Annual Output | 45,096 kWh/year (~3,758 kWh/month) |
| Estimated System Turnkey Cost (Before Tax Credits) | $73,788 |
| Annual Electricity Bill Savings (@ $0.16/kWh) | $7,215/year ($601/month) |
Frequently Asked Questions
How many solar panels are needed for 3,700 kWh per month in Florida, USA?
With an average of 5.4 Peak Sun Hours per day in Florida, USA and an 80% system performance ratio, a monthly usage of 3,700 kWh (123.3 kWh/day) requires a 28.6 kWp solar array, which equals 65 standard 440W N-Type solar panels occupying 133.2 m² (1434 sq ft) of roof space.
What size solar battery bank do I need for 3,700 kWh/month?
To cover evening and overnight loads (65% of daily consumption at 85% LiFePO4 depth of discharge), a 94.4 kWh nominal (80.2 kWh usable) LiFePO4 battery bank paired with a 25.5 kW hybrid inverter is recommended.
How much money will a 28.6 kW solar system save in Florida, USA?
Generating approximately 45,096 kWh per year at an average local tariff of $0.16/kWh, the system saves $7,215 per year ($601/month) with an estimated payback period of 10.2 years.