Solar + battery simulator
Interactive solar and battery simulator
☀️ Solar system
kWp
panels
Wp
= 25 panels × 400 Wp
kWh/day
≈ 12.6 MWh/year
Energy retained after charging and discharging.
%
Daily outcome
Demand self-powered
—
of daily demand
🔋 100% at — kWh battery
Grid import
—
kWh/day
Solar export
—
kWh/day
Solar generated
Battery charge
Grid export
Direct solar → load
Household demand
Battery discharge
Grid import
Peak stored
—
Lowest stored
—
End of day
—
Select either chart and use the arrow keys for hourly values.
Rome PVGIS 2015–2023 hourly average · south-facing · 30° tilt · 14%
system losses
Above zero allocates solar production · below zero shows how
household demand is supplied
Inputs recalculate both the hourly energy flows and the battery
cycle