See how much of your EV charging a home solar system covers.
The EV's yearly energy demand is divided into what roof output covers and what must still come from the grid. Matching solar production to EV charging shifts the car's energy cost toward a fixed investment, cutting the variable cost of driving.
Solar EV Offset
Offset % = solar output / EV energy needed x 100
Offset % = solar output / EV energy needed x 100 The EV's yearly energy demand is divided into what roof output covers and what must still come from the grid.
Matching solar production to EV charging shifts the car's energy cost toward a fixed investment, cutting the variable cost of driving.
This calculator takes 4 inputs: EV miles per year, EV efficiency, Solar system size, Output per kW. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.