Path-Q Solar
How should I account for an electric vehicle when sizing solar?
Answer
Add the vehicle's expected annual charging electricity to household use, then account for charging losses, driving distance, vehicle efficiency, and whether charging occurs at home.
Key points
- Estimate charging from miles or kilometers driven and vehicle consumption.
- Separate home charging from workplace or public charging.
- Consider future vehicle use and charging changes.
What it depends on
- Annual driving distance
- Vehicle efficiency
- Home-charging share and schedule
Risks and trade-offs
- A larger system may have limited value if charging occurs mostly away from home.
- Export value and charging timing affect savings.
Information you may need
- Vehicle efficiency
- Expected annual mileage
- Home charging percentage
Your next step
What to do next
Add estimated annual home-charging kWh to the last year's household consumption and request a design using that total.
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