Path-Q Solar

Would charging my EV at home make rooftop solar more financially valuable?

Answer

It can. Home EV charging creates an additional electricity load that solar may serve directly, particularly when charging can occur during solar-production periods. The financial value depends on avoided import prices, export credits, charging timing, and any electrical-upgrade costs.

Key points

  • Solar can offset electricity that would otherwise be purchased for home charging.
  • Scheduled daytime charging generally uses more solar directly than charging only overnight.
  • The EV's annual mileage and share of home charging determine how much additional load exists.

What it depends on

  • Annual driving and vehicle efficiency
  • Home-charging share
  • Charging timing and flexibility
  • Import and export rates
  • Charger and service-upgrade costs

Risks and trade-offs

  • An EV does not automatically improve solar value if most charging occurs away from home or after export periods.
  • Charging during expensive periods can increase bills if solar is unavailable and no control strategy is used.
  • A larger system may export excess energy or require equipment upgrades.

Information you may need

  • Annual mileage and charging records or estimates
  • Typical home-charging schedule
  • Vehicle and charger details
  • Electricity tariff and export treatment
  • Solar production estimate and upgrade costs

Your next step

What to do next

Compare annual EV charging cost with and without solar under realistic charging schedules, including the value of direct solar use and exports.

Path-Q

Find the right next step

Answer a few questions and we’ll narrow your options.

Loading…

Some details may depend on your location, installer, utility, incentives, regulations, or specific property.

SQ01136