Fueling with sunshine

At first, you think of putting solar panel on the top of your car. Sorry, but the amount of energy produced will not be enough and really far from a minimum required.

A more realistic approach, it is to install a photovoltaic (solar panel) system connected to the electrical network of your locality, at your residence or at the company. The advantage of this system is that when you produce, the unused energy is sent to the network. Your utility counts the energy consumed versus the energy produced, it is the net-metering option. See on self generation for Québec. Available elsewhere in Canada.

If you are doing 20000 km a year with your electric vehicle here is how we proceed to dimension your solar panel system.

Basic data for calculations:

  1. an electric vehicle consumes between 15 and 25 kWh per 100 km, take an average of 20 kWh / 100km for the calculations. If it's better, it's excellent.
  2. In southern Quebec, the average amount of sunshine is 128 days per year. The other day, producing your panels is weaker that's all.
  3. The summer we have 9 hours of production and winter 5 hours approximately, so an average of 7 hours.


  • 20000 km x 20 kWh / 100km = 4000 kWh for one year.
  • 4000 kWh / 128 days of sunshine = 31.25 kWh per day
  • 31.25 kWh per day / 7 h per day = 4.5 kW or 4500 Watts

Today, we can find 350-watts production panels and 95% efficiency inverters.

  • (4500 watts / 0.95) / 350 watts per panel = 13.5 panels

Yes, 14 solar panels are enough to ride with the sun.

For more information contact-us.

Ref.:HomePowerMag: Fueling with sunshine