EV's saving the planet?, page-19

The real question for mass solar powered EV charging is how many 'charges' per day can you get from the sun using the area above a car?

Suppose we had a generous 6m x 4m charging bay, round it up to 25 square metres (which @quokka2 reckoned a petrol pump real estate uses)

According to https://www.pveducation.org/pvcdrom/properties-of-sunlight/average-solar-radiation, Darwin gets about 6kWh /day per sqm, so that's about 150kWh for the 25 sqm, or about 2-3 cars per day. At 60c per kWh*, if fully sold, that parking bay would return about $90 per day.

Melbourne is about two thirds of that, so maybe 1-2 cars per day.

I'm struggling to see return on investment if that 25 sqm of urban infrastructure is used purely for charging cars.

Home rooftop solar is cost effective because the area under the panels is already put to effective use, i.e. a family home.

Solar farms can be cost effective because of 1. economy of scale; 2. they're usually on rural land that has lower value; and 3. they usually have tracking systems that get the most out of the incoming solar radiation.

* According to https://www.whichcar.com.au/car-advice/how-much-does-it-cost-to-charge-an-electric-car, NRMA charge 54c/kWh