Update on Prius Charging Economics

In my previous post, I talked about how charging the Prius Prime at home versus filling up its gas tank. Well we are in a very special time right now with gasoline prices hovering between $1 / L to $1.05 / L. The electricity rate has also changed to a flat $0.128 / KWh to be applied around the clock until October 31st, 2020.

I figured that I provide an update with these new conditions. With the lowered gasoline prices, the 4.4 L / 100 Km milage rating of the Prius Prime, it would now yield 22.7 km / $ assuming $1 / L as our cost.

Hidden Electrical Costs

When we use the per KWh charge of $0.128 for time of use; $0.0098 for delivery; $0.0039 for regulatory; yielding a total of $0.1417 / KWh, our Prius plugin yields (40 Km / 8.8 KWh / $0.1417) 32.078 km / $ when using the battery alone as an EV.

Clearly 32 km is still better than 23 km. Therefore, it is still better to charge the Toyota Prius Prime at any time of the day now because the electricity cost is the same around the clock.

I left out the monthly delivery and regulatory flat rates because I have to pay that regardless whether I’m charging the Prius or not. Also this calculation does not consider additional savings when charging due to the current Ontario Electricity Rebate that is in effect.

I hope you find this up to date information useful.

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