On 3/21/21 10:30 AM, Jay Summet via EV wrote:
Charge up a 100 kWh EV at the 0.3 kWh site in the day, drive it to the other site and discharge it at night?
That would be semi-viable if I had an EV with decent V2H/V2G (I'm VERY excited about the new VW offering!). With Teslas, you are limited to 1-2kw going through 12v and that goes through a very inefficient inverter to 240vac (in my testing). I've not very seriously considered hauling (free) SuperCharger energy home. But, that's a 30 mile trip times two. Not to mention more than an hour out of my life and 15-20 kwh for the transport.
With a car with decent V2G/V2H (maybe a VW), I envision charging at ~10kw on the $.03 meter, then discharging at about 2-4kw at the $.06 meter for about 24 hours. At least during the night when I am paying $.10/kwh. I can use a PowerWall to avoid pay $.10 but the benefit is only $.04/kwh and would take far longer than the life of the PW to pay for the PW. With $.03 energy, the differential would be $.07.
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