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My house uses about 500kWh/month, so a typical electric car parked on my driveway for 95% of the time can run it for several days. 20 million cars in the UK ar
by iso1210 5y ago
My house uses about 500kWh/month, so a typical electric car parked on my driveway for 95% of the time can run it for several days.
20 million cars in the UK are parked on peoples drives overnight. Vast majority don't need a full charge for the following day and people will be delighted to buy electric during the day for 10c/kWh and sell it overnight for 20c/kWh
If they were all electric with 60kWh of storage and can drop to 30kWh that's 600 GWh of storage. The UK's grid usage overnight is about 20GW from memory, so over 16 hours is in the order of 300-400GWh of overnight storage.
Assuming Germany has similar car and demand characteristics, as long as there's enough power during the day to cope with demand and recharging, there should be plenty of storage for overnight usage.
- AYBABTME 5y agoAre you heating up your house with 16.6KWh per day? Seems low for an electrically heated home. The other problem with using cars to feed the grid is that you need inverters large enough to do so in each house. That's not a cheap solution and it takes a lot of space.
- inglor_cz 5y agoSwitching the entire (Western?) car fleet to electric cars will be neither a quick nor a cheap process. It won't even be feasible on a timescale of less than some 20 years, because the necessary amount of natural resources just isn't mined in such volumes. You also have to massively upgrade the grid to handle such powerful currents. It is doable, yes, but I cannot concur with the OPs idea that it is cheap.