When I hear this objection to EVs my (UK centric) reply is that our grid can currently handle all domestic properties having a 7kW electric cooker and can manage them being on simultaneously during off-peak hours. A single phase wall connector is also 7kW and normally used off-peak.
Average daily mileage results in about 10kWh consumption or about 90 minutes charging per car meaning even a four car household should be able to charge during the most off-peak times.
Yes, net electricity consumption increases, but the power supply capacity has existed for many years.
Total non-issue, basically.
Off-peak isn’t what it used to be.
Exhibit 1: Live map of electricity consumption and production sources (pretty accurate for the EU, don’t know about their data for the rest of the world):
Live 24/7 CO₂ emissions of electricity consumption
Exhibit 2: EU spot electricity pricing for next day delivery (updated around noon EU):
Market Data | EPEX SPOT
I’m most familiar with the situation in Belgium. The biggest part of our electricity production is nuclear, and needs to be replaced by something else in the coming years as we’re closing our nuclear power plants. The ‘something else’ will be import from other nearby countries, natural gas and a huge amount of new wind and solar capacity.
Even with the bulk of our electricity from nuclear energy we see huge swings in electricity pricing. We now typically have negative pricing during weekends and holidays. On workdays, we see the lowest pricing from 12h00 to 18h00. Off-peak charging is changing from charging during the night to charging during the afternoon.
Given the need for far more (unpredictable) renewable energy production than what we have now, I think it’s clear that we’re going to have near free charging for EV’s, because EV’s are the only things we have that can shift their electricity consumption.
Stationary home batteries can help a bit, but the sizes are typically an order of magnitude lower than EV battery sizes: 10kWh versus 100kWh. But stationary home batteries are expensive compared to EV’s: if you’d want 50kWh of storage, it would be cheaper to buy a car with a 50kWh battery and V2G support.
Tesla may not be supportive of the V2G idea because it places too much stress/wear on the batteries, but hopefully that argument expires with the availability of 1 million mile batteries. I’d buy any Tesla with V2G support immediately.
Note that the mentioned spot pricing is the pricing for the energy component of the electricity price. You still need to pay the transport/network costs. Where I live, the network cost price structure is changing from a per kWh pricing to peak capacity pricing. I.e. if you need 11kW peak (because you charge your car at that speed) you pay 11x50 euro yearly (independent of the kWh used). So the grid operators currently want you to spread your electricity usage during the day so that they need less peak capacity (actually so that they don’t need to increase peak capacity as much by giving a financial incentive to treat peak capacity as a scarce resource).
With the foreseen evolution, I expect extra financial incentives by grid operators and electricity producers for the right to control when your car charges, because it gives them a massive fine grained resource to balance grid load, production and consumption. There’s already a company in Belgium/The Netherlands (Jedlix) that gives you 1 cent/kWh for the right to control when your Tesla charges (and it’s always at the cheapest time).
EV’s are not a problem for the grid, they’re the saviours of the grid.