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Van Snyder's avatar

IEEE Spectrum published a good piece entitled "The EV Transition Explained."

https://spectrum.ieee.org/files/52329/The%20EV%20Transition.final.pdf

Some take-aways:

A typical residential 37.5 kW distribution transformer supports 15 households, assuming 2 kW average demand. Replacing a gas furnace and water heater with heat pumps draws 4-6 kW and reduces end-to-end thermal efficiency from 90% to 30%. One L2 EV charger draws 12-19 kW. Transformers are designed for passive cooling at night. With EV's coming home and charging at night, transformer lifetimes will be reduced from 30-40 years to about three years. Distribution transformers used to cost $3,000-$5,000. Now they cost $20,000. They'll need to get bigger, too, meaning that 150 million power poles will need to be replaced. 5.5 million miles of power lines will need to be upgraded to handle larger loads. There are no American companies that make substation-size transformers.

High speed public EV charging stations draw 150-350 kW, and cost $450,000-$725,000. They need nine customers per day to break even, which will be difficult in rural areas. Volta is already in financial trouble. 20% of public chargers in San Fran Sicko are in non-working condition. Software in public chargers is already a target for hackers.

31.4% of households are in multi-family dwellings. 40% of households have secure off-street parking. California wants to replace suburbs with more stack-and-pack housing, to concentrate racism, drugs, and crime. Where will EVs be charged?

No system engineering is being done in the Greta Green Energy Transition.

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Prisoner of Planet Moron's avatar

Thanks, Robert, for a well-informed commentary. Biden will need to pry my ICE out of my cold, dead hands ...

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