Because in theory, that replaces a fossil fuel car without creating a new demand on the grid. If the subsidised combo also includes a certain amount of home storage for the electricity generated when it's sunny (eg a bank of sodium ion batteries), that's even more likely to be grid neutral.
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"This drop in total energy use is due to the fact that electric machines like heat pumps, induction cooktops and EVs are so much more efficient than the gas and oil machines that we use today, and can do the same job with less energy."
#DominicThorn, 2024
https://www.rewiring.nz/watt-now/energy-use-in-new-zealand
This is true. However, efficiency sits at one end of a continuum, and at the other end is resilience.
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