Simple… weight based addition to your your registration fee. How much does your EV weigh?
EV owners already pay an additional weight fee.
Any fair way has to be mileage based. Currently if you own an EV and drive less than 12,000 miles per year you get screwed. Equally, if you drive more than that you don’t pay your share.
If you live in Seattle, you get double screwed because of the local extra tax. It adds up to a few hundred bucks more per year to own an EV.