Hiring an electric car is currently a niche option. Even if you wanted to, you’d need to find a rental company with EVs in stock, hope they had one in the category you wanted and fingers crossed it wasn’t too expensive.
Avis in the UK for example has a single model - the Jaguar I-Pace on fleet - and it’s only available in its upmarket Prestige fleet. Sixt’s only EV is a Volvo XC40 Recharge, among 42 other cars.