In Kildare, Dublin and Meath they make up one in six and one in seven new car registrations.
There's a call for drivers in rural areas to get larger grants towards the cost of electric vehicles.
Former Environment Minister Richard Bruton believes the government needs to 'double down' on electrification.
Since 2020 just one in 29 cars sold in County Roscommon was electric.
In Kildare, Dublin and Meath they make up one in six and one in seven new car registrations.