The costs to install an EV charger at home depends on the type of wallbox charger you choose and the installation costs which will vary depending on your home and situation. The wallbox chargers themselves increase in cost the more power they supply. A 3kw electric car charger will be cheaper than a 7kw charger. It is best to find a reputable and experienced installer like The Oxfordshire Electrical Company and get a quote for a charger than suits your exact needs.