Almost every UK home has a single-phase electricity supply, and the maximum a home charger can draw from that is about 7kW. That's the speed most drivers choose, and it's enough to comfortably refill most batteries overnight. A 22kW charger needs a three-phase supply, which only a minority of homes have, and many cars can't even accept more than 7kW on AC anyway.
The catch with 22kW is twofold. First, many popular EVs are limited by their onboard charger to 7kW or 11kW, so you would pay for capability you can't use. Second, if your home isn't already three-phase, upgrading the supply can be a significant job that involves your network operator and can cost a lot more than the charger itself.
So the practical question isn't which is 'better' — it's whether your car can accept more than 7kW and whether your property has a three-phase supply. If both are true, a faster charger could make sense; otherwise 7kW is the sensible, cost-effective choice.
Not sure about your supply or your car's maximum AC rate? Tell us in the quote form and your installer can check your incoming supply during the survey.
Ready to get started? Get a free quote, or browse popular EV chargers and how installation works for more background. Not sure an EV will save you money? Try our free EV Money Calculator.