More power is better right? 22kW is more than 7kW and that equals faster charging and that’s what you need.
Probably not, no. But why not?
Firstly, 7kW is a lot of power. Put into perspective, it’s a third of the total power going to your home. 7kW will add 20-25 miles of range, on average, to an EV. If your EV is sitting parked at your office all day you can expect it to add around 150 miles of range during the day. That’s more than enough for anyone. Especially with most commutes being below 10 miles.
Also, will you need more than 1 charger in the future? If so, think about this: your building has a set amount of electrical power and multiple 22kWchargers can soon use up all that is available meaning you will have just a few 22kW chargers that charge up ‘unnecessarily’ quickly.
With 7kW chargers you can have more chargers to share amongst employees and each of these will provide all the charging speed you need whilst not overloading your main electricity capacity.
22kW charging also requires EVs that are capable of charging at that speed (most, at the time of writing, cannot), and they require specific charging cables. Most non-premium EVs do not have these charging cables and so will charge no faster than 7kW from a 22kw charger.
So, 22kW charger is pointless and should be avoided? For most people, yes, but if you have vehicles that can charge at this rate and need to charge up frequently and you have sufficient supply then 22kW charging could be the answer.
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