That could create a new problem with people waiting around until it charges to 100% since it's billed per energy delivered.I think the solution would be that EA be petitioned to simply change their logic to charge based on the actual rate delivered, it can't be that difficult for them to calculate how long a charge session spends in each tier - like Tesla superchargers. That would be the fairest way to charge all vehicle drivers as it represents closest the actual value of energy delivered.