It is bit too derived unit. But on other hand it does make calculations pretty simple. Say 0.14 per kWh and then cost in month is simple multiplication 2.6300.1

It is bit too derived unit. But on other hand it does make calculations pretty simple. Say 0.14 per kWh and then cost in month is simple multiplication 2.6300.14 . Or a year is 2.63650.14...