In all the datacenters i've used in the US they don't charge per kwh, they charge per max amperage, so you can get dual 15A 240VAC or dual 45A or whatever you n

In all the datacenters i've used in the US they don't charge per kwh, they charge per max amperage, so you can get dual 15A 240VAC or dual 45A or whatever you need, and that's baked into the cost. Each rack has a power budget due to cooling concerns, etc. On the one hand, the bill is always the same amount, regardless of power consumption. On the other hand, you gotta make sure you use your power budget or you're wasting money.