Electrical costs for my pool

[JohnT]

JohnT, you would not have to double the cost for a 220 volt motor, as a 220 volt would use about half the amps. Therefore the cost would be approximately the same regardless of 120 or 220 volt motor.

Cheers

I was referring to the question that only gave amps and didn't mention whether it was 120 or 220. You are correct, but at a given current, 220 would essentially be double the power.