Just a suggestion....
My Coleman puts out a rough 1920 watts. WOW!
Power consumption: 1920 watts
Hours of use per day: 8 hours per days
1 kilowatt-hour (kWh) cost $0.15 per KWH
Electricity cost per day: $2.304
Electricity cost per month: $69.12
Electricity cost per year: $840.96
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So I went to Home Depot. Bought a 5,000 BTU window air conditioner For $99.00
It Kicks Ass!. It will freeze your hiney off lol. This is what I spend for my window AC unit for 8 Hours......
Power consumption: 500 watts
Hours of use per day: 8 hours per days
1 kilowatt-hour (kWh) cost $0.15 per KWH
Electricity cost per day: $0.60
Electricity cost per month: $18
Electricity cost per year: $219
Big Differnce Eh?
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Here is the Electric Bill Calculator. Just put in the watts of any electrical device, hours of use and the cost per KWH. That's it!.... Way to simple.
Electricity bill calculator | Energy cost calculator