The electricity price here is taken from my last ComEd bill. I think it's cheaper than in most places because it comes mostly from nuclear power.

 

Watts:		W
Electricity price:		$/kW-h
kilowatts per watt:		kW/W
On for this many hours per day:		h/day
On for this many days per year:		days/year
Total cost per year:		$/year