my hydro bill is rated at 3 dif. rates. Starting around 43 cents per kWh to 55 cents per kWh. So for me, 100W bulb on 10hrs day, for 30 days equals
1 ( kwh per day ) X 30 ( days ) x 0.43 ( cents, cost per kwh )
total = 12.90 in hydro for 30 days
OR at 55cents = 16.50 in hydro for 30 days.
Never argue with an idiot, they will drag you down to their level then beat you with stupidity