How coal required run 100-watt light bulb 24, We'll start by figuring out how much energy in kilowatt-hours the light bulb uses per year. we multiply how much power it uses in kilowatts, by the number of hours in. How electricity stuff ? - michael bluejay, How much electricity do household items use? last update: june 2013. the calculator at right will give you a rough idea of how much electricity something uses and how. How cost run light? - 420 magazine, Guess it depends on your cost and provider 2 1000w cost me about 80 bucks to run in veg.the system with fans and everything is about 150 to 200 a month.that does it. How cost run air conditioner, How much will it cost me to run an air conditioner? by david weedmark, demand media. Energy-efficient light bulbs: save, Let's first take a look at a typical home fixture for general lighting. let's say you currently have a 60-watt incandescent bulb and that you use it six hours a day.. How compact fluorescent bulbs cost?, Valerie writes: “someone in our family recently suggested that compact fluourescents weren’t worth it due to their high initial cost compared to. How electricity cost? - stretcher, Home home and auto air conditioning how much does electricity cost? mom just reminded junior for the umpteenth time to turn off the light in his bedroom when he leaves..