Quote:
Originally Posted by retiredguy123
I have a 50-watt equivalent LED light bulb in my living room table lamp, that actually only uses 7 watts of power. I used to turn off the lamp whenever I left the house. But, I recently calculated that I could leave the lamp on for 12 hours every day and it would only cost $2.75 in electricity for the entire year. So, I no longer turn off the lamp when I leave the house. It still feels weird though and my parents are probably turning over in their graves. Do you always turn off LED bulbs when you leave a room or the house?
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7 watts x 24 hours x 365 days = 61320 watts per year
61320 watts === 61.320 kilowatts per year
61.320 kilowatts x $0.15 per kw = $9.20 per year (if on 24 hours)
Same math for 12 hours = $4.60 per year
I use $0.15 per kw because I also include base fees and other fees. Take total bill and divide by total kw for that number.