• jettrscga@lemmy.world
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        6 months ago

        I don’t think bulbs use a whole lot of energy these days. A 10W LED bulb would cost $14 per year to run constantly (US pricing). An old 60W bulb would be $83 per year in comparison.

        Math:

        LED bulb power = 10W

        Electricity cost in US = $0.161 per kWh

        Running 1 bulb 24 hrs a day = 0.24kWh

        Price per day = $0.038

        Price per year = $14, running 1 bulb constantly

        • smeg@feddit.uk
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          6 months ago

          Huh, that’s actually more expensive than I’d have thought for a single bulb, even taking into account that you’d probably only be running it for a quarter of the time