• jettrscga@lemmy.world
    link
    fedilink
    English
    arrow-up
    5
    ·
    edit-2
    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.

    But there’s probably no reasoning with someone who decorated that room.

    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
      link
      fedilink
      English
      arrow-up
      3
      ·
      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