this post was submitted on 30 Apr 2025
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Sure this was a thing back in the day with incandescent lightbulbs - but like, you can leave a 10W bulb on for like 4 days straight for the price of ~1kWh (~20c USD here in Australia), right?
Night lights are like half a watt. You can leave a 0.5W bulb on all night (let's just say 12 hours), 365 days per year, and you'd be coming up on a total energy use of about 2.1 kWh per year, or about $0.35 per year in USD.
I'm not made of money! The light stays off!