this post was submitted on 20 Mar 2024
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Back to the Future's 1.21 gigawatts sounds huge, but is it? We compare different power levels of common objects to see how much energy a gigawatt really is.

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[–] [email protected] 4 points 7 months ago (2 children)

Where are you getting those numbers from? First of all, GW is a unit of power, not energy. You can’t “produce 1.21GW in a day” because it’s a measurement of instantaneous power. Some nuclear reactors produce around 1GW(e), which means 1 gigawatt hour per hour.

[–] [email protected] 1 points 7 months ago (1 children)

haha, i read the article. its all in there.

[–] [email protected] 2 points 7 months ago

Yeah, and the article is wrong, though only slightly. They seem to be confusing watts (power, energy over time) with Joules (energy, power times a duration of time). They give a passable definition in the beginning ("energy transfer"), but they seem to misunderstand what the "transfer" part means exactly.

If you find-replace all instances of "watt" with "watt-hour" after that starting definition, it would be more accurate. That's why I say it's only slightly wrong.

[–] [email protected] 1 points 7 months ago

1.21 gw = output of one nuke plant
1.21 gw × 1 day = (power requirements of a house) × (100 years)

I'm guessing