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Out of curiosity I decided to try and run the numbers on how much Netflix you can watch for the energy cost of a ChatGPT prompt As far as I can tell it's between 5.1 and 10.2 seconds, depending on which end of the 2019 IEA Netflix energy usage estimate you use simonwillison.net/2025/Nov/29/...

"that's 240 watt-hours per hour at the higher end" - "watt-hours per hour" could just be "watt", right?

Watt-hours is the energy measure and hours there is the Netflix duration, so it's actually "watt-hours per Netflix-hour"

But that's still "streaming Netflix consumes 340W". The unit watt already is energy per time (Jules per second).