> Heating 76.5 litres of water (8.9 minutes x 8.6 litres per minute) from 18 to 38 degrees Celsius requires 2.1 kilowatt-hours (kWh) of energy. In late Septemb

> Heating 76.5 litres of water (8.9 minutes x 8.6 litres per minute) from 18 to 38 degrees Celsius requires 2.1 kilowatt-hours (kWh) of energy. In late September this year 2022 my region was hit by a hurricane. My power mine was off for 10 days. Of all the things that I missed it was my daily shower. I have a butane camp stove and used it to heat water it's actually very good much better than my electric stove. I also bought a 3kW generator and an electric kettle. My plan was on day 8 to have a bath so I filled the tub just a bit to save on effort. And then I heated water in a pot on the stove and in the kettle. I did that over and over many times but I could only get the water from 13C to 20C in an hour and a half. I just sat in the water and had a "bird bath" but even that was incredibly cold to the point my muscles ached. From that experience I can certainly appreciate the amount of energy it takes to heat up even a small amount of water.