Energy usage ready reckoner for everyday activities

This is a rough ready reckoner to help you understand your personal energy consumption.

Following David MacKay, I standardise everything in kilowatt hours.

You can find the assumptions and calculations in the local energy usage TypeScript modules, or click a section heading for its calculation source.

Key to graphics

Each full square () in the visualisations represents 1 kilowatt hour (kwh), the amount of energy consumed by using 1,000 watts of power for one hour.

Driving

Flying

Heating

Showers/baths

Electricity

Stuff

Eating

Pets

Summary

Here’s another representation of how your energy usage breaks down: