Most of your energy goes into heat and transport: 4,000–5,500 kWh a year for heating and hot water, plus 2,700 kWh for an electric car or around 10,000 kWh of fuel for a petrol one. This catalog covers every category of consumption — heating, cooling, transport, computation, attention, social obligation — with the typical cost and the highest-leverage way to reduce each one.
See also: what uses the most electricity in a home and what your car costs in energy.