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kWhKilowatt-Hour
The kilowatt-hour equals 3.6 megajoules โ energy delivered by 1 kW for 1 hour. It is the standard unit on electricity bills worldwide. A UK home uses about 2900 kWh/year; an EV charge adds 10โ80 kWh depending on battery.
Real-world: UK home: ~2900 kWh/year. Tesla Model 3 battery: 60โ80 kWh. Typical EV efficiency: 15โ20 kWh/100 km.
Read full kilowatt-hour reference โ