- Hybrid- A petrol or diesel car, that also has a small battery and electric motor. It doesn’t have a plug, can’t be charged up and has a limited electric range. 
- HEV- Hybrid Electric Vehicle. A petrol or diesel car, like the BMW X5 Hybrid, that also has a small electric motor and battery. It doesn’t have a plug, can’t be charged up from the grid and gets its power from the engine or braking energy. It has a limited electric range. See ‘Hybrid’. 
- Home Charging Point- A specific electrical unit, usually a wallbox, fitted to the outside of your home to charge a car with a battery. Supplied by a company like BP Chargemaster. 
- Hydrogen- A gas which is used to power Fuel Cell Electric Vehicles (FCEV) and can also be burned in conventional engines with modifications. It can be created using electricity, so is potentially a renewable energy source. 
- Heat Pump- A more energy efficient type of heater which can be used in a car or house. It works like an air conditioner in reverse, taking warmth out of the air and condensing it. 



