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Units | ||
| Unit | Description | Measure |
| ha | hectare | Land area |
| mha | million hectare | Land area |
| t | tonne = 1000 kilograms | Weight (of gases) |
| mt | million tonnes | Weight (of gases) |
| GJ | gigajoules (109 joules) | Energy |
| PJ | petajoules (1015 joules) | Energy |
| MW | megawatts (106 watts) | Power |
| GW | gigawatts (109 watts) | Power |
| kWh | kilowatt hour | One unit of power used for one hour |
