Energy consumption measurement is done in varying units.
In List of countries by energy consumption per capita, the data is given in kilogrammes of oil equivalent per year [kgoe/a], and gigajoules per year, and in watts, as average equivalent power.
Megawatt hours per year can be written as Watt:
1 MW·h/yr = 1 000 kWh/yr = 1 000 000 Wh/(365.25·24)h = 114.077116 WattReferences
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