Definition Within The Field of Energetics
Energy carriers are various energy forms of energy input required by the various sectors of society to perform their functions.
Energy carriers (EC) are produced by the energy sector using primary energy sources (PES). The distinction between "Energy Carriers" and "Primary Energy Sources" is extremely important since these two labels refer to energy forms of different quality so that they cannot be aggregated: 1 megajoule (MJ) of EC is not the same as 1 MJ of PES.
Read more about this topic: Energy Carrier
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—François, Duc De La Rochefoucauld (1613–1680)
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—Sarah Fielding (1710–1768)