Basic Conversions And Conversions Between Energy Units Charts
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1
2Basic Conversions
Prefix
Symbol
Multiple
Example
Kilo
k
103
1 kJ = 1 000 J
Mega
M
106
1 MJ = 1 000 kJ
Giga
G
109
1 GJ = 1 000 MJ
Tera
T
1012
1 TJ = 1 000 GJ
Examples:
9
1 GJ = 10
J = 1 000 000 000 J
1 kt = 1 000 t
(Reminder: 1 t = 1000 kg , therefore 1 kt = 1 000 000 kg)
Conversions between Energy Units
Joule (J) – Basic (SI) energy unit for energy.
Watt-hour (Wh) – Energy unit used mostly for electricity.
1 Wh = 3 600 J 1 GWh = 3.6 TJ
1 TJ = 0.2778 GWh ( = 1/3.6 GWh)
Tonne of Oil Equivalent (toe) – Energy unit used in IEA energy balances.
1 toe = 41.868 GJ
Tonne of Coal Equivalent (tce)
1 tce = 0.7 toe
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