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The 'tonne of oil equivalent' ('toe') is a unit of energy: the amount of energy released by burning one tonne of crude oil, approximately 42 GJ (as different crude oils have different calorific values, the exact value of the ''toe'' is defined by convention; unfortunately there are several slightly different definitions as discussed below).
The ''toe'' is sometimes used for large amounts of energy, as it can be more intuitive to visualise, say, the energy released by burning 1000 tonnes of oil than 42,000 billion joules (the SI unit of energy).
A barrel of oil equivalent (boe), also a unit of energy, contains approximately 0.146 toe (i.e. there are approximately 6.841 boe in a toe).
Multiples of the ''toe'' are used, in particular the megatoe (Mtoe, one million toe) and the gigatoe (Gtoe, one billion toe).
The IEA/OECD define one ''toe'' to be equal to 41.868 GJ ^[1] or 11.630 MWh.
Some organisations use other conversion factors, for example:

★ 1 toe = 42 GJ

★ 1 toe = 41.85 GJ^[2]

★ 1 toe = 7.11, 7.33, or 7.4 boe

★ 1 'tonne petroleum equivalent' (TPE), a parameter used in renewable energy, 45.217 gigajoules.

Contents

References

See also

References

1. American Physical Society
2. Definition at 41.85 GJ

See also

★ Conversion of units

★ Energies per unit mass