Energy products are recorded in their original units of measure. As these units of measure vary, quantities of energy products need to be converted into a common unit to allow for comparison and aggregation.
The common unit of measurement used to measure energy products in this publication is the tonne of oil equivalent (toe). According to the IEA, the tonne of oil equivalent is defined as follows:
1 tonne of oil equivalent = 41.868 gigajoules (GJ) = 11,630 kilowatt hours (kWh)
The tonne of oil equivalent should be regarded as a measure of energy content rather than a physical quantity. One tonne of oil is not equal to one tonne of oil equivalent. The following prefixes are used for multiples of the various units of measure:
kilo (k) = 1,000 or 103
mega (M) = 1,000,000 or 106
giga (G) = 1,000,000,000 or 109
tera (T) = 1,000,000,000,000 or 1012
All prices and tariffs are presented in Singapore dollars.