Glossary of Natural Gas Measurements
Joule (J) – a base metric measure of energy. One J is the equivalent of
the energy required to raise the temperature of one gram of water by approximately
one quarter of one degree Celsius.
Gigajoule (GJ) – a measure of energy used to express the heating
value of natural gas or of energy consumed. One GJ is equivalent to one billion J.
An average home uses about 130 GJ per year.
Terajoule (TJ) – a unit of energy equivalent to 1,000 GJ.
Petajoule (PJ) – a unit of energy equivalent to 1,000,000 GJ.
Cubic metre (m3) – a unit of volume measurement commonly
used to express the amount of natural gas sold to consumers. The typical home
uses between 3,000 and 3,550 m3 of natural gas per year.
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