Energy efficiency in our operations
We aim to be net zero on emissions generated by our operations by 2050 or sooner, in step with society, as well as on emissions associated with the energy we need to power them.
One of the metrics we use to measure our performance is energy intensity: the amount of energy consumed for every unit of output.
The refinery energy intensity index increased from 96.1 in 2020 to 96.9 in 2021, in part due to the impact of Hurricane Ida in the USA.
Chemical steam cracker energy intensity in 2021 was 18.1 gigajoules per tonne (GJ/tonne) of high-value chemical (HVC) production, down from 18.7 GJ/tonne HVC in 2020, in part due to good reliability and high utilisation at our Bukom chemical plant in Singapore and Deer Park in the USA.
In 2021, the overall energy intensity for the production of oil and gas in our Upstream and Integrated Gas businesses (excluding liquefied natural gas and gas-to-liquids) remained relatively flat at 1.14, compared with 1.15 in 2020.
We expect it will be difficult to maintain the energy intensity levels of recent years, as existing fields age and new production comes from more energy-intensive sources. This may increase our upstream energy intensity over time.