The Central Statistics Agency (BPS) collected input data on non-renewable natural energy resources throughout 2017-2021.
These non-renewable natural energy resources consist of coal, crude oil, and natural gas. Of these three energy sources, BPS states that coal contributed the most.
In 2017, input totaled 12,362 petajoules (pj). This increased significantly in 2018 to 14,957 pj. Furthermore, in 2020, input rose to 15,527 pj.
However, in 2020, input of this black mineral decreased considerably to 14,258 pj. A year later, it increased again to 15,373 pj.
"The majority of natural energy input in Indonesia comes from coal resources, consistently contributing approximately 71-75% of Indonesia's natural energy input during 2017-2021," wrote BPS in its report, *Indonesia's Energy Flow Balance and Greenhouse Gas Emission Balance*.
The second largest input after coal was natural gas. In 2017, input was 2,497 pj. The following year, it increased to 2,541 pj.
In 2019, this energy source decreased to 2,374 pj. Then in 2020, it increased to 2,462 pj. In 2021, it slightly decreased to 2,452 pj.
Lastly, crude oil recorded an input of 1,944 pj in 2017. In 2018, input decreased to 1,885 pj.
In 2019, the volume decreased again to 1,809 pj. Then in 2020 and 2021, it decreased to 1,261 pj and 1,611 pj respectively.
Crude oil is the non-renewable energy source that experienced a yearly decrease in input.
"Natural gas and crude oil resources each contribute approximately 8%-14% of the total natural energy input in Indonesia," wrote BPS in its report.
The total input of non-renewable natural energy was 16,803 pj in 2017; 19,383 pj in 2018; 19,710 pj in 2019; 18,446 pj in 2020; and 19,437 pj in 2021.
(See also: Indonesia's Coal Reserves Will Last Another 62 Years, Oil and Gas Reserves Have a Shorter Lifespan)