Basin

Gompertz curve

Equation

Peak year

Peak Production

(million tonnes)

Depletion rate

at peak

Ombilin

2048

1.6

1.40%

Bengkulu

2011

1.2

4.33%

Central Sumatra

2040

12.7

2.88%

South Sumatra

2069

111.6

1.39%

Tarakan

2023

38.5

4.24%

Kutai

2031

241.7

2.92%

Barito

2018

173.4

4.35%

Indonesia

2026

485.4

1.89%