The Sarulla project is located in Pahae Julu and Pahae Jae Districts, North Tapanuli Regency, North Sumatra Province. The first unit was operated commercially in March 2017, the second unit was operated in October 2017 and the third unit started to operate in May 2018.

The Sarulla project has potential resources in Donotasik & Sibual-buali, South Tapanuli.