Edi Slameto, Head of the Geological Survey Center at the Geological Agency, said Kalimantan is the next priority in search of CCS potential around the Nusantara Capital City (IKN).

He said research in Kalimantan would be a priority starting in 2025, while it would focus on basins found in Java and Sumatra.

Currently, the Geological Agency is conducting research in eight basins that have the potential to store CO2 emissions.

The eight basins are non-production basins located in Sumatra’s cities or districts of Bengkulu, Rawas, Mengkarang, Mentawai, Ombilin, Batang Natal, Sibolga and Woyla.

Meanwhile, the basin that has been researched, but is not yet in production status on Java Island has a carbon storage potential of 1,225 Giga tons.

On the other hand, Edi also added that the research results on CCS potential are still global in nature. Because other research is needed, such as whether groundwater is safe, earthquake fault lines and other parameters.

Some of the basins that have been mapped include:
● Southeast Java Basin. This is an intermontane basin in the Southern part of East Java province. The sedimentary basin is up to 5 km deep, the saline aquifer reservoir reaches 1.2 km thick, and has theoretical geological resources of carbon storage of 392 Giga tons.

● The South-Central Java Basin is in the southern part of Central Java Province. This intermontane basin has a sediment thickness of up to 5 km with an average saline aquifer reservoir thickness of 1 km, and theoretical geological resources of carbon storage of 69 Giga tons.

● Banyumas Basin is an intermontane basin located in Banyumas Regency, Central Java Province. The sedimentary basin is up to 6 km deep, with the saline aquifer reservoir reaching 1.6 km thick, and the theoretical geological resources of carbon storage are 209 Giga tons.

● The Southwest Java Basin is in the southern part of West Java Province. This intermountane basin has a saline aquifer reservoir reaching 1 km thick and theoretical geological resources of carbon storage of 190 Giga tons.

● The Bogor Basin is located in West Java and Banten Provinces. This Back-Arc basin has a saline aquifer reservoir reaching 1.2 km thick and theoretical geological resources of carbon storage of 365 Giga tons.