Jakarta, April 20 -- Indonesia has discovered a major natural gas reserve in East Kalimantan with an estimated 5 trillion cubic feet (Tcf) of gas and 300 million barrels of condensate, Energy Minister Bahlil Lahadalia said, underscoring efforts to boost domestic energy supply.

"We are grateful for this discovery, and we must remain focused on carrying out the president's directive to find new oil and gas sources," Lahadalia told a press conference on Monday.

The find was made at the Geliga-1 well in the Ganal Block, operated by Italy's ENI, which holds an 82 percent stake, while China's Sinopec owns the remaining 18.percent.

The exploration highlights Indonesia's untapped hydrocarbon potential, particularly in the Kutai Basin, a prolif...