• Pertamina Geothermal Energy intensified geothermal drilling in 2026 to support new capacity growth, maintain steam supply, boost operating reliability.
• Five wells drilled across three operating areas, spanning exploration drilling, production support make-up wells, ongoing development drilling campaigns.
• Gunung Tiga exploration well GTG-B.1 finished June 9, 2026, supporting resource appraisal for potential new geothermal capacity.
• Lumut Balai make-up drilling underpins the 55 MW Lumut Balai Unit 3 project; one well completed Sept. 3, another spudded Sept. 17.
• Lahendong’s Tompaso well TPS-P1.2 spudded Sept. 22 with a 2,300-meter target; estimated potential output about 8 MW.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. PT Pertamina Geothermal Energy Tbk published the original content used to generate this news brief via Indonesia Stock Exchange (IDX) (Ref. ID: 32165638) on October 12, 2026, and is solely responsible for the information contained therein.