$140 Million Coal Titan BUMA Locks in ‘Fortress’ Contract with Adaro to Guard Its Future Until 2030

JAKARTA, Indonesia (JakartaWeekly.com) – In an industry often characterized by volatile cycles and shifting loyalties, two of Indonesia’s energy titans have decided to double down on a partnership that has already outlasted most marriages.

PT Bukit Makmur Mandiri Utama, the operational powerhouse known as BUMA, has officially inked a long-term extension with PT Adaro Indonesia to steer operations at the South Tutupan Mine in South Kalimantan through the end of the decade. The deal, which officially kicks off in April 2026, secures BUMA’s presence at the Tanjung Tabalong site until at least December 31, 2030.

This contract is not just a gesture of goodwill; it is a high-stakes logistical mandate. Over the next five years, BUMA is tasked with moving a staggering 239 million bank cubic meters (bcm) of overburden and extracting 44 million tonnes of coal.

“The contract is a testament to BUMA’s consistent operational delivery and our ability to manage technically complex mining operations safely and reliably,” said Ronald Sutardja, President Director of PT Bukit Makmur Mandiri Utama.

Beyond the Coal Face

While the primary focus is extraction, the partnership is increasingly being defined by its “Shared Value” model. BUMA has tied its operational presence in Tabalong to a suite of social and environmental programs that have recently drawn accolades from both provincial and local governments.

These initiatives range from the “JIKAMAKA” digital literacy workshops and youth broadcasting classes to the “Kampung Iklim” environmental protection program. The company has also been credited with advancing the “Adipura” initiative—a national program for cleanliness and urban environmental management—and supporting local small-to-medium enterprises (UMKM).

“Our partnership with Adaro Indonesia extends beyond operational delivery,” Sutardja noted, emphasizing a commitment to the “long-term prosperity” of the local community.

A Diversified Powerhouse

The contract renewal comes at a time of significant transformation for BUMA’s parent group. Since its inception in 1990, the Group has evolved from a local contractor into a diversified global mining player with interests in Australia and the United States.

Recent strategic moves include:

• 2024 Expansion: The acquisition of Atlantic Carbon Group in the U.S., making the Group a leading producer of ultra-high-grade anthracite.
• Future-Facing Metals: Acquiring a stake in Australia’s 29Metals Limited to enter the copper and base metals sector.
• Tech Integration: Utilizing “BTech” to develop deep learning technologies for operational efficiency and emission reduction.

Having secured a spot in the FORTUNE Southeast Asia 500 for 2025, the new Adaro contract provides BUMA with a stable foundation in its home market as it continues to pursue a globally diversified “four-pillar” strategy involving mining services, mine ownership, technology, and social enterprise.