Indonesia Faces Emissions Pressure as Petrochemical Capacity Surges

Refinery Boom Accelerates

Indonesia added nearly US$6 billion in petrochemical investment through a July 2025 agreement with PT Taikun Petro Chemical, a consortium backed by Chinese firms Tongkun, Xinfengming, and Tsingshan. The North Kalimantan refinery and chemicals complex will generate over 7.2 million tonnes of methanol and acetic acid annually, according to Alexandra Arri Cahyani, public relations bureau head at Indonesia's Ministry of Industry. The facility forms part of Kalimantan Industrial Park Indonesia, a sprawling zone focused on EV batteries, mineral processing, and petrochemicals.

The government projects the PT Taikun complex will contribute US$9 billion to GDP each year while cutting import dependence. Capacity will rise by up to 10 million tonnes of crude oil per year. Three months before that deal closed, Lotte Chemical opened a US$3 billion ethylene plant in Cilegon, Java, designed to produce one million tonnes of the plastic precursor annually.

Both projects underscore Jakarta's push to deepen value-added manufacturing. Yet analysts warn that locking in decades-long petrochemical assets could collide with Indonesia's pledge to reach net zero by 2060, especially absent mandatory emissions caps.

Hard-to-Abate Reality

Cahyani acknowledged in written remarks that the chemicals subsector falls into the hard-to-abate category because renewable electricity cannot deliver the extreme temperatures steam cracking requires. She confirmed that PT Taikun's planning incorporates greenhouse gas emission growth projections.

In 2022 Indonesia's chemical sector released roughly 10.3 million tonnes of CO2-equivalent from direct production processes alone, excluding energy-related emissions. Petrochemicals accounted for around a quarter of that total, or approximately 0.2 per cent of national emissions. While modest today, that share will climb as output scales, according to Fabby Tumiwa, executive director of the Institute for Essential Services Reform. Demand for polyethylene and other commodity plastics remains exceptionally strong, and bio-organic substitutes can displace only simple items like baskets. High-density polyethylene used in technical applications lacks a commercially viable alternative because conventional petrochemical routes remain far cheaper.

Putra Adhiguna, managing director of the Energy Shift Institute, noted that without ready substitutes, Indonesia risks entrenching fossil fuel reliance for decades.

Decarbonisation Strategies Under Review

Late in 2025 the Ministry of Industry, working with the World Resources Institute Indonesia and IESR, published an industrial decarbonisation roadmap identifying nine priority subsectors. Chemicals, including petrochemicals, made the list. A new regulation setting standardised factory emission-reduction targets is slated for release in late 2026.

Nada Zuhaira, a sustainable business and net-zero analyst at World Resources Institute Indonesia, outlined a suite of options spanning the value chain: breakthrough technologies such as carbon capture, low-carbon electricity, circular economy measures to boost reuse and recycling, green hydrogen as a feedstock, and improved methane leak detection.

She cautioned that carbon capture remains immature and commercially uncompetitive. Tumiwa called relying on capture technology to justify continued fossil fuel use a dangerous path, pointing to real-world projects that consistently miss performance targets. Large-scale deployment would also demand extensive pipeline networks to transport captured CO2 to suitable geological storage sites.

Energy efficiency offers the most practical near-term lever, Zuhaira said, but it can deliver no more than 15 per cent of the emissions reductions needed by 2050. Demand for methanol and olefins is expected to more than double over that period, overwhelming efficiency gains.

Regulatory Gap and Stranded-Asset Risk

Indonesia designated petrochemicals a national strategic project, shielding the sector from the 2022 captive coal power plant ban. Tumiwa warned that lenient rules are attracting older, dirtier technologies from countries with stricter emissions limits, including China. He urged technology audits and binding emissions caps to prevent Indonesia from becoming a repository for obsolete equipment.

Zuhaira pointed to Europe, where carbon pricing through the EU Emissions Trading System has driven petrochemical producers toward electrification, chemical recycling, and bio-based feedstocks. Success there hinged less on technology breakthroughs than on regulatory certainty, she said. Meaningful carbon prices transformed decarbonisation from a voluntary pledge into a business imperative.

For Indonesia, new facilities built today will still be running in the 2050s and 2060s. Launching them without credible emissions trajectories risks creating stranded assets and shrinking access to export markets subject to mechanisms like the EU Carbon Border Adjustment Mechanism, Zuhaira said.

Cahyani confirmed that financial incentives including tax holidays and allowances for petrochemical investment do not yet factor in environmental performance. The ministry is drafting a broader policy ecosystem covering green taxonomy, subsidies, and carbon pricing mechanisms.

Essential Feedstocks, Critical Choices

Not all petrochemical output can disappear. Medical-grade plastics, building insulation, and components for solar panels and EV batteries remain indispensable to the clean energy transition itself, Zuhaira noted. The task is not eliminating the sector but transforming how it operates.

Zuhaira said decarbonisation is achievable if Jakarta enacts structural reforms: stronger regulation, expanded clean energy infrastructure, and adequate financial incentives. Without those levers, Indonesia's petrochemical expansion will deepen emissions exposure precisely when the country needs to bend the curve downward.