An Indonesian nickel producer at the centre of a complaint to the Singapore Exchange (SGX) over coal-related emissions has removed key data about its coal power capacity from its website, said environmental non-profit Market Forces.
The Australia-based advocacy group, which had filed the complaint, said that Harita Group recently altered a webpage describing the emissions controls at its coal power facilities used to supply electricity to its nickel operations.
The changes came shortly after Market Forces cited the page in a formal complaint lodged with SGX against Singapore lender OCBC, for potentially failing to comply with sustainability reporting requirements, particularly on the bank’s exposure to captive coal plants.
According to Market Forces, the original version of the Harita webpage included specific figures about the scale of its coal power infrastructure.
Eco-Business has contacted Harita Group and SGX for comment. OCBC has declined to comment.
The edited copy, highlighted in red. An earlier version stated the plant’s emissions. Image: tbpnickel.com
The page, headlined ‘Harita Group Implements Emission Control Technologies to Safeguard Air Quality’, previously quoted Amiruddin, deputy head of technical support at PT Obi Sinar Timur (OST), saying the company was operating a coal power plant with 910 megawatts (MW) of capacity out of a total installed capacity of 1,670 MW, some of which was still under construction. The plant was described as consisting of one 150MW unit and four units of 380MW each.
However, the webpage now contains a shortened version of the statement, said Market Forces. The updated text states that the company “currently operates a power plant – part of which is still under construction” and that it consists of five units, omitting the capacity figures.
Market Forces added that the detailed figures were still visible on Harita’s website as recently as February 2026.
Evidence that the original capacity numbers were publicly disclosed elsewhere exists via Indonesian energy news outlet Dunia Energi, which reported the same figures in June 2025. The publication quoted Amiruddin as saying the company operated a power plant with “kapasitas total sebesar 910 MW dari total kapasitas terpasang 1.670 MW”, which translates from Bahasa Indonesian to “total capacity of 910 MW from a total installed capacity of 1,670 MW”.
The information is also available on PT OST’s website, its corporate LinkedIn page, and in a report on “the dangers of captive coal” on Obi Island by non-profits including Trend Asia.
The emissions profile of PT OTS is still visible on the company’s LinkedIn page, in Bahasa Indonesian [click to enlarge]. Image: LinkedIn
Market Forces said the removal of the figures from Harita’s website raises questions about transparency at a time when its coal-powered nickel operations are facing scrutiny from investors and regulators.
“It’s very concerning that following our complaint to the SGX regarding potential misleading conduct by OCBC over its funding for Harita Nickel Group, the Indonesian company removed public disclosures regarding its coal power operations,” said Binbin Mariana, Asia energy finance campaigner at Market Forces in an emailed statement.
She added that this reduction in transparency is a “red flag” and Singapore’s regulators need to investigate why this data was scrubbed shortly after being cited in a formal complaint.
The complaint said that OCBC sustainability disclosures do not fully reflect the climate risks from captive coal plants, potentially breaching SGX rules on sustainability reporting.
OCBC responded then that the bank’s disclosures are aligned with SGX’s rules, and that it is guided by principles that “do not adversely impact people, communities or the environment” as a signatory to responsible financing framework, the Equator Principles.
SGX has not responded to Eco-Business queries about the complaint. But the regulator told Market Forces that SGX RegCo does not comment on specific companies and would take action where a breach of disclosure requirements has occurred.
Nickel processing in Indonesia – driven by demand from electric vehicle battery supply chains – has relied heavily on captive coal power plants to supply the energy-intensive smelting facilities, and is one of Indonesia’s fastest growing sources of climate pollution.
