RENEWABLE ENERGY MANUFACTURING IN INDONESIA: ADVANCING NICKEL PRODUCTION FOR THE GLOBAL EV BATTERY INDUSTRY

This case study profiles Trinitan Green Energy Metals (TGEM), an Indonesian company utilizing Step Temperature Acid Leach (STAL) technology to produce high-purity nickel for the global electric vehicle (EV) battery industry. The document details TGEM's efforts to implement closed-loop refining ecosystems to reduce the environmental footprint of nickel production.

• Trinitan Green Energy Metals (TGEM) produces high-purity nickel as mixed hydroxide precipitate (MHP) using Step Temperature Acid Leach (STAL) technology. This technology, developed by TGEM's subsidiary Hydrotech Metal Indonesia (HMI), is patented in Canada, Indonesia, Japan, New Caledonia, and the Philippines.
• STAL technology allows for the extraction of Class I nickel from low-grade limonite ore, which was previously considered overburden. Unlike High-Pressure Acid Leach (HPAL) technology, which operates at approximately 50 bar, STAL operates under normal atmospheric pressure (1 atmosphere) and uses approximately 10 times less sulphuric acid per ton of ore processed.
• TGEM is expanding its operations through two integrated nickel processing ecosystems: the STAL One Ecopark in Bogor, with an expected annual production of 10,000 tons of MHP, and the Indonesia Green Nickel Integrated Technology Ecopark (IGNITE) in Sorong, Southwest Papua, with an anticipated annual capacity of 400,000 tons of MHP.
• STAL technology demonstrates a lower environmental impact than HPAL. STAL has a carbon footprint of 15.5 tCO2 eq per ton of nickel output compared to HPAL's 21 tCO2 eq, and a water footprint of 238 m3 per ton of nickel output compared to HPAL's 303 m3.
• TGEM employs a closed-loop zero-waste system to repurpose residues. This includes converting sulphur trioxide emissions into sulphuric acid for reuse in the leaching process and processing iron residues into iron oxide for the production of industrial bricks.
• Indonesia holds the world's largest nickel reserves, approximately 21 million tons in lateritic form. About 60% of global nickel reserves come from laterite deposits found in Indonesia, the Philippines, and New Caledonia.

APA

Sustainable Energy for All (n.d.). RENEWABLE ENERGY MANUFACTURING IN INDONESIA: ADVANCING NICKEL PRODUCTION FOR THE GLOBAL EV BATTERY INDUSTRY. https://www.seforall.org/system/files/2023-11/TGEM%20Company%20Profile.pdf

Chicago

Sustainable Energy for All. RENEWABLE ENERGY MANUFACTURING IN INDONESIA: ADVANCING NICKEL PRODUCTION FOR THE GLOBAL EV BATTERY INDUSTRY. n.d. https://www.seforall.org/system/files/2023-11/TGEM%20Company%20Profile.pdf.

Wikipedia

{{cite report |author=Sustainable Energy for All |title=RENEWABLE ENERGY MANUFACTURING IN INDONESIA: ADVANCING NICKEL PRODUCTION FOR THE GLOBAL EV BATTERY INDUSTRY |url=https://www.seforall.org/system/files/2023-11/TGEM%20Company%20Profile.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{sustainableenergyforallndrenewable, author = {{Sustainable Energy for All}}, title = {{RENEWABLE ENERGY MANUFACTURING IN INDONESIA: ADVANCING NICKEL PRODUCTION FOR THE GLOBAL EV BATTERY INDUSTRY}}, institution = {Sustainable Energy for All}, url = {https://www.seforall.org/system/files/2023-11/TGEM%20Company%20Profile.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }