Photo: The biomass cofiring trial is part of PT Aspex Kumbong’s commitment to reducing reliance on fossil fuels
CILEUNGSI – PT Aspex Kumbong has successfully conducted a biomass cofiring trial. The trial, held from August to October 2025, is part of PT Aspex Kumbong’s commitment to reducing dependence on fossil fuels, improving combustion efficiency, reducing greenhouse gas emissions and other pollutants, and expanding the renewable energy mix.
Cofiring is the process of simultaneously burning two or more different fuels, such as coal and biomass, in a single boiler and furnace. The cofiring process was carried out by mixing coal with biomass, specifically sawdust and rice husks, directly in the warehouse area.
During the trial, analysis and monitoring were also conducted on fuel composition ratios, operating parameters, pressure, the amount of steam generated, output emissions, and the mechanical performance of the boiler system.
The evaluation results obtained on Wednesday (08/10/2025) showed that the biomass cofiring trial on boiler fuel, using a mix of coal, sawdust, and rice husks at a 3-11% composition, yielded effective results and performance in terms of process stability, steam output, and emissions.
“This biomass cofiring process has been very helpful for us, especially in boiler operations. The mechanical processes ran smoothly without any issues,” stated Ahmad Abu Susilo, Shift Head of the Power Supply (Boiler) Department.
Photo: The cofiring process at PT Aspex Kumbong involves mixing coal and biomass (sawdust and rice husks) directly in the warehouse area
On this occasion, Setiyono, Head of the Learning and Innovation Center, stated that following the successful cofiring trial, the next step is to implement the sustainable use of biomass as an alternative fuel.
“This cofiring initiative is part of the company’s efforts to support renewable energy programs as an environmentally friendly energy source,” he emphasized.
Furthermore, the Indonesian government has been encouraging the development of biomass cofiring as part of its efforts to increase the renewable energy mix and reduce greenhouse gas emissions. Biomass plays a key role in Indonesia’s NZE 2060 roadmap, contributing to energy security, rural economic growth, and industrial decarbonization. (LIC)
