PLN: 25 Coal-Fired Power Plants Implement Biomass Co-firing

PT PLN Nusantara Power (PLN NP) is expanding the implementation of its biomass co-firing programme as part of efforts to support the national energy transition. Throughout 2025, the company recorded that this programme has been operating commercially at 25 coal-fired power plants (PLTU).

The President Director of PLN Nusantara Power, Ruly Firmansyah, explained that from the co-firing implementation, PLN NP recorded green energy production reaching 1,041 gigawatt hours (GWh) throughout 2025. This achievement contributes to a national carbon emission reduction of 1.17 million tonnes of CO2e.

“Through the optimisation of existing power plant assets, we continue to deliver cleaner, more reliable, and sustainable energy,” said Ruly, quoted from a written statement on Thursday, 30 April 2026.

Co-firing is the process of adding biomass as a partial replacement fuel for coal in a boiler (steam furnace) of a Coal-Fired Power Plant (PLTU) without requiring significant modifications to the existing infrastructure.

Entering the first quarter of 2026, PLN NP continued the positive trend by producing 245 GWh of green energy, exceeding 14.7 per cent of the set target. From this production, Ruly stated, carbon emissions were successfully reduced by up to 286,000 tonnes of CO2e.

He added that the successful implementation of co-firing at dozens of PLTU shows that transformation towards more environmentally friendly energy can be carried out gradually.

In addition to impacting emission reductions, this programme also opens opportunities for developing the national biomass ecosystem, including the utilisation of local resources and the creation of economic added value in regions.

PLN NP recorded that electricity production from co-firing in 2025 grew by 21.9 per cent compared to the previous year. Meanwhile, at the beginning of 2026, the growth trend continues in line with increased capacity and optimisation of power plant operations.