Indocement signs Paser RDF deal for Indonesian kilns

PT Indocement Tunggal Prakarsa Tbk signed a memorandum with the Paser government to use RDF from municipal waste as an alternative fuel in its cement operations in Indonesia.

The agreement was signed in Jakarta on 12 February 2026, according to CemNet. The source identifies Indocement as part of Heidelberg Materials Group and places the agreement within waste management and industrial energy use.

Paser exceeds 121 t/day of municipal waste

The material base of the agreement is specific: Paser generated more than 121 t/day of waste in 2023, according to CemNet. For a kiln operator, that number matters less as gross tonnage than as a preparation question: moisture, particle size, chlorine, calorific value and supply stability determine how much RDF can enter the system without penalising clinker.

Indocement did not announce in the source the annual RDF volume it will receive, the exact plant that will consume it or a thermal substitution rate. That absence limits any calculation of avoided CO₂ or coal reduction in the kiln.

Two facilities prepare 10 t/h and 5 t/h

The agreement names two integrated waste processing facilities: TPST Janju, with 10 t/h of capacity, and TPST Songka, with 5 t/h. Both will supply RDF for Indocement’s use, according to the same source.

Indonesian Environment Minister Hanif Faisol Nurofiq witnessed the signing together with Christian Kartawijaya, president director of Indocement, and Oey Marcos, a director of the company. Kartawijaya said the initiative aligns with expanding environmentally friendly energy use, according to CemNet.

The Knergy Angle

RDF displaces fossil fuel only when the kiln can absorb variability. In the calciner, a fine and dry fraction helps sustain stable combustion; at the main burner, moisture, chlorine and ash change flame shape and clinker chemistry. Localised H₂/O₂ injection provides a faster reaction zone and oxygen available close to the fuel, which can improve burnout of heterogeneous streams when injection design, mixing with tertiary air and sulphur control allow it. In Paser, the published data —121 t/day, 10 t/h and 5 t/h— describe potential supply, not thermal performance. The operating question is bounded: which RDF specification enters the kiln, at which process point and under what limit for chlorine, moisture and flame stability. The answer is measured in sustained TSR, specific heat consumption and clinker quality, not in the supply announcement.

What Indocement has not yet published

The source does not report an industrial start-up date, investment, annual RDF tonnes, receiving plant or CO₂ reduction. It also does not publish whether material from TPST Janju and TPST Songka will enter through the calciner, the main burner or a dedicated feeding line.

That detail separates waste policy from a measurable cement improvement. The agreement leaves an identified input and published hourly capacities; Indocement has not announced the substitution rate or operating results from RDF use.