The availability of Perum Perhutani potential forest area to support the PT. PLN’s biomass cofiring sustainability: A Mini Review

High-rank coal reserves continue to decrease, while what is widely available is in the form of low-rank coal with low calorific value and high sulfur. Biomass can be a solution for providing fuel to replace low-rank coal (4,000 kcal/kg). To ensure the sustainability of the supply of biomass cofiring, it is necessary to have sufficient land available for energy plantations/forestry plantations (HTE). This research is aimed at assessing the availability of land in forest areas in Perum Perhutani for energy crop activities by using the right types of plants to supply biomass cofiring. Perhutani has entered into a cooperation agreement with PT. PLN to meet the need for cofiring-biomass PLTU. Currently on the island of Java, there are 11 PLTUs with a total electricity capacity of 14,645 MW. For 5% biomass cofiring, 189,849 ha of HTE land is required. Perum Perhutani has established a business portfolio of Biomass Plants covering an area of 67,356 ha. This area is equivalent to the effective area of 48,496 ha of HTE which supplies 3,756 MW of electricity (26% of the total capacity of the Java PLTU). The types of plant biomass used were Gamal (Gliricidia sepium) and Kaliandra (Calliandra callothyrsus).