1. Ministry of Energy and Mineral Resources Republic of Indonesia (2022) Handbook of Energy & Economic Statistics of Indonesia 2021. Ministry of Energy and Mineral Resources Republic of Indonesia, Jakarta
2. Suharyati, Pambudi SH, Wibowo JL, Pratiwi NI (2019) Indonesia Energy Outlook 2019. Secretariat General of National Energy Council, Jakarta
3. Directorate General of Estate Crops Ministry of Agriculture (2020) Statistical of National Leading Estate Crops Commodity 2019–2021. Directorate General of Estate Crops, Ministry of Agriculture, Jakarta
4. Nyakuma BB, Oladokun O, Ivase TJ-P et al (2021) Combustion, kinetics, and thermodynamic characterization of oil palm empty fruit bunch pellets. Pet Coal 63:252–263
5. Sembiring KC, Rinaldi N, Simanungkalit SP (2015) Bio-oil from fast pyrolysis of empty fruit bunch at various temperature. Energy Procedia 65:162–169. https://doi.org/10.1016/j.egypro.2015.01.052