Biogas
Palm Oil Mill Effluent / Waste water mills
PT. Pasadena Engineering Indonesia has built two power plants (PLT) Biogas made from raw POME (Palm Oil Mill Effluent / Waste water mills). In 2014, Biogas has built PLT in palm oil mills (PKS) PT. Rama Arya Prakasa, village Rantau Way, District of North Tambusai, Rokan Hulu with an installed capacity of 45 tonnes of fresh fruit bunches (FFB) per hour. This plant with a capacity of 1 MW which goes to the public (off-grid). The project is financed by the Directorate General of New and Renewable Energy and Energy Conservation (EBTKE), Ministry of Energy and Mineral Resources. After commissioning, Biogas PLT was unveiled on 16 September 2014 by the Deputy Minister of Energy and Mineral Resources.

By 2015, PT.PEI Biogas has built PLT POME based on PTPN II PKS Merbau Fence 2, Pagar Merbau II, District Fence Merbau, Deli Serdang, North Sumatra. MCC's installed capacity is 45 tonnes FFB per hour. The plant produces 1 MW of electricity by exploiting directly sold to PLN (on-grid) This project is also funded by the Directorate General of New and Renewable Energy and Energy Conservation (EBTKE), Ministry of Energy and Mineral Resources.

The technology used in the biogas project is covered lagoon reactor technology with HDPE geomembrane that will capture methane generated from anaerobic reaction. This reactor will convert the content of COD in biogas.POME POME be supplied from the MCC will be accommodated to the pre-processing unit to get conditions that suit their needs POME biogas reactor. In the lagoon reactor, the demolition of the substrate reaction occurs through hydrolysis reaction into simpler components. Simpler components will be converted into intermediates through reaction components asidogenesis and acetogenesis. This intermediate component will be converted into biogas through methanogenesis reaction. The whole process occurs without oksigen.Gas produced is processed to remove the impurity content, H2S, and water vapor to meet the needs of the gas engine. The treated gas is then supplied to the gas engine.