Decarbonization Strategy in Hydrogen Production Using Alkaline Electrolyzer at PT PLN Nusantara Power Muara Karang Power Plant Unit
Keywords:
green hydrogen plant, ghg emissions, life cycle assessmentAbstract
PLN (Perusahaan Listrik Negara) operates Indonesia's first Green Hydrogen Plant (GHP) at PLTGU Muara Karang. GHP is part of the clean energy transition effort to achieve Net Zero Emissions (NZE) by 2060. The hydrogen production process fully utilizes renewable energy, with Solar Power Plants (PLTS) at PLTGU and Renewable Energy Certificates (REC) from the Kamojang Geothermal Power Plant (PLTP). GHP produces 51 tons of hydrogen annually, with 8 tons used for generator cooling, and the remaining 43 tons can
be utilized in transportation and industrial sectors. PLN estimates a CO₂ reduction of 1,920 tons per year. This study uses Life Cycle Analysis (LCA) to compare CO₂ emissions from hydrogen production using fossil energy (System I) and renewable energy (System II). The analysis helps understand the potential emissions reduction and Green Hydrogen’s contribution to a more environmentally friendly electricity generation at Muara Karang. Results show that the emission intensity of System I and II ranges from 0.012- 4.198
kgCO₂/kWh and 0.011- 4.484 kgCO₂/kWh, respectively. The total GHG emissions per unit product are 34.613 kgCO₂/kgH₂ and 11.207 kgCO₂/kgH₂. These findings indicate that the shift in energy sources for electrolysis input contributes to the reduction of GHG emissions.
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