LIFE CYCLE ASSESSMENT OF GEOTHERMAL POWER GENERATION (Case Study: Star Energy Geothermal Wayang Windu, Ltd)

• Main Author: ANNISA NIM: 25316015, RINA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30501
• Institution: Institut Teknologi Bandung

Geothermal potential in Indonesia estimate can produced renewable energy 29 GW, and until 2016 it still used 5% or about 1643 MW in. From that result, about 227 MW produced by Wayang Windu geothermal power plant. The Input were raw material, energy and water. This input produced product, by product, emission, solid waste and waste water. All operational process in industry must be complied with environmental standard, and even go beyond compliance and perform continual improvement. This research will use Life Cycle Assessment method based on ISO 14040. LCA consist of several stage, i.e. the goal and scope definition, inventory analysis, impact assessment and interpretation. This research were use cradle to gate concept and MegaWatt Hours as the functional unit. Life Cycle Inventory has been done with direct input and output in the boundary and resulted that subsystem of Non Condensable Gas and condensate production have the largest environmental impact. LCI also show that every MWh electricity produced, it needed 6.87 Ton dry steam or 8.16 Ton liquid steam. Impact category that used in Life cycle impact assessment are Global Warming Potential (GWP), Eutrophication Potential (EP), and Acidification Potential (AP) in midpoint levels and land use impacts in endpoint level. GWP value is 0.155 Ton CO2eq./MWh, AP 1.69 kg SO2eq./MWh, EP 0.0013 gPO4 eq./MWh and land use impacts 0.0000251 PDF/m2. Life Cycle Impact Assessment resulted that Acidification Potential contribute 78% of environmental impact and 98% resulted from dari H2S Non Condensable Gas. Comparison results with another dry steam geothermal power plant show that impact potential result of the company in good position. Benefit cost analysis show this industry is still feasible. <br /> <br />