Environmental Assessment of Hellisheidi Geothermal Power Plant based on Exergy Allocation Factors for Heat and Electricity Production

The Hellisheidi geothermal power plant, located in Iceland, is a combined heat and double-flash plant with an installed capacity of 303.3 MW electricity 133 hot water. This study aimed to elucidate the environmental impacts production from this plant. In vein, firstly, most updated inventory was generated, secondly, life-cycle assessment approach based on exergy allocation factor carried out instead applying traditionally used allocations terms mass energy. functional unit defined as 1 kWh water for district heating. stages included (i) construction, (ii) operation (including abatement operations maintenance), (iii) well closure All construction dismantling were considered. Finally, results partitioning impact showed that should be charged electricity, expected. Furthermore, distribution among determined stage impactful production. result attributable large consumption steel demanded during (geothermal wells, equipment, buildings). Impacts due demonstrated satisfactorily reduced total attributed three