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Techno-Economic Analysis of Power Production by Using Waste Biomass Gasification

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Document pages: 8 pages

Abstract: Energyrecovery from waste biomass can have significant impacts on the most pressing developmentchallenges of rural poverty and environmental damages. In this paper, atechno-economic analysis is carried out for electricity generation by usingtimber and wood waste (T & WW) gasification in Iceland. Different expenseswere considered, like capital, installation, engineering, operation andmaintenance costs and the interest rate of the investment. Regarding torevenues, they come from of the electricity sale and the fee paid by theIcelandic municipalities for waste collection and disposal. The economicfeasibility was conducted based on the economic indicators of net present value(NPV) and discounted payback period (DPP), bringing together three differentsubgroups based on gasifier capacities, subgroup a: 50 kW, subgroup b: 100 kW and subgroup c: 200 kW.The results show that total cost increases as the implemented power isincreased. This indicator varies from 1228.6 k€ for subgroups a to 1334.7 k€for subgroups b and 1479.5 k€ for subgroups c. It is worth mentioning that NPVis positive for three subgroups and it grows as gasifier scale is extended. NPVis about 122 k€ (111,020 $),1824 k€ (1,659,840 $) and4392 k€ (3,996,720 $) forsubgroups a, b and c, respectively. Moreover, DPP has an inversely proportionalto the installed capacity. It is around 5.5 years (subgroups a), 9.5 months(subgroups b) and 6 months (subgroups c). The obtained results confirm thatusing small scale waste biomass gasification integrated with power generationcould be techno-economically feasible for remote area in Iceland.

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