Economic analysis on small-scale forest biomass gasification considering regional resource distribution and technical characteristics

Kenjiro Yagi, Toshihiko Nakata

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Small-scale wood biomass gasification is considered as a suitable technology to utilize forest biomass such as logging residue and unused thinned wood. Recently, more than 10 demonstration plants have started to operate to verify both technical and economic feasibility of the system. This study analyzes the economic aspect of gasification system focusing on the regional distribution of biomass resources and technical characteristics such as scale merit. The authors developed BiRReT tool, which conducts the economic analysis of biomass energy system in a local region by finding the optimal conditions, namely plant size, plant location, and the number of plants. Case study in Miyagi prefecture had been carried out. Firstly, the economics of gasification system is compared with the steam-turbine-based CHP system that utilizes grate or fluidized-bed combustion technology. The result shows that gasification system has strong advantage in terms of low fuel transportation cost. Secondly, the economic feasibility of the system in a region is analyzed. The system with logging residue fuel has the possibility to gain economic competitiveness if technology learning and cost reduction will be seen in the capital cost and the fuel production process. Thinned wood will not be utilized only for the energy purpose.

Original languageEnglish
Pages (from-to)109-118
Number of pages10
JournalNihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy
Volume86
Issue number2
DOIs
Publication statusPublished - 2007 Feb

Keywords

  • Economic analysis
  • Forest biomass
  • Local energy system
  • Wood biomass gasification

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology

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