Editorial

Abstract

Although interest in bioenergy is increasing rapidly, methodologies for assessing biomass energy potential are still in their infancy, and the assessment of externalities associated with biomass energy production and use are important areas which have received even less attention. Using multi-dimensional analysis this situation will be addressed by developing a decision support system - BEFAT - which will incorporate both socio-economic and environmental benefits of biomass energy into an overall cost analysis. Firstly, a biomass energy flow chart has been produced for the UK (based on data from the FAO Agrostat PC Data Base) which shows terrestrial above ground biomass production from agricultural and forestry operations. Total biomass energy production was estimated at an annual average (1981–1991) of 2192PJ, 164PJ from forestry, 326PJ from livestock, and 1701PJ from agricultural crops. Only 45% of total biomass production was harvested and used. Losses amounted to 1235PJ (55% of total production). Secondly, to develop BEFAT further, three local case studies were examined. Each case study is sited in a different area of the UK, and each examined different aspects of the biomass energy resource base and the potential for bioenergy generation (eg. energy for heat and hot water - Nuttwell Farm, Somerset and Lower Moss Farm, Derbyshire; energy as a by-product of forest management - Forest of Mercia). Biomass flows were examined from supply through to end use for both the farm studies. Emphasis was placed on the supply side and comprehensive cost analysis will be performed.