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The paper introduces a transparent methodology to assess new suitable locations for mini and small hydro power plants in Europe. The expansion of hydro electricity production is a policy focus not only in Europe, but in the US (Hydropower Regulatory Efficiency Act of 2013) and in the developing world as well. The analysis of the technical potential points out the exact geographical locations and their corresponding capacities instead of only a theoretical potential; therefore it can serve as a reference for the policy debate over the sustainable management of water resources. This debate is reflected already in two major European policies: the Water Framework Directive (WFD) (2000/60/EC) and the RES Directive (2009/28/EC) on the promotion of the use of energy from renewable sources. As both policies have major influence on the priorities of water use, it is important to identify water management practices capable of accommodating sustainable energy purposes while maintaining water quality objectives at the same time. As the WFD poses limitation on the further expansion of large scale hydro options in the European water bodies, the present study focuses on local mini and small hydropower options and their suitability mapping. The presented, geographically explicit method is based on geospatial analysis and the results can contribute to the prioritization of potential hydro power sites in order to improve water quality and its use for energy simultaneously. [ABSTRACT FROM AUTHOR]

Abstract: This paper provides a geographical assessment of potential bioenergy production in the European Union from residues of eight agricultural crops (wheat, barley, rye, oat, maize, rice, rapeseed and sunflower). The evaluation is geographically explicit at the scale of 1km2 and is based on two main computational steps. In the first step the amount of crop residues resulting from statistical assessment based on the methodology developed by Scarlat et al. [1] have been spatially allocated on the EU-27 1 [1] The EU-27 expression symbolizes the current status of EU enlargements. Further information: http://epp.eurostat.ec.europa.eu/statistics_explained/index.php/Glossary:EU-27. territory using several auxiliary geospatial layers describing, for example, land cover, expected biomass productivity derived from soil parameters, climatic zones and topographical conditions. In the second step the number of model power plants (i.e., plants with a size of 50MW thermal input and a raw material demand of about 100kt/yr might be conveniently fed with available crop residues was estimated on the basis of two different allocation strategies implying a different grade of optimization. The results show that the estimated crop residue resources in EU-27 could provide fuel for about 850 plants expected to produce about 1500PJ/yr. Mobilization needs for the residues are also estimated, leading to a total amount of 1.5×1012–2×1012 tkm are necessary for the full potential exploitation. [Copyright &y& Elsevier]