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Table 4 Scores for the environmental sustainability dimension

From: Sustainability assessment of a micro hydropower plant in Nepal

Themes Dimensional weighting (%) Code Indicators Score Notes on scoring Theme score
Law 15 ENV1 Compliance with legislation 4 Working policies are largely implemented (integration with irrigation, education, health, small-scale industry; use of locally available skill where possible; technical assistance from DDC), minor points are missing (no integration with drinking water, late decision for subsidies with Subsidy Policy 2011/12) 4.00
Aquatic ecosystem 15 ENV2 Level of interference with fish population and other aquatic species 4 No major impact on fish population 4.00
ENV3 Interruption of river continuum, inverse to quality of fish bypass system 0 Unable to score
ENV4 Share of water taken from the river 4 Share of water taken from river is adequate and could even be exploited more, provided that share complies with regulations
Recreation 15 ENV5 Landscape 3 Some visible impacts on landscape beauty due to electricity poles and transmission lines 3.00
ENV6 Noise emissions from powerhouse 3 No disturbance for villagers except for operator, who sleeps in the power house  
Land 15 ENV7 Erosion 4 Vulnerability to erosion is low, canal made of concrete 4.60
ENV8 Sedimentation 5 Desilting tank and regular cleaning/maintenance as model recommendation
Climate change 40 ENV9 Fossil fuels avoided (GHG emissions) 4 Feasibility study goals are reached (kerosene demand reduced to 0.5 l/m-HH) and could be surpassed slightly 4.00
ENV10 Rate of deforestation 4 Firewood consumption is reduced remarkably by MHP electricity
ENV11 Flood protection 4 Curbstones are placed in vulnerable section of a headrace canal. Inundation area at intake seems adequate, minor criticism—dispersed area; it could be better structured
Aggregated score—environmental dimension 3.94