Using a multi-method approach for decision-making about a sustainable local distributed energy system: A case study from Finland

摘要: Distributed energy systems (DESY) are used in many households as an alternative to conventional centralized production. While production does offer certain advantages, there is growing interest smaller distributed renewable options. This study uses combines two different methodologies, namely life cycle assessment (LCA) and the analytical hierarchy process (AHP), assess sustainability of three scenarios, with aim finding most sustainable combination DESY options for a case municipality approximately 220 inhabitants Western Finland. The local potentials five options: wind, small-scale hydropower, biogas, combined heat power plants photovoltaics (PV) were calculated after which criteria selected. Three scenarios created represent mixes capable meeting electricity consumption needs area: 1) non-biomass option wind hydro power, 2) hydropower solar 3) (CHP) plant electricity. In addition, from biogas was bridge gap between all when needed. values by using LCA software database (GaBi 6.0) -information literature values. Then experts prioritized pairwise comparisons resulting valuations assessment. findings indicate that application methodologies strengthened analysis provided large relevant information base support decision-making optimally DESY. general, results imply scenario 1 has fewer negative impacts than other PV biomass utilization future, applying AHP may be useful stakeholder participation weighting environmental aspects sustainability.