Energy Islands in Greece: Astypalaia case study
Author
Proimakis, Nikolaos
Term
4. Term
Publication year
2018
Submitted on
2018-06-08
Pages
116
Abstract
Denne afhandling adresserer de høje omkostninger og den lave effektivitet i energiforsyningen på græske ikke-interkonnekterede øer gennem et casestudie af Astypalaia. Med udgangspunkt i Grækenlands økonomiske udfordringer og EU’s ø-initiativer undersøges, hvordan øens nuværende, fossilt baserede system kan erstattes af et Smart Energy System, der væsentligt øger andelen af vedvarende energi i den endelige elproduktion (målrettet 60%+ i nationale planer). Forskningsspørgsmålet er, hvilke teknologivalg og systemkonfigurationer der mest fordelagtigt kan forbedre den samlede systemydelse og øge VE-andelen. Metodisk kombineres en analyse af politiske rammer og lokale ressourcer med detaljeret energisystemmodellering i EnergyPLAN: en referencesituation opstilles og sammenlignes med flere alternative scenarier, der kombinerer vind, solceller, lagring (bl.a. pumped storage), energieffektivisering og individuelle varmepumper under hensyn til netstabilitet og Critical Excess Electricity Production (CEEP). Scenarierne vurderes på primærenergi, VE-andel, CO2‑udledning, omkostninger og driftsforhold, og der gennemføres følsomhedsanalyser af centrale usikkerheder. De første sider præsenterer problemstilling, metode og analysetilgang; kvantitative resultater fremgår af de senere kapitler, hvor de mest fordelagtige omstillingsforløb for Astypalaia identificeres.
This thesis addresses the high costs and inefficiencies of electricity supply on Greece’s non-interconnected islands through a case study of Astypalaia. Framed by Greece’s economic challenges and EU island initiatives, it investigates how the island’s current fossil-based system can be replaced by a Smart Energy System that markedly increases the share of renewables in final electricity production (with national plans targeting 60%+). The core research question is which technology choices and system configurations most advantageously improve overall system performance while raising the renewable share. The methodology combines analysis of policy context and local resource potential with detailed energy system modelling in EnergyPLAN: a reference case is built and compared with multiple alternative scenarios that integrate wind, photovoltaics, storage (notably pumped hydro), energy efficiency, and individual heat pumps, while accounting for grid stability and Critical Excess Electricity Production (CEEP). Scenarios are evaluated on primary energy use, renewable share, CO2 emissions, costs, and operational aspects, with sensitivity analyses on key uncertainties. The first pages set out the problem, methods, and analytical approach; quantitative results are presented in later chapters, where the most advantageous transition pathways for Astypalaia are identified.
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