Increasing renewable energy sources in island energy supply: case study Porto Santo

Neven Duic and Maria da Graça Carvalho

Renewable and Sustainable Energy Reviews, 2004, vol. 8, issue 4, 383-399

Abstract: While the energy supply of most islands depends mainly on expensive oil derivatives' importation, the others are linked by usually a weak electricity grid connection to the mainland. Due to high energy costs the islands are proving to be excellent test beds for the introduction of new technologies, and some islands are trying to become so-called renewable islands, to satisfy their energy demand mainly or entirely from indigenous and renewable sources, thus increasing the security of supply, and employment opportunities, without necessarily increasing the costs. Islands that have energy sources, such as hydro or geothermal energy, can easily integrate them into the power system, but those with mainly intermittent renewable energy sources are confronted with the necessity of energy storage. The most promising technologies are reversible hydro where geography allows, and storing hydrogen where it does not. The stored hydrogen can later be used for electricity production, and also for transport. This paper describes the H2RES model for optimisation of integration of hydrogen usage with intermittent renewable energy sources on the example of an isolated island in the Madeira archipelago, Porto Santo. It shows that it is possible to significantly increase the penetration of renewable energy sources, albeit at a relatively high cost, with hydrogen storage technology. The H2RES model, which includes reversible hydro and batteries as storage technologies, can serve as a valuable tool for island energy planning.

Keywords: Renewable; energy; Islands; Energy; storage; Hydrogen; Fuel; cells; H2RES; model (search for similar items in EconPapers)
Date: 2004
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Citations: View citations in EconPapers (33)

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