Τεχνο-οικονομικός σχεδιασμός μονάδας αποθήκευσης υδρογόνου για την κάλυψη των ενεργειακών απαιτήσεων της Αστυπάλαιας
Techno-economic design of a hydrogen storage unit to meet the energy requirements of Astypalea
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Keywords
Πράσινη ηλεκτροπαραγωγή ; Πράσινο υδρογόνο ; Μη διασυνδεδεμένα νησιά ; Power to hydrogen to power ; Green hydrogen ; Non-interconnected islandsAbstract
Climate change mitigation is a global priority. The European Union is making a continuous effort to reduce the climate crisis consequences by setting optimistic energy and environmental targets to the member-states. As for Greece, apart from the obligation of compliance to the European directives, there are many other difficulties in the energy sector. The existence of hundreds of habitable islands significantly increases energy production and distribution costs. At the same time, the energy mix contains an important amount of fossil fuels that are responsible for high greenhouse gas emissions. The problem of providing the islands with high-pollution electricity is solved to a certain extent through interconnections with Greece’s mainland. However, because of the numerous non-interconnected islands, there is a need for another solution. For these reasons, this diploma thesis focuses on a “green” power generation unit, located in Astypalaia. The project includes exclusively renewable energy sources, from a wind park and a photovoltaic plant, while the state-of-the-art technology is the energy storage through green hydrogen. Green hydrogen is produced and stored when electricity production exceeds electricity demand. The use of hydrogen as a fuel during times of energy shortage resolves the main drawback of renewable sources, which is the intermittent production of energy. This independent energy system that is being developed has zero direct emissions and gives energy supply security to the island. Both the technical and economic characteristics of the investment have been studied. After the settlement of the necessary parameters for the design, the project was examined in terms of its financial attractiveness. The investment was assessed as marginally profitable, with very optimistic results for such an innovation.