Eunice Energy Group (EEG) is developing the AEGEAN Project with a total wind energy capacity of 582 MW on remote and uninhabited islets of the Aegean Sea of the Cyclades and Dodecanese complex.
The installation of wind farms on small islets has the advantage of harnessing offshore wind conditions, while avoiding demanding foundations and installation processes, which are technically critical for typical offshore installations.
AEGEAN Project comprises of three groups of wind farms, including 138 wind turbines in 23 islets of the Aegean Sea. Each group has received Production Licenses issued by the Regulatory Authority for Energy, RAE (www.rae.gr).
The licensing process is duly followed aiming to plan a Project that optimises the exploitation of the wind energy resource, but also minimises the impact to the environment. Synergies are also strong in the course of the AEGEAN Project since its interconnection shall be slightly extended in order to include the existing insular power complex of Kos-Kalymnos; thus, reducing the fuel cost of the existing diesel-fuelled power stations and significantly improving the power quality of the insular grid. Furtherly, since the three groups of wind farms utilize only 38% of the interconnection’s transmission capacity and since the interconnection shall link non-interconnected insular grids with the mainland, the project offers the chance for further development of RES Projects on the systems above while today this is impossible. This shall enable small communities, Small and Medium Enterprises (SMEs) and the local shareholders to activate themselves in the energy market as producers.
The interconnection infrastructure consists of a HV Direct Current (DC) submarine transmission link connecting the groups of wind farms to the mainland electricity grid. The transmission capacity of the link will be up to 700 MW in both directions, while it requires the installation of two converter stations, one on the project’s central connection point acting as a hub, and the other located on mainland. For increased availability, the HVDC link will consist of two parallel cables.
The generated electricity on each islet will be transmitted via a closed type GIS substation and high voltage AC underwater cables to the central connection hub, where the HVDC link converter station is located. The voltage level ranges between 150kV and 220kV.
The interconnection of the AEGEAN Project has been included in the ten-year development plan of ENTSO-E. ENTSO-E is the European Network of Transmission System Operators, representing 42 electricity transmission system operators (TSOs) from 35 countries across Europe. ENTSO-E was established by European TSOs with a mandate by the EU’s Third Legislative Package for the Internal Energy Market in 2009, which aims at further liberalising the gas and electricity markets in the EU.
Initially, the interconnection of the AEGEAN Project has been included in “The Ten Year Network Development Plan, TYNDP” of 2014 under the title “South Aegean Interconnector” and successfully remained in the plan’s recent update of 2016 (TYNDP 2016).
For more information click www.entsoe.eu
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