Follower island: complex of Chios-Inousses-Psara


Energy profile:

The total annual electricity consumption is almost 200.000 MWh (1.800 MWh in Psara). The most energy-consuming sector is the residential buildings, as it occupies a merit of 52%, whereas 31.9% of it is consumed by the commercial sector. The RES share in electricity production in 2017 was 13.5%. The maximum peak load demand in 2016 was 46.8 MWe.

Electricity production peaks take place twice during a year, one in August and one in January, mainly attributed to increased heating needs during winter and the introduction of tourists during summer, since in Psara, the population during summer period is increased by 65%. 10 heavy oil engines are installed at the Autonomous Power Production Station of Chios of 70 MWe.

Regarding renewable energy, currently there are 12 wind parks with a total installed capacity of 9,08 MWe. Moreover, there are 50 ground-mounted PV systems for power generation and supply to the grid with a total capacity of 5.2 MWp.

In addition, there are 5 fields of PV panels with tracking capabilities with an installed capacity of 0.5 MWp and total installed capacity of rooftop PV systems is 1.61 MWp. In INSULAE Psara aims to come in position to act autonomously in all three energy vectors (electricity, heating/cooling, water) and any excess of energy produced to be transferred through an underwater cable to the rest of two islands.

Grid profile:

The Archipelago islands are mainly interconnected with each-other with the use of HV/MV Underwater Cables. More specifically, there are two 20 kV underwater cables that interconnect Psara with Chios. Additionally, there is one more underwater cable with the same voltage capacity that interconnects Inousses with Chios.

Goals and objectives:

Potential innovations to be implemented and main challenges:

Taking into account that an interconnection with the Mainland is not foreseen, the replication of the use cases proposed by INSULAE is a unique opportunity for the reduction of the energy cost and the decarbonisation of the local system.

At the proposal stage, the most attractive use cases for Psara are the ones to be tested in the Unije, as well as the Madeira new approaches to storage.

Main use cases for replication: