Ελληνική έκδοση

HEDNO is the main DSO in Greece responsible for the distribution network in the whole country. The total length of Network 228.900 km, of which the Medium Voltage Network (M.V) is 107.500 km and L.V 121.400 km. HEDNO is responsible to 154.950 MV/LV Substations and 224 HV/MV Substations. The installation of distributed generation (mainly PVs) makes the management of the distribution network difficult. HEDNO is also the operator of the Non-Interconnected Systems in Greece, namely the islands that is not interconnected with the main grid. The second Greek demo site is an island called Kythnos. Kythnos is an island and a municipality in the Western Cyclades with a population of 1.632 people. Kythnos has a thermal generation installed capacity of 4.97 MW with a peak power consumption of 2.7 MW. It has medium voltage and low voltage distribution lines. Kythnos was the site for the first European PV plant installation.

  • 1982 → Installation of the 1st wind park in Europe (5 x 20kW)
  • 1983 → Installation of 100kW PV system coupled with battery storage (400kWh)
  • 1989 → Replacement of the wind turbines (5 x 33kW)
  • 1992 → Inverters in the PV system
  • 1998 → Installation of the new Vestas 500kW wind turbine
  • 2000 → Operation of the SMA fully automatic control system
  • 2001 → Operation of the Gaidouromantra microgrid

Kythnos pilot site – Infrastructure

The electricity mix of Kythnos Island is dominated by diesel and fuel oil.

  • local power station, constructed by Public Power Corporation S.A. in 1964
  • 4 MWM generating sets of 0.53 MW rated power each,
  • 2 ΜITSUBISHI generating sets of 1.275 MW rated power each
  • and 1 ΜITSUBISHI generating set of 1.250 MW
  • 15kV Medium Voltage distribution grid – 3 lines – 87 km in total


27 April - 7pm: citizen’s engagement workshop. 

More information can be found here!

Kythnos pilot site – Services and applications

Currently the management of the electrical system is carried out by the thermal power plant. A central Energy Control Centres (ECC) in Athens and a local ECC on the island are to be established by HEDNO.

  • Central ECC – Executes the Rolling Day Ahead Scheduling (RDAS) and billing
  • Local ECC – Conducts the Dispatch Scheduling (DS) and Real Time Dispatch (RTD)
  • Market opening derogation until infrastructure is in place

NOTE: please note that as the project is developing in a dynamic way, changes are always possible.

Active participation by citizens in decision-making processes for local development

In the last couple of months the project has organised 4 citizen engagement workshop in 4 different pilot sites in Greece, Spain, Belgium and Italy. These pilot site workshops were planned and designed to contribute to the overall project objectives to include citizens in the different decision-making processes. The community engagement workshops informed the citizens about the deployment of the WiseGRID tools in their neighborhood and provided a platform to ask questions and to give feedback and suggestions. 

We gathered feedback of each workshop:

27 April 2018 - Kythnos



07 Jun

Recruitment workshop Kythnos, Kythnos

The recruitment workshop was held 2017/06/07 in Kythnos island with local citizens, WiseGRID project leaders and local municipality officials.

The meeting included a small introduction to WiseGRID project, previous projects overview in the island, an introduction speech of the Mayor of the Island, a discussion session with local citizens and participants.

The goal for this recruitment workshop was to raise awareness and recruit as much as possible people in order to bring more awareness to local pilot site in Kythnos. The event held initiated important discussions and main questions and emerged local participants to be involved in the project.

27 Apr

Citizen workshop: Smarter systems. Empowered citizens, Kythnos, Greece

Questions ?

Do you have questions about the project, tools or pilot sites? Let us know.