The investment project will promote energy efficiency and RES with the most cost-effective projects. Firstly, 95 public buildings (40 offices and 55 schools), 100 private offices and 1,000 buildings in the residential sector constructed before 2000 will be renovated. The combination of the interventions will include the insulation of the building envelope (external walls, roof and windows with double glazes), the installation of heat pumps, the installation of energy-efficient lighting systems and the production of electricity from photovoltaics. Secondly, 7 MW of RES stations will be installed (5 MW photovoltaic, 1 MW biomass and 1 MW small hydro stations) through the energy community. The energy for waste-water treatment and irrigation will be reduced, e-mobility will be promoted (520 vehicles) and in 1000 households energy poverty will be combated.
The investment concept focuses on upgrading the municipal building stock and the street lighting network in the Municipality of Korydallos including installation of building-scale renewables mainly at schools. The following interventions will be considered:
- Buildings: Thermal insulation of envelope, heat pumps, thermal insulation of systems for the distribution of heat within the buildings, upgrade of lighting system, building management systems
- Renewables: Installation of solar panels on the rooftops of buildings
- LED bulbs in street lighting
The interventions above are expected to lead to energy savings that are more than 70% of the current energy use contributing at the same type to the electrification of the building stock and moving towards independence from fossil fuels. Moreover, the city has allocated 1,5 million € through the funding of the development coalition of Western Attica Municipalities for energy upgrade of specific residential buildings.
In the Municipality of Kozani (MoK) there are around 18.300 private residential buildings, mainly built before 2000, having poor energy efficiency and therefore high energy needs. Their large number comparing to the other buildings, explains the large potential of this sector. Thermal insulation of walls, floors and ceilings, replacement of windows with double glazed ones, installation of solar thermals and upgrade of their heating systems are the main actions to be followed minimizing buildings’ energy needs to up to 40%
Pedestrian mobility actions should be the stepping stone to achieve sustainable mobility. Moreover, to achieve this goal, the municipal fleet with its around 170 vehicles, the public transportation and private vehicles in the MoK based on fossil fuels, should be replaced with new more effective ones, battery electric and fuel cell electric ones. A concrete plan for this replacement and also the upgrade of the infrastructure to support this change is required.
The investment concept focuses on the retrofit of municipal buildings including integration of building-scale renewables, upgrade of public lighting and electrification of the municipal fleet. The following interventions will be considered:
- Buildings: thermal insulation of the envelope of the buildings (walls, roof, windows), energy upgrade of HVAC systems and lighting equipment, replacement of equipment at schools with energy efficient ones, installation of solar PV on building rooftops
- Public lighting: upgrade with LEDs and automations for controlling of its operation
- Municipal fleet: electric vehicles and charging points
The measures are expected to lead to energy savings of up to 55% in total without taking into account building-integrated renewables.
The investment project aims at promoting cost-effective technologies, fostering the major renovation of the buildings and promoting sustainable mobility. Firstly, 48 public buildings (20 offices and 28 schools), 150 private offices and 2,000 buildings of the residential sector constructed before 2000 will be renovated. The combination of the interventions includes the insulation of the building envelope (external walls, roof and windows with double glazes), the installation of heat pumps for the coverage of heating and cooling demand, the installation of energy-efficient lighting systems and the production of renewable energy from photovoltaics for self-consumption.
Moreover, electric chargers (50 units) will be installed fostering the deployment of electric vehicles (20 light and 20 heavy-duty municipal vehicles and 1,000 passenger vehicles). The planned investments will ensure the cost-benefit achievement of the climate targets.
The proposed system consists of a hydrogen production unit combined with a PV (800 kW) unit (local and virtual net metering). The hydrogen (consumed directly or stored in a pressurized tank) will be produced by an electrolyser fed solely by PV electricity. The system will be connected with one H₂ refuelling station, equipped with Fuel Cells and a Hydrogen (FCH) storage system to provide stability in supply. Four such systems will be deployed (one in each municipality).
The produced H₂ in the refuelling stations will be fed into the new FCH municipal fleet (sweepers, bikes, mini-buses, rubbish trucks, etc.), as well as the private vehicles with FCH technology. The new FCH municipal vehicles will cover both the authority's and the citizens' mobility and transportation needs. The private FCH vehicles are also a market segment targeted by the stations for refuelling services. One FCH train is also expected to be deployed by Agioi Anargyroi-Kamatero municipality, for intra-municipal mobility needs.
The investment concept focuses on the energy upgrade of buildings and public lighting, the installation of building-scale renewables as well as the electrification of the municipal fleet.
The following interventions will be considered. In buildings, there will be thermal insulation of the envelope of the buildings (walls, roof, windows) and the energy upgrade of HVAC systems and lighting systems. Overall, there will be the installation of building-integrated renewables to meet the remaining energy demand with non-fossil fuel energy. They also plan the electrification of the municipal fleet; an upgrade of public lighting from conventional lamps to LEDs and the development of local "Green" Recycle Corners in each district across the entire municipal geographical boundaries.