The following measures are envisaged to increase energy efficiency in 37 public buildings: users’ awareness raising of energy efficiency, thermal insulation of the building envelope (17,613 m2; 150 mm insulation thickness) and replacement of 14,090 m2 windows and doors (U-value 1,1). In terms of renewables, it is foreseen to install solar PV on 53 public buildings and a new solar roof-top PV installation of 2,814.4 kWp. In addition, the replacement of old heating boilers with a RES system will be done in 20 public buildings: Public lighting optimization will also be done through the replacement of 865 poles, 850 lamps (LED technology), replacement of 20 km cables and conversion of lighting stations to 40 pcs.
The Investment Concept will focus on 4 main points:
In Velenje, there will be the renovation and optimisation of the District Heating network (pipelines) and upgrading it to a smart distribution system. There will also be the replacement of coal-based heat generation with an alternative energy source. The project envisages the installation of either one or a combination of Solar Thermal, Solar PV, Biomass or geothermal energy sources. It also envisages the installation of high-voltage (HV) -electrode boilers and a heat storage tank.
The study should address the gradual transition and connectivity of dispersed energy sources, all of which lead to a common goal of 100% replacement of existing coal resources. The feasibility study should be based on existing documents and be carried out in the phase of preparation of basic investment documentation together with the certification of technologies for heat production from RES and economic justification according to the technological needs of the system.