In April last year, the City of Ljubljana agreed a public-private partnership (PPP) with a consortium of GGE and Petrol for the energy retrofitting of public buildings in the municipality. The EUR 14.9 million project will deliver energy savings of 8,245 MWh annually and a reduction of 2,956 tons of CO2 emissions each year.
Among the buildings retrofitted were sports halls, elementary schools, kindergartens, administrative buildings, health centers and other public facilities. Measures implemented included the renovation of heating, ventilation, and air conditioning (HVAC) systems, the replacement of interior lighting with more energy-efficient equipment, the replacement of existing heating systems with systems that will exploit renewable energy sources, the replacement of windows and doors, the renovation of facades, and the insulation of roofs.
The second energy retrofit project will include primary schools, kindergartens, sports centers and municipal buildings. The annual energy saved by this investment stands at 2,260 MWh per year, while CO2 emissions will be reduced by 459t each year. The total investment is EUR 4.8 million, with contract duration set at 15 years, during which the consortium will provide management and maintenance.
The measures implemented will be similar to the first project, and include thermal envelope, HVAC systems and lighting renovations. Energy systems will be where possible replaced with renewable energy systems, and the project will also replace windows, doors and improve insulation, while also installing energy management systems and other tools for optimizing energy consumption.