With its turn to be the European Green Capital on the horizon, the City of Ljubljana needed to take action on upgrading old buildings. To leverage technical expertise and secure financing, the City created a public-private partnership (PPP) with Petrol, the largest Slovenian energy company, and Resalta, an energy services company (ESCO).
Since 2017, the partners have renovated 48 public buildings, including schools, libraries, cultural institutions, sports centres, etc. Twenty-five of the projects were done to standards qualifying for deep energy renovation while actions possible on some buildings were constrained by their heritage status. Even so, the initiative achieved an average energy reduction of 70% to 85%. The City’s energy bills have been slashed by €1m annually while building occupants benefit from greater comfort. This innovative approach won the PPP an award from the EU-funded project known as GuarantEE.