Estimation of climate change impact on energy consumption in a residential building in Kaunas, Lithuania, using HEED Software

The results show a smaller overall energy consumption. The changes were observed in all scenarios and periods, from a drop by 8.5 %-10.3 % in total consumption in the 2020s under RCP2.6 scenario to 26.7 %-29.6 % decrease in case of the 2080s RCP8.5 scenario (the decrease by 15 %-15.6 % was observed under RCP8.5 scenario). The dramatic decrease is due to a decreased number of days when space heating is needed, while a slight increase of a cooling load in a modelled house still does not make it dominant over a heating load.