Housing Association “KALDA 64” KALDA 64

The Housing Association carried out complex energy efficiency renovation, including both the building’s energy efficiency, heating and electricity systems. Solar PV panels (40 kW) were installed on the roof. The apartment association Kalda 64 (56 apartments) was established as a registered NGO in 1998, thus, no special organisation was established for joint electricity production (as the NGO already existed). One of the specialities of the project is the fact that both the architecture and the roof of the building are more complex than with average residential buildings. Therefore, several inverters and optimizers had to be installed, thus, the cost is higher than for conventional projects. At the same time, the apartment owners, as members of the housing association, are convinced of the necessity and the benefits of the whole renovation process, including PV installations.