Energy performance of existing buildings Energy efficiency of new buildings Tools for measuring energy performance Apartment Association Reconstruction Cost Calculator Arvutusliku energiamärgise kalkulaator projekteerijale Here you will find the tools required for measuring energy efficiency. We update our data continuously. Tools for measuring energy efficiency Degree days Degree days Please note! Starting from September 1, 2024, degree day information will be available on the Ministry of Climate's website, and the data will be accessible through the building register (ehitisregister).