More information about DigiAudit pilot project
Soaring energy prices in 2021 are caused by a combination of factors resulting with a mismatch between supply and demand side. The owner of the building has few opportunities to produce energy, but many opportunities to monitor and, if necessary, manage consumption. One of the first steps is to find out where and how much energy is being used. For a single building level, this is a relatively simple task. For building owners with larger building portfolio, who have to manage dozens or hundreds of buildings, it is a rather complex and time-consuming task. DigiAudit project has 45 pilot buildings from Tallinn University of Technology, city of Tartu and city of Tallinn. The current conventional method (analysis of energy bills) would be a time-consuming and costly task and should be repeated monthly and yearly to provide an up-to-date overview.
With digital real-time energy management, it is possible to create an initial overview of a building portfolio in minutes. With the permission of the building owner, data of the electricity use can be obtained through Estfeed for all buildings with electricity connection. Larger district heating companies also enable the exchange of the heat energy use (for example, Utilitas). If we add the data of the building from the Register of Buildings (building type and heated area) and the data of the outdoor temperature, we have all necessary preconditions to create an automated Energy Performance Certificate (EPC) that is renewed in real time.
The energy use of the buildings of Tallinn University of Technology analyzed within the framework of the DigiAudit project shows that the picture is quite mixed for the larger building portfolio. The full scale of energy labels (A → H) is represented. 35 buildings with a total annual energy cost of ~ 2 million euros were analyzed.
