DigiAudit

The project aimed to improve the energy performance and indoor climate of buildings through digital monitoring and management. Real-time monitoring of energy consumption and indoor climate enables automatic analysis of the energy use and indoor climate parameters of buildings, identification of inconsistencies, and comparison of buildings. 

The project focused mainly on educational buildings, but the developed solution will benefit all property owners with a portfolio of buildings. 

DigiAudit solution has four main components: interfaces with external data sources (e-Elering, Utilitas, Building Registry, Weather Service, Nordpool), operational database, analytics (algorithms) and user interface.  

The pilot was mainly based on the data collected from pilot buildings in Tartu and TalTech campus. Data is collected from energy meters (main meters and submeters) and from indoor climate sensors (indoor air CO2 concentration and temperature). Additional data is collected through API connections from Building Registry (building information), Weather Service (outdoor temperature) and when needed from energy companies (Elering and Utilitas). Data is aggregated and stored in an operational database. 

Energy algorithms calculate the energy use (heat and electricity), energy balance (energy used for heating, ventilation, hot water, lighting, etc) and energy performance certificate (EPC). Benchmarking algorithm compares calculated EPC with other EPCs issued to the same type of buildings to give a comparison with overall building stock.  

See the service created based on this pilot project “Real-Time Building Energy Performance Audit“.

Duration of the pilot project: January 2020 – May 2023
Total budget: 1.5M €, including 1 124 498 € TalTech budget.

​The pilot project was funded by the European Regional Development Fund and the Estonian Ministry of Research and Education.​