The Dynamic Perspective of the Energy Performance Certification (EPC)
E-DYCE Digital Energy Performance Certification is rather complementary and not competitive to traditional EPC methodologies, advising for buildings’ swift energy optimization and realization of savings, helping a better approach to the matter
E-DYCE Dynamic EPC
Innovation 1. Improved assessment reducing or eliminating the performance gap with real time optimization
The current labelling evaluates the intrinsic performance of the building and the technical installation choices. The proposed E-DYCE methodology extends the assessment to the building operation excluding good and expensive energy choices, but promoting cheap low-tech technologies, and/or passive operation strategies taking advantage of cloud databases, connected devices, dynamic climatic data and predictions available on the cloud.
In contrast to existing EPCs, with E-DYCE it will be possible to optimize in real time, manage peak demand and grid communication in real time, conduct short term forecasts in real time and modify the building’s operation according to its predicted performance, allowing to maximize the effect of low tech, passive solutions and free running operation.
So, in E-DYCE the first level is to adjust calculation approach to dynamic one. The second level is to optimize building based on its real operation under current boundary condition. The third level is to be able to predict performance when applying renovation strategies. The fourth level is to be able to take account for predictive control of the building by using statistical data and weather forecasts.
Innovation 2. Free running potential
Steady-state approach can be used to define the expected energy need of a building under constant HVAC efficiency and building operational schemes.
Innovation 3. Technology neutral and technology scaling
E-DYCE is designed to be a technology neutral methodology, as its core components (data collection, intelligent framework and user feedback) are not specific to a type of technology and can be substituted with components of own choice.
Equally, low-tech buildings (traditional, heritage or low-income houses) will not be excluded in DEPC; they altogether will be exploited in the dynamic simulations with real time higher data frequencies, which will effectively eliminate the performance gap. The users will receive reliable feedback and will be able to adjust their behaviour to optimize performance based on the free running model.
Innovation 4. Consideration of different data frequency for enhanced performance and comfort
Traditional EPC are only taking into account the building energy performance, omitting indoor environment (comfort) and health related aspects.
Innovation 5. User/operator - human smartness
Building users/operators have difficulties in relating energy use of the building with their actions as energy bills arrive relatively seldom and not correlate with the instantaneous actions.
Nowadays, instead of being only consumers, buildings are becoming prosumers that interact with the grid. Current labelling provide a static number describing expected annual total energy use per square meter of floor area, but this level of frequency is not sufficient to asses building potential for energy flexibility and prosumer nature, as this is supported in E-DYCE to be done with fine frequency, for example assisting in ability of shifting peak hours for heating, cooling and electricity demand, ability to operate building without mechanical resources for securing thermal and atmospheric comfort, namely free running and ability of smart passive technologies to remedy heating and cooling demand.