In the rapidly evolving energy landscape, buildings are emerging as unlikely heroes in the quest for grid stability and sustainability. A recent study published in the journal *Green Energy and Sustainability* (translated from Greek as *Green Energy and Sustainability*), led by Georgios Chantzis from the Process Equipment Design Laboratory at the Aristotle University of Thessaloniki, sheds light on the crucial role buildings can play in demand side management (DSM). The research delves into the concept of energy flexibility, a term that is gaining traction in the energy sector as renewable energy sources continue to disrupt traditional supply-side management.
Chantzis and his team argue that buildings, which account for a staggering 39% of global final energy use, are prime candidates for implementing demand response models. “Buildings are not just passive consumers of energy; they can be active participants in the energy ecosystem,” Chantzis explains. By leveraging the thermal efficiency of building shells and the energy efficiency of HVAC systems, buildings can provide the necessary flexibility to balance intermittent energy production from renewable sources.
The study highlights the lack of a standardized method for quantifying the energy flexibility of buildings. “Currently, there is no fixed and consistent method for evaluating the amount of flexibility a building can provide to future energy systems,” Chantzis notes. This gap in the market presents a significant opportunity for innovation and development in the energy sector.
The research offers an overview of the literature on building energy flexibility and introduces the methodologies used to define and evaluate it. By establishing a formal, standard, and robust method for characterizing energy flexibility, the study paves the way for buildings to become integral players in energy networks. This shift could have profound implications for the energy sector, enabling more efficient energy management and reducing the reliance on traditional power plants.
The commercial impacts of this research are substantial. Energy providers could benefit from more predictable and manageable energy demand, while building owners could potentially reduce their energy costs by participating in demand response programs. Moreover, the integration of buildings into energy networks could accelerate the transition to renewable energy sources, contributing to global sustainability goals.
As the energy sector continues to evolve, the role of buildings in demand side management is likely to become increasingly important. Chantzis’ research provides a valuable foundation for future developments in this field, offering insights into the methodologies and key performance indicators (KPIs) that will shape the energy flexibility of buildings. By embracing the concept of energy flexibility, the energy sector can unlock new opportunities for innovation and sustainability, ultimately benefiting both businesses and consumers.

