The inherent thermal storage capacity of buildings – potential for load shifting with electricity powered heating systems (original) (raw)

The ever-increasing installation of renewable electricity generation with volatile feed-in comes hand in hand with the challenge of matching generation and demand at all times, and induces the need for energy storage and more flexible demand. Thereby, the large and predictable thermal demand of the building stock could contribute flexibility if electricity powered heating systems are used. This simulation based analysis indicates great potential for load shifting by the activation of structural thermal building mass with electric heating systems. Depending on the utilized system, load shifting of few hours and up to many days is feasible, with just limited impact upon user comfort. Further, storage efficiencies in range of 88 % to 96 % are detected.