Unclogging the grid
a study on how deep energy renovations can reduce the load on the electrical energy grid and create a self-sufficient building
D.A. Klijn (TU Delft - Architecture and the Built Environment)
T. Offermans – Mentor (TU Delft - Architectural Technology)
P.L. Tomesen – Mentor (TU Delft - Architectural Technology)
S. Broersma – Mentor (TU Delft - Environmental & Climate Design)
M.F. Asselbergs – Coach (TU Delft - Architectural Technology)
C.E.L. Newton – Coach (TU Delft - Spatial Planning and Strategy)
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Abstract
With the rise of all-electric buildings the load on the electrical grid grows. This could slow down the energy transition and densification of existing neighbourhoods as the current grid is not capable to withstand a higher load. This research gathers literature on different peak shaving techniques to create a clear overview and investigates the impact on the load profile when techniques are combined. This new insight in combined techniques will provide a solid basis to develop a more detailed modelling tool to simulate the actual energy use and generation on a daily and annual basis. The load profiles of these techniques are combined with the existing energy demand curve to see how these techniques reduce peak loads that occur during the day. To asses the influence on the annual load curve the ZED-tool was used to simulate peak shaving techniques on a case-study building. The results show that a combination of outside insulation, sun shading and a heat pump flatten the daily and annual load profile significantly. However the implementation of east and west facing façade PV in combination with wind energy decreases the peak loads the most. Finally when all techniques are combined with a battery a building block can become not only energy neutral but almost self sufficient.
These research results were developed into a design for the renovation of a post-war appartmentbuilding in Haarlem Schalkwijk. In the new design other topics like densification, flexibility and climate adaptation were addressed as well to improve the post-war neighbourhood. This design is a base for a bigger renovation strategy that could be implemented in multiple post-war neighbourhoods in the Netherlands.