Energy flexibility and resiliency analysis of old and new single family buildings in Nordic climate

Hassam Rehman (Corresponding author), Ala Hasan

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)
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Climate change and energy crises are the two challenges faced by societies. To address these issues, buildings have to be both flexible and resilient. The aim of this paper is to simulate and compare the performance of two types of a single-family house, i.e. an old building (1970) and a new building (2000), integrated with and without photovoltaic (PV) for the two objectives of energy flexibility and energy resilience in the cold climate of Finland. Depending on the PV size, it is found that the old building has a flexibility factor of up to 84% and the new building has 17% and the energy cost reduced. For resilience, the PV made the old building robustness period 15 h and the new building 32 h. With the PV, the amplitude of the buildings failure is lower and the recovery speed is faster. To meet future sustainability and resilience goals, energy resilience and flexibility for different types of buildings have to be studied together, which are impacted by both the characteristics of the bulding’s thermal mass and the onsite energy generation.
Original languageEnglish
Title of host publicationProceedings of Building Simulation 2023
Subtitle of host publication18th Conference of IBPSA
PublisherInternational Building Performance Simulation Association (IBPSA)
Number of pages8
Publication statusPublished - 2023
MoE publication typeA4 Article in a conference publication
Event18th International IBPSA Building Simulation Conference, BS2023 - Radisson Blu Forest Manor Hotel, Shanghai, China
Duration: 4 Sept 20236 Sept 2023

Publication series

SeriesProceedings of the International Building Performance Simulation Association


Conference18th International IBPSA Building Simulation Conference, BS2023
Internet address


The work was funded and supported by the Academy of Finland, under the project name Academy of Finland project “Energy Resilience in Buildings in Extreme Cold Weather Conditions in Finland 2022-2025 (FinERB) [Grant number: 348060]”, Academy of Finland project “Integration of Building Flexibility into Future Energy Systems 2020-2024 (FlexiB) [Decision number: 333364]”. The authors also acknowledges IEA EBC Annex 83 Positive Energy Districts.


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