Research data_Exploring effects of temporal perspectives on life cycle climate impact and costs in building renovation
Description
This dataset supports a life‑cycle assessment (LCA) and whole life costing (WLC) study of renovation packages applied to a multi‑residential building in a subarctic climate. The research compares aggregated to time-resolved results and considers future developments through temporal parameters (e.g., energy‑mix decarbonisation and price escalation). The dataset contains input data, assumptions, and calculation outputs related to the LCA‑GWP and WLC results presented in the associated article. Included data cover: (i) input data and calibration for building energy simulations; (ii) the building’s initial energy performance and the change in energy use resulting from individual renovation measures and combined renovation packages; (iii) material quantities, transportation distances, environmental product declarations (EPDs), and energy mix emission factors used to calculate climate impacts; and (iv) renovation costs, energy prices, rental income assumptions, and discount and escalation rates used in the WLC. The calculated results provide annual, time‑resolved life cycle climate impacts and costs for each renovation package over a 100‑year reference study period, as well as corresponding aggregated results. Sensitivity analyses are included to examine the effects of higher energy‑price escalation rates, higher renovation‑cost escalation rates, improved material‑production technologies (reducing embodied emissions), and decarbonising energy mixes under both Swedish and EU‑average assumptions. The data show that the comparison between renovation packages can change over time as climate impacts and costs accumulate, particularly under decarbonisation scenarios. The results compare aggregated versus time‑resolved outcomes, and shows how temporal assumptions affect long‑term renovation performance.
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Steps to reproduce
Data were generated through an integrated workflow combining building energy simulation, LCA, and WLC. Input data for the energy simulations—including architectural drawings, construction details, and measured historical energy use—were provided by the housing company owning the building. Building energy performance before and after renovation was simulated and calibrated using BIM Energy, with calibration based on measured monthly energy use. Material quantities and investment costs for renovation measures were obtained from contractors’ tenders associated with the case study building. These data were used to define both initial renovation measures and recurring interventions over the reference study period based on assumed service lives. Climate impacts were quantified as global warming potential (GWP) using One Click LCA, adhering to EN 15978. EPDs were used as the primary source for material‑related emission factors, supplemented with assumptions for future changes in material production, transport, and energy supply in sensitivity analyses. WLC was performed using a net present value (NPV) approach and followed ISO 15686-5:2017, ISO 16627:2015, and guidelines from the Swedish National Property Board. Cost inputs include renovation investments, recurring maintenance and replacement costs, operational energy costs, and rental income assumptions. Sensitivity analyses were performed by varying temporal parameters such as energy prices, renovation costs, emissions related to material production, and energy‑mix emission factors.
Institutions
- Luleå University of TechnologyNorrbotten, Luleå
Categories
Funders
- Lulebo AB