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Economic feasibility of building retrofitting mitigation potentials : Climate change uncertainties for Swedish cities

Mata, Érika; Wanemark, Joel; Nik, Vahid M. LU and Sasic Kalagasidis, Angela (2019) In Applied Energy 242. p.1022-1035
Abstract

Deep and rapid decarbonization of the building sector requires energy demand reductions and the incorporation of renewable-energy sources. Energy retrofitting of existing buildings is a central strategy in climate mitigation and has often been highlighted as a cost-effective strategy. However, decisions on these strategies are often hampered by modeling assessments that are limited by contextual, methodological, parametric, input, or output constraints. Here, we present a novel methodology to investigate the solid economic feasibility in building retrofit evaluations with mitigation measures. We first calculate the variations in the energy saving potentials and costs for 13 energy saving measures and five climate change scenarios. We... (More)

Deep and rapid decarbonization of the building sector requires energy demand reductions and the incorporation of renewable-energy sources. Energy retrofitting of existing buildings is a central strategy in climate mitigation and has often been highlighted as a cost-effective strategy. However, decisions on these strategies are often hampered by modeling assessments that are limited by contextual, methodological, parametric, input, or output constraints. Here, we present a novel methodology to investigate the solid economic feasibility in building retrofit evaluations with mitigation measures. We first calculate the variations in the energy saving potentials and costs for 13 energy saving measures and five climate change scenarios. We then compare the obtained uncertainty due to a changing climate to other uncertainties, such as the boundaries for emission inventories and energy system development. Four cities in Sweden are modeled, which are responsible for half of the country's residential energy use. We find that the profitability of the retrofitting actions is primarily determined based on the annualized investments and energy saving potentials. Future climate has a less determinant role, with uncertainties similar to those of future consumer price development and fuel emission factors. Retrofits that only affect the energy need for space heating are more robust than changes in electricity usage. We conclude that strategies for building retrofitting should focus on prioritizing energy savings and mobilizing investments that may not be profitable based on the current techno-economic perspective.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Building stock modelling, Climate change, CO mitigation, Cost-efficient renovation, Swedish residential buildings, Uncertainty
in
Applied Energy
volume
242
pages
14 pages
publisher
Elsevier
external identifiers
  • scopus:85063188979
ISSN
0306-2619
DOI
10.1016/j.apenergy.2019.03.042
language
English
LU publication?
yes
id
0ec90f94-1816-41e3-ba15-2727dd5beb4a
date added to LUP
2019-04-01 14:33:55
date last changed
2019-04-23 04:47:59
@article{0ec90f94-1816-41e3-ba15-2727dd5beb4a,
  abstract     = {<p>Deep and rapid decarbonization of the building sector requires energy demand reductions and the incorporation of renewable-energy sources. Energy retrofitting of existing buildings is a central strategy in climate mitigation and has often been highlighted as a cost-effective strategy. However, decisions on these strategies are often hampered by modeling assessments that are limited by contextual, methodological, parametric, input, or output constraints. Here, we present a novel methodology to investigate the solid economic feasibility in building retrofit evaluations with mitigation measures. We first calculate the variations in the energy saving potentials and costs for 13 energy saving measures and five climate change scenarios. We then compare the obtained uncertainty due to a changing climate to other uncertainties, such as the boundaries for emission inventories and energy system development. Four cities in Sweden are modeled, which are responsible for half of the country's residential energy use. We find that the profitability of the retrofitting actions is primarily determined based on the annualized investments and energy saving potentials. Future climate has a less determinant role, with uncertainties similar to those of future consumer price development and fuel emission factors. Retrofits that only affect the energy need for space heating are more robust than changes in electricity usage. We conclude that strategies for building retrofitting should focus on prioritizing energy savings and mobilizing investments that may not be profitable based on the current techno-economic perspective.</p>},
  author       = {Mata, Érika and Wanemark, Joel and Nik, Vahid M. and Sasic Kalagasidis, Angela},
  issn         = {0306-2619},
  keyword      = {Building stock modelling,Climate change,CO mitigation,Cost-efficient renovation,Swedish residential buildings,Uncertainty},
  language     = {eng},
  pages        = {1022--1035},
  publisher    = {Elsevier},
  series       = {Applied Energy},
  title        = {Economic feasibility of building retrofitting mitigation potentials : Climate change uncertainties for Swedish cities},
  url          = {http://dx.doi.org/10.1016/j.apenergy.2019.03.042},
  volume       = {242},
  year         = {2019},
}