Identification of cost-optimal levels for energy refurbishment of a residential building stock under different scenarios: Application at the urban scale

Fernandez-Luzuriaga, Jon; Portillo, Luis del; Flores-Abascal, Iván

doi:10.1016/j.enbuild.2021.110880

Cited by 16 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, the geographical location that has an impact on building typologies, climate, national standards, and other aspects varies between studies. Studies have been conducted for Greece [18], Ireland [19], Italy [12,[20][21][22], Sweden [23], Spain [24,25], UK [9], Bulgaria, Serbia, Hungary, and the Czech Republic [26].…”

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Predicting Energy Savings of the UK Housing Stock under a Step-by-Step Energy Retrofit Scenario towards Net-Zero

et al. 2022

View full text Add to dashboard Cite

The UK has one of the least energy-efficient housing stocks in Europe. By 2030, the emissions from UK homes need to fall by at least 24% from 1990 levels to meet the UK’s ambitious goal, which is reaching net-zero emissions. The originality of this paper is to apply the building typology approach to predict energy savings of the UK housing stock under a step-by-step energy retrofit scenario, targeting the Passive House Standard for refurbishments of existing buildings, namely the EnerPHit “Quality-Approved Energy Retrofit with Passive House Components.” The typologies consist of twenty reference buildings, representative of five construction ages and four building sizes. The energy balance of the UK residential buildings was created and validated against statistical data. A building stock retrofit plan specifying the order in which to apply energy efficiency measures was elaborated, and energy savings were calculated. The predicted total energy demand for the UK residential building stock for the year 2022 is 37.7 MTOE, and the carbon emissions estimation is 65.33 MtCO2e. The energy-saving potential is 87%, and carbon reductions are about 76%, considering all the steps of renovation applied. It has been demonstrated that the step that provides the biggest savings across the housing stock is the one that involves replacing windows, draught-proofing, and installing mechanical ventilation with heat recovery.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

“…Second, renovation scenarios also differ between studies. Some studies aimed to meet the specific energy targets of national regulations [19,23,24], while others modelled more ambitious scenarios targeting higher energy efficiency standards [9, 12,18,20,21,25,26].…”

Section: Literature Reviewmentioning

confidence: 99%

Predicting Energy Savings of the UK Housing Stock under a Step-by-Step Energy Retrofit Scenario towards Net-Zero

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The article [21] deals with the search for a cost-optimal level of energy consumption in buildings. The cost-optimal level should be used to set cost-effective minimum legislative requirements for newly built or renovated buildings with regard to the lowest possible total costs and with a minimized impact on the environment, i.e., with the minimum primary energy consumed.…”

Section: Life Cycle Assessment (Lca)mentioning

confidence: 99%

“…To determine the cost optimum, parameters such as different values of the heat transfer coefficient of peripheral structures, various heating sources, methods of water heating, ventilation systems, lighting, etc., are alternatively determined for reference buildings. This article is followed in a given field of research, for example, by articles [21][22][23]. In connection with these legislative requirements, many biogas plants have been built, where energy is obtained from plant biomass.…”

Section: Life Cycle Assessment (Lca)mentioning

confidence: 99%

Residential Construction with a Focus on Evaluation of the Life Cycle of Buildings

et al. 2021

View full text Add to dashboard Cite

The article focuses on highlighting the role of life cycle costing (LCC) in the preparatory and implementation phase of residential projects. It involves the evaluation of several investment scenarios in the pre-investment phase, the choice between variants of the design of the entire building or its parts, and the choice of variants of structures and equipment with acceptable parameters. An innovative method of evaluating the life cycle of buildings is described in the article. This method was tested in selected residential projects realized by Skanska in the Czech Republic. Experience from construction practice shows that the choice of variants, constructions, or equipment of buildings only on the basis of the lowest acquisition costs (lowest bid prices) is wrong. The LCC calculation tool has been designed to model life cycle costs of individual variants of construction designs with different input parameters. It is possible to analyze the components or equipment that have the greatest impact on total life cycle costs. The article presents a tool that evaluates the long-term economic efficiency of the proposed residential buildings in terms of analysis of life cycle costs. The article will also expand the knowledge of the professional and general public about the importance of examining investment and operating costs already in the phase of construction preparation.

show abstract

“…Other studies dealing with the cost-effectiveness of energy retrofit investments have used the building typology approach, which consists in the use of representative buildings or building types identified and classified in function of specific aspects (e.g., building use, building age, building size and climatic zone) [44]. Some of these works have dealt with residential buildings [31,[48][49][50][51][52][53][54][55][56]. For example, Ascione et al [56], by using a reference multi-family housing in the city of Naples, applied economic methods to select the best profitable packages of energy efficiency.…”

Section: A Brief Review On the Economic Evaluation Of Building Renovation Investmentsmentioning

confidence: 99%

A Staged Approach for Energy Retrofitting an Old Service Building: A Cost-Optimal Assessment

et al. 2021

View full text Add to dashboard Cite

Office buildings built before the pre-1960 age constitute a relevant group for analyzing the energy performance of the Portuguese building sector. A dynamic energy simulation was used to assess the energy performance of an existing office building located in the town of Bragança, Portugal. By using a staged renovation approach, two passive technologies applied to the building envelope and an efficient domestic hot water system were selected and a financial evaluation through the net saving (NS) method was undertaken to choose the best efficiency measures/packages for improving the building’s energy performance. Real discount rates of 3% and 1% were used in the financial evaluation. Considering the real discount rate of 3%, the results showed that only two out seven retrofit options had a positive financial return. By using the real discount rate of 1%, all retrofit options were found to be financially efficient. The results of the study corroborated those of earlier works that found that the financial profitability of energy renovation investments is very sensitive to the discount rate used in the analysis. The results of the study also suggested that the staged renovation approach used in the analysis is economically feasible, and that this approach is an alternative to one-step renovation approach to help to achieve the country´s energy and climate targets by 2030. Suggestions for future research conducted for office buildings in the different climate zones and other age groups in Portugal are proposed.

show abstract

Identification of cost-optimal levels for energy refurbishment of a residential building stock under different scenarios: Application at the urban scale

Cited by 16 publications

References 45 publications

Predicting Energy Savings of the UK Housing Stock under a Step-by-Step Energy Retrofit Scenario towards Net-Zero

Predicting Energy Savings of the UK Housing Stock under a Step-by-Step Energy Retrofit Scenario towards Net-Zero

Residential Construction with a Focus on Evaluation of the Life Cycle of Buildings

A Staged Approach for Energy Retrofitting an Old Service Building: A Cost-Optimal Assessment

Contact Info

Product

Resources

About