| 1. |
- Devendran, Aarthi Aishwarya, 1986-, et al.
(författare)
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Spatial interaction model of energy demand of buildings and satellite thermal imageries using Geographically Weighted Regression analysis
- 2022
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Ingår i: eceee 2022 Summer Study on energy efficiency. - : European Council for an Energy Efficient Economy (ECEEE). - 9789198827002 ; , s. 559-569
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Konferensbidrag (refereegranskat)abstract
- The Energy Performance Certificate (EPC) is an important information tool to improve the energy performance (EP) of buildings. However, establishing the EP of building is tedious, time-consuming, and numerous input parameters are required in its estimation. However, the usefulness of EPC for the implementation of customized solutions by the supply-side actors require that EPCs are available for all buildings, easily accessible, credible, and recent. However, this is not the case at present. This could be addressed by employing remote sensing dataset along with GIS based spatial analysis techniques. In the present study, the spatial regression analysis technique is implemented in identifying the spatial relation between the input variables and the EP of selected 4541 buildings within Växjö municipality, Sweden.The input variables used in the study include the land surface temperature (LST) maps of summer and spring of 2020 derived through the thermal band of Landsat 8 satellite data, built-up and openland neighbourhood maps prepared from the land use/land cover map 2020 of the study region. Building topology including year of construction, type, category, and complexity of buildings are also used to identify the relation between the input variables and the EP of those selected buildings. Results of spatial regression analysis reveal a significant positive relation between the LST and EP of buildings (regression co-efficient are 0.86 and 0.95 in spring and summer respectively).The stronger correlation in summer could be because of the availability of higher intensity of solar radiation which gets absorbed by the built-up regions. Results suggest that the LST maps derived from satellite imageries could provide information on the EP of buildings. This could be beneficial to local decision makers and policy regulators in identifying the buildings with lower EP with better accuracy with less dependence on EPC data which are sometimes not available or not updated. The results could also be beneficial to investment bankers, real estate companies during the purchase and sale of a building. Policy makers and renovation companies could get benefited with the results in preliminary identification of the potential hotspots for district energy renovation where the EP of buildings is poorer. This could help achieve the goal of sustainable urban planning targeting energy reduction, climate adaptation, through implementation of effective energy management strategies in the building sector.
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| 2. |
- Karlin, Beth, et al.
(författare)
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Process matters : Assessing the use of behavioural science methods in applied behavioural programmes
- 2022
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Ingår i: ECEEE 2022 Summer Study on Energy Efficiency : Agents of Change - Agents of Change. - 1653-7025 .- 2001-7960. - 9789198827002 ; , s. 541-549
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Konferensbidrag (refereegranskat)abstract
- Behavioural science methods have significant potential to help policy makers, practitioners and energy programme managers design, implement and evaluate behavioural campaigns addressing hard-to-reach (HTR) energy users. But when facing budget and logistic constraints, how many real-life programmes actually follow through? How are behavioural science methods actually applied in a real-world setting? This paper presents a scientific process for behaviour change programmes - the “Building Blocks of Behaviour Change” - and analyses 19 case studies from seven countries to see how many are actually utilising these methods in practice. The case studies focus specifically on HTR energy users and the authors also share their perspectives in feasibility and acceptability of utilising such a process in their work. We found that most programmes utilised some behavioural science research methods, but few followed a full scientific “best practice” process. Limitations of this study include selection bias (the case studies for analysis were chosen by country experts), design issues and some missing data in the cases with regards to exact methods employed. But it is the first study of its kind, to our knowledge, that takes a look at the extent of how scientific methods are being applied in the real world with HTR energy users. Based on this comparative analysis of the cases and feedback from the case study authors, we present recommendations on how programmes can continue to realistically integrate best practice methods into their programmes while also meeting budget, competency, and timeline constraints.
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| 3. |
- Sula, Migena, 1986-, et al.
(författare)
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Additional Dwelling Units : Can they finance energy renovation?
- 2022
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Ingår i: eceee 2022 Summer Study on energy efficiency: agents of change, European Council for an Energy Efficient Economy (ECEEE), 2022. - : European Council for an Energy Efficient Economy (ECEEE). - 9789198827002 - 9789198827019 ; , s. 1295-1306
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Konferensbidrag (refereegranskat)abstract
- In Northern Europe, Single Family Housings (SFH) constitute a large share of the total building stock. In Sweden, more than 52% of the population lives in SFH. Most of these houses were built between 1960-80 and are currently needing renovation. Most of these houses are owned by older adults whose kids have moved away, and thus they live in housing over-dimensioned to their needs with a large share of energy consumption for space heating. Furthermore, these facilities are neither elderly-friendly nor energy-efficient, deeming major renovation. This paper applies a case-study approach to explore options to better utilize and reduce the living area per capita through the generation of Additional Dwellings Unit (ADU) within the existing building stock owned by the elderly. The case study SFH owned by an elderly couple is located in Kronoberg Region, Sweden, and is a typical SFH built during the 1970s. We redesign and restructure the underused space to create an ADU that can be rented out, which in turn may economize the high investment costs of energy-efficient renovation. The energy efficiency renovation measures considered were improvement of the building's climate shell (envelope), extra insulation in the walls and attic, and better performance doors and windows. Energy simulations and life cycle cost assessment of the energy efficiency measures, and space redesign showed that it is possible to reduce energy use by 61% compared to the existing condition of the reference house and a payback time of 59% compared to the application of the energy measures alone. The proposed intervention is aligned with the aging in place strategy, tackling it from a space sufficiency perspective. The proposed intervention reduces the living space per resident by 40% and energy consumption per capita by 62% compared to just the energy renovation of the reference house while creating cash inflows that motivate the houseowner to uptake an energy renovation. The improved energy performance of the building may generate better indoor living conditions for a healthier life for the residents.
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| 4. |
- Åberg, Magnus, 1980-, et al.
(författare)
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Is ‘the social’ forgotten? : Aspirations and understandings of Energy Communities
- 2022
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Ingår i: eceee 2022 Summer Study proceedings. - Stockholm : European Council for an Energy Efficient Economy (ECEEE). - 9789198827002 - 9789198827019 ; , s. 613-622
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Konferensbidrag (refereegranskat)abstract
- Energy communities (ECs) is a concept which has been around for decades in various forms, but which has not been explicitly defined or regulated by policymakers until the introduction of the Clean Energy for all Europeans package in 2019. Since then, the EU provides a legal framework for ECs which will guide the creation and management of ECs within member states. From a policy perspective, an EC is regarded as a way to organize collective energy actions in an open and participatory way to provide benefits for members of local communities and opportunities for citizens to get engaged with the transformation of the energy system. In a broad sense, the aim is formulated in terms of enabling a transition towards a "clean and fair” energy system. The policy aspirations for ECs seem to be many and diverse, including technical, economic, social and organizational, referring to a set of different values such as effective use of resources, social equity, and ecological sustainability. In technical and economic terms, EC's are supposed to enable clusters of actors to collectively invest in technology for renewable energy systems and share coordination benefits of more diverse energy use patterns, energy storage solutions and production units. Socially, ECs are expected to increase the acceptance of and support for the transition towards a renewable energy system by involving and empowering citizens, thereby helping to address issues such as poverty, social equity and “energy segregation”. Moreover, within the EU policy discourse, ECs are conceived as policy instruments for implementing EU’s energy goals, as actors on energy markets and as a part of civil society and local communities at the same time.Evidently, ECs are expected to produce a multitude of societal benefits, but the extent to which these policy aspirations are heard and translated into practice remains unclear. In this paper, we present a mapping of how the concept of ECs is understood and reported in the research literature, published from 2015 until 2021. The aim is to categorize and assess existing understandings of ECs, and to show which aspects have been considered when ECs have been discussed and practiced. More specifically, we pose the question of whether the policymakers’ social aspirations of ECs have been forgotten.
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