During the autumn, winter and early spring of 2022/2023, Europe faced rapidly increasing energy prices and threats of power cuts. The situation was consequently labelled an “energy crisis”, and one sector that was severely affected was households. In response to the situation, European households made efforts to reduce and time-shift their energy use to mitigate the effects of the crisis. Considering that domestic energy practices are often difficult to change, particularly in the long term, we find this effect of the energy crisis on households important to understand more deeply. In this paper, we use social practice theory to investigate how Swedish households responded to the crisis and what changes they made in terms of re-configurations of their practices. The aim was to contribute knowledge on how households adapt to a changing energy system with volatile prices, limitations in electric power, and threats of energy crisis. We conducted two rounds of semi-structured interviews with 9 households in single-family houses in the middle and south of Sweden during and after the crisis, in total 18 interviews, to examine what re-configurations of practices emerged and which persisted over time. The results show that significant changes were apparent in primarily the practice domains of heating and hygiene. While some of these changes were temporary, other re-configurations of energy practices persisted beyond the months of crisis and high prices, indicating that meanings of frugality and sufficiency were strengthened. Our results demonstrate that households were reminded of certain electricity use that is otherwise typically backgrounded in homes and that the energy crisis stimulated re-configuration and re-examination of norms as well as reflection on electricity use in general. Finally, we discuss the effects of the energy crisis on household practices in comparison with other crises and disruptions, and point to the importance of communicating clearly with households about the societal effects of their efforts, in order to manage the legacy of this crisis for similar future crisis situations. 

Flexible resources aids in enhancing the resilience of a renewable dominated power system. Space heating systems equipped with heat pumps is one such flexible resource. With this background, the current study deals with the quantification of flexibility potential of space heating systems in houses equipped with various heat pump types. A heat pump model is represented using a vapour compression heat pump cycle. This model is integrated with a thermal model of a house to estimate electricity consumption, for maintaining the indoor temperature at a set value, as flexibility quantification depends on electricity consumption. In addition to this, flexibility potential is quantified by, analysing and incorporating the results on minimum acceptable indoor temperature from twelve interviews with households owning heat pumps, into the integrated model. The results from interviews reveal that, there is an uncertainty in minimum acceptable indoor temperature, as it is dependant on a number of factors such as frequency and duration of interruption, access to additional heating and motivation to be flexible. Hence, to quantify flexibility using thermal simulations, the indoor temperature is reduced from 20 °C to values between 18 °C and 15 °C, based on minimum acceptable temperatures stated in the interviews. The flexibility potential is quantified in terms of an instantaneous reduction in electric power and reduction in electric energy. By reducing the indoor temperature from 20 °C to the aforementioned values at an outdoor ambient temperature of -5 °C, in about a million single family houses in southern half of Sweden, an instantaneous reduction in electric power is estimated to be 1.6 GW, for the power system with 23 GW plannable power. Additionally, considering the recovery of the indoor temperature to 20 °C in 24 h, electric energy reduction is found to be between 4.06 GWh and 7.4 GWh, when the reference indoor temperature is reduced to values between 18 °C and 15 °C respectively, over 17.25 h. Furthermore, with time the amount of flexibility offered reduces, becomes negative during the recovery period and finally reaches zero, when the indoor temperature is restored. The results reveal that space heating systems in houses equipped with heat pumps have the potential to enhance the resilience of the power grid during severe grid disturbances. 

Climate change is increasing the risk for extreme weather events such as heatwaves, including in northern countries like Sweden, which until recent years has had limited experiences of coping with extreme heat. Based on predictions that Sweden will be more frequently exposed to heatwaves in the future, it is imperative to increase the societal resilience and adaptation measures. This paper presents a qualitative interview study involving 19 participants and their experiences of caring for vulnerable people during the heatwave in 2018. The participants represent four different organizations (working directly or indirectly with vulnerable people) in two municipalities in Sweden, including preschools, homes for the elderly, homecare services, and care homes for people with functional impairments, which were all impacted during the heatwave. This study contributes new empirical insights about the heatwave in 2018 and, in particular, similarities and differences in both experiences and adaptation measures across the four organizations. The findings show how both staff and vulnerable people suffered from the consequences of heat which increased vulnerability, how some organizations lacked enough (qualified) staff to secure routines, and that few evaluations and formal changes were done after the heatwave.

Residential solar panels are increasingly popular, yet women arelargely invisible as customers and users. This creates barriers forreaching gender equality and climate goals where increased renewable energy is key. We present results from a norm-criticalstudy drawing on 10 interviews with solar industry representativesand focus groups with 28 women, either owning solar panels or inthe process of buying. The study aims to critically analyze currentgender norms related to technology, market, and use, as well asto identify difficulties for women’s solar panel engagement. Thestudy shows how women at different touchpoints in the processof buying and having solar panels both navigate and negotiate anongoing gendering of this technology, despite the industry attemptsto present solar panels as gender neutral. While the study focuseson residential solar panels, the contribution is relevant for widerHCI, e.g. work related to smart home technologies.

A transition to renewable energy increases the risks of disruptions when electricity supply does not meet demand. HCI has explored how digital technologies can mitigate such problems in households through support for reducing or shifting electricity use. However, faster transitions may be possible if some disturbances can be acceptable and households are supported in adapting to them. In this paper, we present a study of 21 Swedish households and their experiences of and ideas on how to manage disruptions in electricity supply. We call this perspective household energy resilience and identify three strategies for resilience: (1) response diversity, i.e., diversity in ways of carrying out normally electricity-dependent practices, (2) creating opportunities to develop resilience, and (3) building community energy resilience. Furthermore, we suggest how HCI can support these strategies, both by providing tools to increase resilience and by carefully designing technology and services to be more resilient in themselves. 

Energy resilience is an important focus for energy policy and research, since the energy system is increasingly facing challenges such as power shortages, e.g. due to increased renewable energy production, and risks of power outages caused by extreme weathers. Typically, energy resilience in these contexts focuses on infrastructure and securing supply of electricity despite disturbances. This paper contributes a complementary perspective on resilience, which takes households as a starting point for investigating resilience. Building on understandings of resilience from several disciplines, we suggest a definition of household energy resilience that can be used to explore how households can ensure a good life in a future with variable availability of electricity. Furthermore, we draw on current ideas of future domestic energy use in energy affluent contexts (backup energy sources, energy efficiency, flexibility, and energy sufficiency) to create a framework for exploring household energy resilience. We find a potential for diversity within and between the different ideas, that is not always present in mainstream visions of future energy use. With the perspective of household energy resilience, we wish to challenge the perception of electricity demand as non-negotiable and to reveal opportunities for supporting households in becoming more resilient in an uncertain future. © 2022 The Authors

Fireplaces are popular in Northern Europe. However, particle emissions from fireplaces have been identified as an environmental problem and a health problem. User behaviors affect particle emissions and the success of particle reducing technologies to a large extent. This interdisciplinary study aims to investigate why and how people use their fireplaces, including what emotions people associate with fire, and their interest in learning more about fire making and changing behavior related to fire making. It does so by applying an emotion regulation model in a novel way. In total, 146 Swedish individuals owning a fireplace (the majority had wood stoves, a few had tiled stoves, boilers or other types of fireplaces) participated in an online questionnaire about motives, behaviors, knowledge, and interest in learning and changing behavior. The most common motives for using a fireplace in this sample were complementary heating and “cozy fire making”. Our results suggest that watching a fire can aid in regulating emotions from unpleasant stress towards joy and provide a pleasant atmosphere for socialization, and that wood fuel may be a preferred complementary energy choice because it provides beautiful light, comfortable warmth, beautiful design and safety. People reporting emotional motives for using a fireplace also reported an interest in changing behavior.

Global warming is increasingly causing extreme weather events, such as heat waves. One-way heat waves are problematic in society, particularly in urban areas, is because of their negative impact on vulnerable groups including elderly people and children. Organizations such as municipalities that are responsible for local schools, day care centres and/or elderly homes, may struggle to provide the necessary care and function during extreme heat waves. This work explores how remote sensing images providing historical data of land surface temperatures (LST) can be used to create summer urban heat island maps and heat wave intensity, and in the longer run, how such information could be used by municipalities and other actors to mitigate effects of future heat waves. The method presented in this study was used to detect the “hot spots” in two participating Swedish municipalities and identify the municipal services located within these spots based on MODIS (1 km) and Landsat (30 m) LST datasets. Furthermore, this study showed that urban heat island phenomenon existed in the two participating municipalities. In general, this methodology can be applicable at both local and regional scale, although it might require additional site-specific data. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.