The adoption of photovoltaic (PV) panels, electric vehicles (EVs), and dynamic electricity pricing is transforming households into active "prosumers" who generate, consume, and sell electricity. This shift, driven by rising costs and environmental concerns, requires new technologies to help households manage their production and consumption. Electricity’s invisibility adds complexity, necessitating interfaces that make energy use and generation comprehensible. This paper presents the Always-On In-Home Display (AOIHD), a technology probe designed for prosumer households to navigate the dynamics of this production and consumption - balancing periods of solar abundance and grid reliance, by making energy data persistently and collectively accessible within the household. Adopting a practice theory lens, we explore how the AOIHD was experienced in daily life over a four-year autobiographical study and through deployments in other Swedish households. Our findings highlight four experiential qualities—Learning, Triggering, Including, and Troubling—that illustrate how the display supports the domestication of energy feedback technologies in prosumer contexts. We argue that fostering integration into household practices is key to sustaining meaningful interaction with smart energy technologies.

Environmental data serves as one of the principal mechanisms for making sense of and organizing sustainable futures in the face of rampant climate change. In the context of everyday life, such data involves notions such as carbon footprints and energy usage metrics. These metrics operate across various scales - from the macro level of United Nations and the Sustainable Development Goals to the micro level of eco-feedback systems for individuals. The underlying assumption is that presenting more data will prompt action. However, this approach has proven inadequate for achieving the scale of change required to address climate crisis and overconsumption. The limitation stems partly from how we relate to and make meaning with environmental data. The presumed objective nature of data invites particular relations to, and sensemaking processes with the data that often fail to connect abstract metrics with lived experience.

Sustainable Human-Computer Interaction (SHCI), a subfield of HCI, initially approached everyday sustainability through technological solutions and persuasive technologies following these assumptions. Scholars have increasingly criticized these limited framings - recognizing that environmental data can create objective but meaningless representations of environmental phenomena and advocate for more relational approaches that embrace individual subjectivity and agency. Given data’s pervasiveness in sustainability discourse, this thesis argues for re-examining our predominantly cerebral relations with abstract environmental metrics. Instead, an alternative possible path could be fostering new relational, embodied connections and sense-making processes that build shared understandings about everyday consumption and encourage participation in change-making.

Building on the four central pillars of environmental data, everyday life, design, and sense-making, I conceptualise Data Anchoring - a design concept for reimagining and recontextualising environmental data in the everyday. Through design exemplars, I articulate how Data Anchoring operates through specific mechanisms - embodiment, social, affect, quotidian, and frame-based strategies that enable new forms of knowing and relating to data. I position its contribution within the broader landscape of SHCI, as a means to transform abstract environmental metrics into meaningful, experiential encounters.

Miljödata utgör en central mekanism för att förstå och forma hållbara framtider i en tid av snabbt accelererande klimatförändringar. I vardagliga sammanhang omfattar detta begrepp, såsom koldioxidavtryck och energiförbrukning. Sådana mätvärden används på flera skalnivåer – från globala initiativ såsom FN:s mål för hållbar utveckling till individuella eko-feedbacksystem som riktar sig till enskilda användare. Ett återkommande antagande, är att ökad tillgång till data leder till ökad handlingsbenägenhet. Denna strategi har emellertid visat sig otillräcklig för att möjliggöra den omfattande samhällsomställning som krävs för att hantera klimatkrisen och överkonsumtionen. Begränsningen hänger delvis samman med hur människor förhåller sig till och skapar mening kring miljödata. Datans påstått objektiva natur tenderar att ge upphov till meningsskapande processer som ofta misslyckas med att förankra abstrakta mätvärden i människors levda erfarenheter.

Fältet hållbar människa-datorinteraktion (SHCI), en underdisciplin inom människa-datorinteraktion (HCI), har inledningsvis närmat sig vardaglig hållbarhet genom teknologiska lösningar och övertygande teknologier, grundade i dessa antaganden. Dennainriktning har emellertid i allt högre grad kritiserats för sina begränsningar. Forskare har påpekat att miljödata ofta genererar objektiva men meningslösa representationer av miljöfenomen, och istället förespråkat mer relationella ansatser som betonar subjektivitet och handlingskraft. Mot bakgrund av datans genomgripande roll i hållbarhets diskursen argumenterar denna avhandling för ett omprövande av de huvudsakligen kognitiva relationer som präglar vårt förhållande till abstrakta miljö-mätvärden. En möjlig alternativ inriktning är att utveckla relationella och förkroppsligade former av meningsskapande som stödjer gemensamma förståelser kring vardaglig konsumtion och därigenom uppmuntrar aktivt deltagande i förändringsprocesser.

Med utgångspunkt i de fyra centrala pelarna – miljödata, vardagsliv, design och meningsskapande – introducerar jag begreppet Dataförankring (Data Anchoring). Detta designkoncept syftar till att ompröva och om-kontextualisera miljödata i vardagliga sammanhang. Genom designexempel visar jag hur Dataförankring verkar genom olika mekanismer – förkroppsligade, sociala, affektiva, vardagliga och ram-baserade strategier – som möjliggör nya former av kunskap och relation till data. Jag positionerar detta bidrag inom det bredare SHCI-fältet som ett sätt att omvandla abstrakta miljödata till meningsfulla och upplevelsebaserade möten.

The multiple unfolding crises that threaten life on Earth keep many of us awake at night and leave us at a loss about how to meaningfully respond. Much of humanity's efforts to address the crises are ultimately aimed at upholding the current unsustainable paradigm of infinite growth and exploitation of both natural resources and humans. In this paper, we offer the Two Loops model of change as a framework for understanding the interrelated crises of our times - the meta-crisis - to help us find clues for personal agency and also hope. Notably, Two Loops asks us to face the need for hospicing and grieving what is dying, reorienting computing to work to what comes after and what must be protected and saved. We work through the model's various spaces for agency, i.e. innovating, naming, connecting, nurturing, illuminating in the emergent System; and stewarding, hospicing, composting and transitioning in the dying dominant System. We suggest examples and clues as to where computing and HCI professionals' agency might lie in and between the two Systems in terms of skills, tools, practices and projects. Moving forward, we welcome a deeper, large-scale collaborative mapping of the possible contributions of our profession, to include all the different specialisms of our field in the picture of how we can be of service to liveable futures.

This paper presents a novel method for communicating environmental information in an engaging and memorable manner. Instead of traditional visual or written communication, our approach involves physical representation of data, using weight as the key element. Using food as a case study, we demonstrate the carbon footprint of food items through life-sized models that accurately reflect their actual weight. In an educational setting, students collectively discuss and estimate emissions for sample foods, followed by hands-on interaction. Each model's weight mirrors its carbon footprint, from 50 grams for half a kilo of potatoes to 13 kilograms for half a kilo of beef. Early tests show a significant "Wow!"factor, particularly for high-emission foods. This tangible experience leaves a lasting impression, potentially influencing future choices. Our approach can extend to other areas like energy. The paper concludes with design recommendations for future work.

Effectively communicating vital sustainability topics, such as personal CO2e emissions stemming from daily activities, is challenging since there is a general lack of”carbon literacy.” Despite efforts, like employing data visualizations, conveying this information in engaging and memorable ways remains difficult, often resulting in rapid forgetfulness. Our demonstration presents a pedagogical approach aimed at addressing this challenge. Through the integration of surprise elements, data physicalization, and embodied learning, we have developed two interactive mediated non-digital learning experiences focusing on CO2e emissions from food and from consumption. At the core of our pedagogical approach are physical artifacts representing CO2e emissions where the weight of the artifacts directly corresponds to the CO2e emissions they represent. By employing a structured interactive pedagogical setup involving peer discussion, hands-on manipulation of the artifacts, and subsequent explanations, we have created an engaging experience that encourages long-term learning.

This paper explores the potential of (re)framing the smart fridge to facilitate asynchronous food-sharing practices within activist communities. Empirical data were gathered through a co-design study with FoodSharing Stockholm community members between March 2022 and December 2023. This investigation delved into the opportunities and challenges of incorporating a smart fridge into their activist efforts towards local food waste reduction. Our findings highlight managing fairness, cleaning and maintenance, and community building as crucial considerations in designing for such activist, community settings. We introduce design concepts for four adaptable and configurable smart devices to modify existing community fridges and address the above considerations. This paper contributes to HCI by illustrating the intricate relations between ‘making an impact’, ‘building community’, and the design of ‘engagement through technology’ within food-sharing communities. It underscores the significance of designing smart fridges for activist food-sharing communities with a purpose that goes beyond mere functionality, emphasising the need to consider the broader social implications of digital interventions in facilitating local food waste reduction and community building.

Solar panels add a time component to the energy provision of households. Households equipped with solar systems will experience days and hours of abundance, during which they generate a surplus of electricity, as well as times when they need to purchase power from the grid. This creates opportunities for households to utilize more 'free' energy when it is available by shifting activities in time, but while this may be possible for some activities, other practices may be seen as non-negotiable. We report on the deployment of an in-home display installed in nine households with solar panels in the south of Sweden. We conducted two sets of interviews: one before installing the display and another four months post-installation. Our results confirm that the negotiability of a certain energy practice may vary between different households. Washing, dishwashing and charging EV were seen as negotiable by everyone, whereas cooking and hot water use were seen as non-negotiable by most, but not all, the households. The in-home display worked as expected as a trigger and provided feedback for helping shifting the negotiable practices, but not for non-negotiable and it was appreciated by the users for its simplicity.

The climate impact of our food consumption is a key issue to sustainability. Yet understanding the food system and the impact it has can be difficult given its abstract nature. In this paper, we report on a Research through Design project aimed at designing and evaluating a data physicalization for supporting collective sense-making of the climate impact of food. Throughout the design process, we have explored the materiality of CO2 emissions and ways to design with less resource use. The resulting data physicalization, Carbon Scales, was evaluated in a three-week field study with 27 participants. Our findings show that collective sense-making can be enabled through interactive data physicalizations and that this can lead to carbon literacy. We expand on a) sustainability through design by arguing for the value of artifacts that let people stay in the interaction as this can support collective sense-making and b) sustainability in design by showcasing the value of designing with an interaction-first and materials-second mindset.

Power shortages and fluctuations in electricity supply are expected to become more frequent in the future, as renewable energy increases in the electricity mix. This poses a problem in that electricity might not always be available at the time of demand for industries as well as for households. Demand flexibility in households has been brought forward as part of a solution to this problem. How to engage households in this, however, is still unclear. Actors have tried to liken demand flexibility with waste sorting and other altruistic activities with connotations of contributing to the benefit of society, rather than being an activity springing from economic motives. In this article, we use design fiction to critically explore what this analogy would mean in the context of household electricity consumption. We describe fictive user scenarios for cooking, charging the electric car, laundry & dishes and heating to draw the demand flexibility analogies to the forefront. By exemplifying and concretizing these scenarios, it becomes evident that using waste sorting as an analogy for demand flexibility is not realistic. We discuss the implications of the scenarios in relation to the current visions that inform the development of the smart grid, and the emerging services and service providers. We conclude that there is a need to challenge the current images of flexible households in the smart grid in order to design systems that support thriving within limits.

Animistic and anthropomorphic principles have long been investigated along with affective computing in both HCI and HRI research, to reduce user frustration and create more emotive yet relatable devices, robots, products and artefacts. Yet such artefacts and research have mainly been from user-centric perspectives and the animistic characteristics localised to single objects. In this exploratory paper, we take these principles in a new direction by attempting to invoke animistic characteristics of a room or a space itself. Designing primarily for space itself rather than the user or a single product, allows us to create new interactions and narratives that can induce animism and empathy for the space, in users. This leads to the creation of a prototype space, which we use to investigate how users approach, interact and behave in such a space, yielding several insights and user behaviour, all of which can be used for further studies, capable of generating new interaction perspectives and providing insights into user behaviour. We conclude by discussing the potentiality of such spaces in developing new strategies for behaviour change and HCI.