In order to meet the EU's climate and resource efficiency targets, changes in our daily-life behaviours, as well as business models, are urgently necessary. More insights are needed to make real changes based on research with a systems perspective. We developed a system dynamics model to analyse the environmental benefits of a transition from ownership-based to access-based household laundry activities. The model considers demographic, technological and behavioural aspects and thereby assesses the environmental impact of laundry activities. The model is applied to the Swedish as well as the European context and allows cross-country comparisons. The results indicate a significant potential of the sharing economy. The higher utilisation of shared machines and extended lifespans of the machines can cut greenhouse gas emissions by a third and lower raw material usage overall and lower primary raw material in production due to higher recycling rates. The carbon intensity of the energy mix is a crucial factor for the environmental consequences that arise through changes in energy usage due to sharing economy practices. This case study shows the value of adopting policies that could promote sharing and extended life spans.

为了达到欧盟的气候和资源效率目标，迫切需要改变我们的日常生活行为以及商业模式。需要更多的见识以基于系统角度的研究做出真正的改变。我们开发了一个系统动力学模型来分析从基于所有权的家庭洗衣活动过渡到基于所有权的家庭洗衣活动的环境效益。该模型考虑了人口，技术和行为方面，从而评估了洗衣活动对环境的影响。该模型适用于瑞典语和欧洲语境，并允许进行跨国比较。结果表明共享经济具有巨大潜力。共享机器的更高利用率和延长机器的使用寿命可以将温室气体排放减少三分之一，并且由于更高的回收率，可以减少总体原材料使用量，并降低生产中的主要原材料。能源组合的碳强度是由于共享经济做法而导致的能源使用变化所引起的环境后果的关键因素。该案例研究表明了采取可以促进共享和延长寿命的政策的价值。