Time use analysis is an accessible and intuitive method for building an understanding of the greenhouse gas emissions footprint of lifestyles, and the ways in which these lifestyles impact our enjoyment and wellbeing. This study develops a novel methodology to estimate the emissions footprint and wellbeing of lifestyles in 2050 in three global north countries (Finland, France, and the UK) from a time use perspective. This modelling utilises time use analysis, wellbeing data, direct emissions data, environmentally extended multiregional input-output analysis (MRIO), and scenario building. We first construct an ambitious 2050 scenario as assuming a move to sufficiency-based household consumption of commodities and energy, systemic changes to transport habits, technological change, and energy efficiency improvements. Despite modelling these ambitious changes out to 2050, we estimate that the emissions intensity of global north lifestyles will remain outside planetary boundaries. We then model the specific wellbeing and emissions effects of three time use scenarios, or ‘lifestyles’, for all three countries to determine which forms of time use contribute towards sustainable wellbeing. These scenarios are shaped by insights from functional time use theory (FTU), with further insights from the provisioning systems literature. We find that, though it is possible to improve our wellbeing and lower emissions through lifestyle change, further radical transformations are required to provisioning systems to bring emissions footprints withing planetary boundaries. Moreover, without this transformation, some socially positive changes to time use may have unintended negative environmental effects.
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