This paper assesses the role of urban experiments for local planning processes through a case-based analysis of the city lab of Maastricht. In conjunction with this, the article offers three contributions, as additional elements. Firstly, the paper develops a set of defining characteristics of city labs as an analytical concept which is relevant for discussions about (collaborative) planning. Secondly, it refines the literature on collaborative planning by drawing attention to experimentation and innovation. Thirdly, the paper assesses the potential of city labs to contribute to the innovation of urban governance. The work draws from the literature on experimentation and learning as well as the literature on collaborative urban planning. In the conclusions, we discuss the potential of city labs as vehicles for learning about new urban planning approaches and their limitations as spaces for small-scale experimentation. The paper is based on research for the URB@Exp research project funded by JPI Urban Europe.

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The governance role of local renewable energy cooperatives (LRECs) in facilitating the energy transition remains under-scrutinized in the scholarly literature. Such a gap is puzzling, since LRECs are a manifestation of the current decentralization movement and yield a promising governance contribution to a ‘just energy transition.’ This paper presents a study of the governance roles of LRECs in the province of Limburg, the Netherlands. Building on existing work on the cooperative movement and energy governance, we, first, develop a conceptual framework for our analysis. The framework is built around three key interactions shaping these governance roles, between (1) LRECs and their (potential) members, (2) LRECs and the government and (3) LRECs with other LRECs. The results of an online survey and qualitative interviews with selected cooperatives led to the identification of five key governance roles that these cooperatives take up in the facilitation of the energy transition: (1) mobilizing the public, (2) brokering between government and citizens, (3) providing context specific knowledge and expertise, (4) initiating accepted change and (5) proffering the integration of sustainability. The paper concludes by reflecting on the relevance of our findings in this Dutch case for the broader ‘just transition’ movement.

The contribution of the first generation of urban living labs (ULLs) to system-wide sustainability transformations is thus far less than expected. A possible explanation for this can be found in the focus of most ULLs on local, highly contextualized knowledge, and a missing link to system-wide transformations through diffusion and upscaling beyond the geographic boundaries of the lab. Meta-learning, i.e., learning across multiple, distributed experiments, through networked ULLs seems to offer a way forward. However, the literature on city networks shows that meta-learning cannot be effectively facilitated in horizontal networks without a learning infrastructure. To address this shortcoming and inspire a second generation of ULLs, this Perspective paper outlines a meta-lab approach actively facilitating the contribution of local living labs to wider sustainability transformations. We see a meta-lab as a transurban multi-actor network to connect and, where possible, align the learning processes across thematically related ULLs in different urban contexts through a central learning agenda. The meta-lab approach respects and supports local learning agendas and their focus on local solutions for local problems, while acknowledging and utilizing the potential of local experiments to contribute to a central learning agenda. Our paper argues that a meta-lab approach can act as a catalyst of learning in two important ways: (1) by accelerating local experimentation and learning processes by feeding them with lessons from other locations; and (2) by facilitating a more focused – local and transurban – learning process through a shared learning agenda. The meta-lab approach thus stimulates urban sustainability transformations by supporting faster, more focused and wider learning about effective innovations. We conclude this paper by outlining how common pitfalls in transurban learning can be avoided by a careful design of the meta-lab, or by meeting certain conditions when implementing this design.

There is a large diversity in lab approaches. We contribute to a much needed evaluation by reflecting on a specific transdisciplinary action research approach that transforms a conventional innovation project into a transition experiment. We show how the approach could be adapted in order to be applied to urban labs focusing on sustainability transitions in governance systems.Urban labs have gained popularity throughout Europe. They are a manifestation of the search for new forms of urban governance capable of addressing the complex problems that cities are facing nowadays. These labs typically aim to create space for transdisciplinary research, co-creation and experimenting with potential solutions to sustainability challenges. In urban labs in four European cities, we applied a specific transdisciplinary action research approach labelled as “transitioning of (urban lab) experiments”. Our approach consists of four steps: co-design of experiments, setting explicit learning goals, evaluating what has been learned, and dissemination and embedding of lessons learned. Critically reflecting on the difficulties encountered in the implementation of the transitioning approach, we conclude that it must be adapted when applied to urban labs focusing on sustainability transitions in institutional and governance systems rather than in socio-technical systems. We provide recommendations as to how the approach could be adapted.