Grassroots innovation for urban sustainability: comparing the diffusion pathways of three ecovillage projects

Grassroots innovation literature proposes that ‘intermediately’ situated community-based projects—those which are neither too radical, nor too embedded in the mainstream—play an important cross-contextual bridging role in processes of innovation for sustainable development. This paper explores this intermediacy claim by comparing how three established ecovillage projects engage outsiders and diffuse their lessons learned. Employing comparative case-study methodology, I find that while all three projects successfully replicate alternative practices outside their boundaries—for example through education, outreach, and on-site activities—one project has partnered with municipal planners to translate ‘ecovillage concepts’ into a new zoning category that will facilitate similar development by mainstream actors. The argument is made that the landscape for grassroots innovation is uneven, and that niche-to-regime translation occurs through projects that position themselves as part of two action domains at once. <br> <b>Keywords:</b> Grassroots innovation, sociotechnical transitions, sustainability, urban planning, ecovillages