The goal of this contribution is to illustrate the linkages between industrial ecology (IE) and the social and solidarity economy (SSE), an economic paradigm that is robust in terms of conceptual and historical developments, and active around the world as a social movement. The SSE includes a range of activities, such as fair trade, community currencies and some forms of peer-to-peer sharing, to name but a few. The links and tensions between SSE and IE are considered fi rst conceptually, by uncovering the theoretical frameworks attached to each fi eld. Three 'solidarity' practices are then discussed in relation to industrial ecology activities, namely: aspects of the sharing economy, community currencies and forms of crowd-funding. A main fi nding is that the two fi elds of research and practice are compatible, as neither focus on economic growth and specifi cally profi t as an ultimate aim; yet IE prioritizes biophysical considerations, whereas the SSE places more emphasis on people and power systems, as expected. One insight gleaned through this process is that more attention could be placed on labour conditions, power relations and governance systems in industrial ecology, building on previous and ongoing work in this area.Four main fi elds of inquiry emerge: understanding whether 'solidaristic' cooperatives and enterprises could be more receptive to industrial ecology approaches and more adept at embracing resource exchanges such as in industrial symbiosis; ascertaining to what extent companies already involved in symbiotic relations might