Solarpunk Futures is the latest Playing with the Sun activity designed to create the conditions for both creative learning and a brief form of “Scenius” to occur. It invites participants to build something that represents what they wish to see in a sustainable city of the future. The model city is powered by a working solar-powered microgrid designed to be modular and extensible, so educators and tinkerers can shape things however they wish. While playing with it they develop both a sense for how sustainable energy works and the characteristics of energy networks. Like all Playing with the Sun activities this one is open source. Detailed building instructions are available on the Playing with the Sun website, so other educators and researchers can make it themselves and adapt it to suit their needs.