Dear all, I am sharing two open calls about a workshop and a conference that will be taking place in Tzoumerka, Epirus <https://www.travelstyle.gr/wp-content/uploads/2018/11/tzoumerka-800x600.jpg> in May 2020. The mountainous Epirus is a previously unspoiled region in Greece that is gearing up for engaging in fossil fuel extraction. Epirus is home to several Natura areas. However, it is also part of a baffling nation-wide search for oil deposits across multiple aquatic and forest ecosystems. The shady proceedings endorsed by all governments of the past years have understandably outraged local communities across the country, which see not only their livelihoods threatened but the well-being of future generations. So, the aim of the workshop is to confront oil drilling activities in Epirus by manufacturing small-scale renewables based on digital commons with local communities. The workshop is titled "Transforming Energy Systems in the Commons Era" and for the open call see here <http://www.p2plab.gr/en/archives/1873>. The second open call concerns the annual *ephemera* conference that will also be taking place in Tzoumerka. *ephemera* is an independent open access journal which has been active for almost two decades with extensive dedicated readership. This year's conference is an attempt to connect with communities, initiatives and activists working on social change and focus on empirical research working towards postcapitalist imaginaries. For more details see here <http://www.ephemerajournal.org/events/materialities-and-socialities-postcapitalism-commons-peer-peer-sharing-and-solidarity>. Please consider joining us and share the calls accordingly! All the best, Vasilis -- Vasilis Kostakis Professor of P2P Governance, TalTech Faculty Associate, Harvard University Founder, P2P Lab