This nomadic, interactive energy commons uses low-tech systems to harness, store and dispense energy for recharging a variety of mobile devices. Anyone can contribute to the energy commons by spending a few minutes pumping the machine, creating a small charge for yourself or a future person in need. Power Call relies on good will to generate energy while simultaneously diffusing the anonymity of people in public spaces. Users share their messages on a rotating rolodex-style message board. Documentary film-maker Matt Dibble produced a short video.