Called #PowerTheChange, the campaign challenged citizens in San Francisco, Sacramento, Portland and Los Angeles to convert their footsteps into off-grid power to meet a steps target. Once the goal was reached, this triggered a clean-energy donation to local sustainability non-profits. Real-time data screens provided feedback to users with the current steps figure and the number of joules being generated. In the final three cities, footsteps were also harvested to power stunning LED archways overhead, designed by Pavagen and, illuminating the way for participants.