Calgary Folk Festival Musicians Literally Light Up Festival Stage
Robertson says the idea for this power project came to her when she was walking through a parkade and felt the vibrations underneath her feet.
She has stowed about 70 piezoelectric sensors, each the size of a hockey puck, under Stage Four.
Robertson says each one contains a natural element, like a quartz crystal, which when compressed or put under tension — will generate an electrical charge on their own.
"One day, I'm sure Nenshi will phone me up and hand me a bridge. That's the plan. I'd like to put these on bridges and make the infrastructure self-sufficient, electrically. Or maybe stuff these in lamp posts so maybe when there's a blackout or a flood, then the whole city doesn't go dark."
Roberston says the sensors last about 50 years and were donated to the the festival.