Powering them is one of the greater engineering challenges that we had to deal with, because powering a cell phone under a tree canopy, any sort of solar power under a tree canopy, was an as-yet-unsolved problem, and that's this unique solar panel design that you see here, which in fact is built also from recycled byproducts of an industrial process.
Alimentarea a fost una  din marile provocări pe care le-am avut pentru că alimentarea  unui celular sub coronament, orice fel de alimentare solară sub coronament e o problemă. Vedeţi proiectul panoului solar construit tot din resturi, ale unui proces industrial.