A UK company developing spray-on solar panels says its technology could be up to 10 times cheaper to produce than traditional photovoltaic cells.

There’s no doubt solar energy is a compelling alternative to fossil fuels, but implementing it has traditionally meant installing the standard, costly and ungainly solar panel. SRS Energy’s dual-purpose roof tiles offer one way to get around that requirement; now another comes in the form of thin, flexible solar sheets that can be integrated with architectural building materials.

Thanks to 54 tiny photovoltaic panels, the iBonsai (we just made that name up) will store energy in a hidden battery during the day, allowing you to recharge your gadgets even at night.