Summary: From a few panels on your rooftop to the giant solar farms spreading around the globe, cheaper solar tech has been boosting demand for this type of renewable energy throughout the world. In the US a new 30 percent tariff on imported panels, imposed by the Trump administration last month, is focussing attention back on a decidedly analogue way to do more with less. The good old mirror- or 'booster reflector' to give it its technical name!- could be poised for a bit of a renaissance, according to Joshua Pearce, who is a Professor of Engineering at the Michigan Technological University.
