Instead of offering the actual drones, they are instead offering panel-cleaning packages to Belgium-based backers, to be redeemed when and if the system is available. Pledges start at €120 (about ...

Solar energy is no longer the new kid on the block. In fact, in many places around the world, solar-created electricity is now cheaper than its coal-generated counterpart. Yet, despite the rising ...

Solar power systems with double-sided (bifacial) solar panels--which collect sunlight from two sides instead of one--and single-axis tracking technology that tilts the panels so they can follow the ...