The massive expansion of solar panels on rooftops and solar farms across the world has captured the headlines, but the other established way of generating electricity from sunlight – concentrated solar power (CSP), or solar tower power – is also making great strides. For a long time, using mirrors to concentrate the sun’s rays to heat molten salt and produce superheated steam to drive a generator’s turbines was thought to be a more promising technology than photovoltaic panels (PV), because it was originally cheaper. But as the price of the panels has dropped dramatically in the last five years, CSP fell out of favour, although some countries continued to support its development. Now the cost of CSP is also falling. But it has another major advantage: unlike the panels, it can go on producing power long after the sun has set, and can store it for up to 15 hours, for use when it’s needed.
Climate News Network 11th June 2017 read more »