In addition to Plataforma Solar de Almerfa, the Spanish research centre CTAER plans to test a new concept for tower power stations. With this system, the mirrors are not mounted on stationary masts, where they track the sun biaxially, but move on concentric rails around the receiver. The tower itself also rotates around its axis. Simulations have shown that this concept could increase the yield of tower power stations by up to 17 %. The background: in contrast to tracking PV modules, the heliostats are not aligned perpendicularly to the sun, but have to reflect the sunlight onto the receiver in the tower.
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