Parabolic Trough Thermal Energy Storage Technology One advantage of parabolic trough power plants is their potential for storing solar thermal energy to use during non-solar periods and to dispatch when it's needed most. As a result, thermal energy storage (TES) allows parabolic trough power plants to achieve higher annual capacity factors—from 25% without thermal storage up to 70% or more with it.
A borehole thermal energy storage (BTES) system is an underground structure for storing large quantities of solar heat collected in summer for use later in winter. It is basically a large, underground heat exchanger. A BTES consists of an array of boreholes resembling standard drilled wells. After drilling, a plastic pipe with a “U” bend at the bottom is inserted down the borehole. To provide good thermal contact with the surrounding soil, the borehole is then filled with a high thermal…
Eutectic salts - materials used to store and release heat by means of their latent heat capacity, that is, they alternately melt and solidify in the normal solar operating temperature range of 80 to 160 degrees Fahrenheit.
Solar Thermal Energy Storage - by storing summer heat provides winter warmth. "The tank is heated all summer with the solar collector and heat is retrieved in the winter. A ventilator brings in fresh air, warms it and recirculates it. The owner has been through one winter with most heat provided by the storage system. They did us about $600 of electrical backup.