Solar concentrators put one of these lenses on top of every solar cell.
Fresnel lens solar panel.
Concentrators work best when there is a single source of light and the concentrator can be pointed right at it.
The power of the sun can be deceiving and anyone using a fresnel lens for solar collection should get in the habit of treating the fresnel lens like a stove furnace or blowtorch.
Ultimately the cost of solar cell is several times lower than normal capacity which provides maximum benefits to the user.
This makes much more focused light come to each solar cell making the cells vastly more efficient.
When finished with a project store the lens covered preferably in a dark room or closet away from windows that experience direct sunlight.
However with recent innovations in technology the fresnel lens concentrating panel is ready to go big time.
The largest fresnel concentrating solar power plant opened in 2012.