I came to this article about the Sunflower’s Fresnel lens . Those lens concentrates sunlight more than 1,000 times, enabling cheaper electricity than traditional photovoltaics. The system is self-powered.
Technical specifications:

200-watt system
features trackers that shift with the sun’s location, as well as a controller and communications system.
The low-slung Sunflower is built to withstand winds, and it [...]