What can we learn about the technology invented by Nur Energy?

By 2018, a large solar power plant in the Tunisian part of the Sahara desert may start sending power to energy-hungry Western Europe. The company running the plant says once it is fully operational it will generate almost twice as much electricity as an average nuclear plant and supply two million homes in Europe.
    According to the European Commission’s Institute for Energy, just 0.3 percent of the Saharan Desert’s intense solar energy can provide Europe with all the electrical power it needs.
    A company called Nur Energy plans to capture some of it by building a solar plant similar to an Israeli one in the Negev desert that uses heliotropic mirrors.(3)This technology, unlike photovoltaic cells, can generate energy even when the sky is overcast or at night.