As the price of panels comes down, at some point it will be economically feasible to put panels on East and West facing rooves as well as ones facing North (New Zealand). This technology will enable all these panels to contribute the whole amount of power they are generating without the low output panels interfering with the others. It will also no longer matter if an individual panel is sometimes shaded. The technology also opens up the possibility of an electric car with all surfaces clad in solar panels which face every which way. If the car is left in the sun, the batteries are always getting charged as the sun moves across the sky. A truly critical advance.
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