Not only that but this:
Silicon wafers account for more than half the cost of making a solar cell. "By using lower-quality silicon, you can drastically reduce that cost," he said.
Silicon wafers account for more than half the cost of making a solar cell. "By using lower-quality silicon, you can drastically reduce that cost," he said.
Although there is no shortage of rooftop space, you could still fit them into places where there currently isn't so much space. Perhaps, at some point, we could put them on top of electric cars, making them less dependent on charging sockets.