itwbennett writes "At the Ceatec electronics conference in Japan this week, 3M is showing film that turns windows into solar panels. Although the product only generates about 20% of the electricity of a traditional solar panel, it will cost about half as much, is much easier to install, and takes up no additional space. 'An average person could go to the store, buy some of this, and then bring it home and install it themselves,' said Yasuhiro Aoyagi, a senior manager in the company's construction markets division."
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