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Willis Tower harvests sun energy

Tuesday, March 22, 2011
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local

The Willis Tower could be turned into a giant vertical solar farm if an experiment there is successful.

As part of a pilot project started in November, a few windows on the 56th floor have been treated to harvest energy from the sun.

The company that treated the windows claims each produces the same amount of energy as a conventional solar panel. It lets daylight in but cuts heat.

If successful, more windows on the building will be treated.

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