Using traditional photovoltaics and a very non-traditional inflatable concentrator and tensegrity truss rigging structure, the folks at Cool Earth Solar have developed a system that could be far cheaper than polished aluminum mirrors. In fact, the inflatable versions are up to 400 times cheaper than regular mirrors and they are so lightweight that they can be suspended on cable lines as opposed to individual base systems —thereby using far less steel in construction. That means faster installation and minimal land use disruption.
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