Rendering: Metcalf Energy Center, © Hillier Group (2003)
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There is a company out here on the left coast called Wellons that has been building and installing "co-generation" systems for the timber/lumber industry for forty years. James Fallows covers another type of "new" system in China, while Lisa Margonelli covers the current situation in our beloved flag-pinned USA.

Both are worth the read. Enjoy your Saturday.
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James Fallows/theAtlantic: China's Silver Lining (June '08)
The heart of his idea—easy to describe, tricky to implement—is capturing the enormous amount of heat normally wasted in cement making and using it to run turbines that generate electric power.

Lisa Margonelli/theAtlantic: Waste Not (April '08)
By making use of its “junk energy,” an industrial plant can generate its own power and buy less from the grid. A case in point is the ArcelorMittal steel mill in East Chicago, Indiana, where a company called Primary Energy/EPCOR USA has been building on-site energy plants to capture heat and gases since 1996.