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A thermoelectric generator (TEG), also called a Seebeck generator, is a solid state device that converts heat (driven by temperature differences) directly into electrical energy through a phenomenon called the Seebeck effect (a form of thermoelectric effect).
The 2015 extension is expected to add $35 billion of investment for 20 Gigawatts of wind power. Similar figures are expected for solar power , and combined the PTCs have a value of $25 billion. [40] $20 billion was spent on the PTC between 2005 and 2019.