Exactly - and for about a million other purposes also! This [0] seems like a good survey - some progress is being made raising the efficiency into the mid-teen

Exactly - and for about a million other purposes also! This [0] seems like a good survey - some progress is being made raising the efficiency into the mid-teens... [0] https://www.intechopen.com/books/green-energy-advances/thermoelectric-energy-harvesting-basic-principles-and-applications https://www.intechopen.com/books/green-energy-advances/therm...