> Given these paragraphs and the name "thermophotovoltalics", that this is about solar power seems like a reasonable conclusion to draw. Also, googling around I

> Given these paragraphs and the name "thermophotovoltalics", that this is about solar power seems like a reasonable conclusion to draw. Also, googling around I am seeing figures for steam turbine efficiency of between 40 and 80%. How sure are you this is not about solar cells? That it's not about the solar cells people in the comments mean? Very, the paper and citations talk about furnaces, and the temperature this operates at is 1200C. This isn't something you'd stick on your roof.