That didn't seem to be the point at all. The point was, practically all energy produced turns to heat on Earth. Assuming growing energy production/consumption o

That didn't seem to be the point at all. The point was, practically all energy produced turns to heat on Earth. Assuming growing energy production/consumption on the planet, the sheer wattage of waste heat will eventually be greater than the planet can radiate into space, whatever the method used to produce that energy.