Ummm well this Engineer says it does. And the data proving it is all out there for you to see. Advise you refrain from shooting off without seeing the evidence. We don't get energy patents from not knowing anything about it. Got any patents in energy you can dangle? Done six years research on it from Chartered Engineer and PhD research, after twenty plus years of systems Engineering yourself?
The whole point is it is not a closed system. Energy flows through it. We take energy from the output when we should be taking it from the input.
E=MC squared tells you when we convert things including nuclear materials to energy you have to have a major part of the material return to the heat it was before it was made into a material.
The opposite happens when you create materials from sunlight, which has to become heat if neither we nor nature did anything with it.
So use of sunlight for anything at all has negative temperature impact.
Notice this is the difference between destruction and creation.
Which one do you think is sustainable?