Energy is energy and all energy ends up in the form of heat sooner or later.
Given a unit of energy and given the same material, such as the mass of the earth, you are going to end up with the same temperature.
Frankly before you can talk about the subject in a useful manner you need to have a far better understanding of physics then you seem to now be in the possession of.
Bill it is not just physics it is the earth's biology too, the earth can deal with certain kinds of energy waste better than others...
For instance co2 is one form of energy waste as nuclear radiation is another form of energy waste... Carbon monoxide is another from of energy waste as is formaldehyde the waste from another form of energy.
Burning wood produces a particular kind of waste, carbon and smoke from wood as burning coal has its own waste chemical composition. Heat is not the only consideration here. I don't have to be a rocket scientist to understand that. And if heat is the only waste from utilizing the sun's energy then I would say that is an optimum energy form. Heat sinks have been deployed for many years to absorb heat so it does not readily dissipate back into the atmosphere. Instead of saying I can't possible understand, why not try and explain what it is you are saying rather than under estimate me? I may not understand all of the laws of thermodynamics and entropy but I do understand when an energy form gives off a certain kind of waste AND heat... And heat can be used to, err, heat things it does not always have to be a negative.
What I was saying was that utilizing the sun is cleaner than utilizing coal and oil... I may not be Mr Wizard but I am also not Mr Ed.
My mother used to have a small greenhouse attached to the side of our house and we could sit in the middle of winter here in Maine with snow on the ground and freezing temperatures and be nice and comfy in the greenhouse. We grew plants all winter and there was no negative energy waste to contend with. She kept giant black plastic drums of water to absorb the heat during the day so at night they kept the green house moderately warm.
And the plants (biology) in the greenhouse converted the sun's heat into their own energy. A perfect little balance between biology and the sun. Or we could have bought a bunch of grow lights and utilized oil or coal to grow things in the winter but the results would have been pollution rather than a relatively green approach..