Here is what I believe your claim means, yes, there is a local cooling affect from large scale farms, most of the heat that would have heated the surface of the planet is released eventually but does not heat the surface of the planet like photons striking the planet, and if we replaced all fossil fuels with solar there would be no incremental change in waste heat but there would be in the amount of solar energy striking the surface of the planet.Here is what I think your claim means.
Please correct me if I'm misstating it.
100 watts of sunlight hits an area on Earth. This warms the Earth by X amount.
If we intercept that 100 watts of sunlight with a solar panel, some amount of electricity is generated and somehow this causes the Earth, as a system, to warm by some amount less than X. Is that right?
And the evidence to support your claim is that the temperature above a solar farm is lower than it was before the solar farm was built.
Does that sum it up?
Does that sum it up?