The best would be too use water-cooled PV panels with a heat pump to cool down the coolant and transform the heat. Cool panels produce quite a bit more electric

The best would be too use water-cooled PV panels with a heat pump to cool down the coolant and transform the heat. Cool panels produce quite a bit more electricity while the heat can be used elsewhere. Water-cooled panels are available commercially (with promises of far too high efficiencies, salesdroids gonna salesdroid) so this is not a pipe dream, especially not there where a water/water heat pump is available anyway - just install some valves to re-route the coolant through the panels.