Assuming all of this profitable income helps reduce flight ticket prices, it’s a great scheme for those airline travellers with solar pv on their roofs. In fact they may just make/save enough to afford to fly on another overseas holiday every year.

Meanwhile, for the poorer end of society, who can’t afford to invest in solar pv or fly on overseas holidays, there’ll be a few more deaths among the sick and elderly next winter. But Hey! that’s the way the cookie crumbles – ludicrously expensive solar pv technology needs support from everyone, to ‘save the planet’.