Simplest thing to my mind is to carpet equatorial deserts with solar panels, pipe the electricity to cooler northern latitudes (like ours in the UK) where it can be used either to meet consumption or to electrolyse water to produce hydrogen which can be stored until it's needed as fuel - e.g. in fuel cell cars, heating, electricity generation, blah-blah !
As all countries' electricity grids are linked you'd need one bloody big cable to hook up your solar carpet to the nearest grid, then daisychain the electricity to where the demand is !
Simples !!
And far more reliable with the resulting hydrogen fuel which we can use at night until the sun comes up over solar array the next morning.
Far more reliable than us in higher latitides pratting around with scraps of solar or wind which are as unreliable as politicians' election promises.
(Yes it's expensive to set up but there are more than a few corporations that would stump up the infrastructure in returm for the truly massive profits therever after.)
