Ah, I should have checked, I assumed it was mostly hydropower like BC and AB.
However, the problem still exists, you have countries in the middle east which politically will never be allowed civilian nuclear power (only 32 countries out of 170 odd actually have civilian nuclear power) but which could potentially produce huge amounts of Solar power during the day. If only they could then buy power from solar / wind / geothermal stations through the night, or continue producing through the night from energy stored in Molten Salt, Liquid metal batteries, Liquified Air etc.
However, the problem still exists, you have countries in the middle east which politically will never be allowed civilian nuclear power (only 32 countries out of 170 odd actually have civilian nuclear power) but which could potentially produce huge amounts of Solar power during the day. If only they could then buy power from solar / wind / geothermal stations through the night, or continue producing through the night from energy stored in Molten Salt, Liquid metal batteries, Liquified Air etc.