Quote:
Originally Posted by MPaulHolmes
I was told by someone who went to a university talk about the grid that there's a theoretical limit to the percent of grid power that can be from solar grid ties. If it was over some percent, the grid would become unstable, and in practice, it was actually less than the theoretical percent.
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Be it solar, wind, coal, heavy crude oil, gas, biomass or even hydro, relying on a single source of energy for power generation is always somewhat risky. Hydro is cheaper an therefore more widely used here in Brazil and in Paraguay, but thermal generation usually fed by coal and more recently Natural Gas became more common as a backup.