To actually answer this question is hard. The best answer I've seen is between 3% and 10% of total grid capacity, depending on interconnectivity and geographical diversity[1].
That's for a 100% renewable approach, which is great. Personally I think there is a role for gas fired stations - these produce about 50% of the emissions of coal stations, are cheap and quick to build (very roughly $1M for 1MW) and most importantly can ramp up and down power generation quickly and economically.
That's for a 100% renewable approach, which is great. Personally I think there is a role for gas fired stations - these produce about 50% of the emissions of coal stations, are cheap and quick to build (very roughly $1M for 1MW) and most importantly can ramp up and down power generation quickly and economically.
[1] https://www.sciencedirect.com/topics/engineering/grid-energy...