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| I don't have a complete grasp on the economics, I'm just looking at the chart above and the costs per mW of current construction. In regards to having backup for themselves, I believe solar arrays with battery storage are already on par with natural gas plants per mW.
Fossil fuel plants don't operate at 100% capacity now and they're not really supposed to, and we have additional plants to meet peak demand.
Looking at the graph, if possible, would it not make the most sense to have fossil fuel/nuclear plants that provide 10-12GW or so operating at all times near 100% capacity or whatever is most efficient for them - solar comes online as the sun rises to meet demand, which obviously is highest when the sun is also highest and longest in the sky - possibly peak plants to make up any area on the fringe of sunrise and sunset.
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Grid tie solar lease rates
