https://www.americanthinker.com/articles/2019/05/the_solar_energy_racket.html
If solar energy were not propped up by various government policies and subsidies, no utility would buy it. Not only does solar not work at night, but it does not work if it is cloudy or if a cloud passes in front of the sun.
Utility-scale solar requires a large solar farm consisting of photovoltaic panels. For $100 million, one can buy a solar farm capable of generating about 80 megawatts of electric power when the sun is squarely shining on the panels. Depending on the geographical location and the climate, the average power generated will be about 18 megawatts, more during the day and nothing at night. More in summer and less in winter. If the power can be sold for $50 a megawatt-hour, about the cost of wholesale electricity generated by natural gas, the annual revenue earned by the plant would be $7.8 million. But why would anyone want to pay $50 per megawatt-hour for electricity that does not work at night or when the weather is bad? Better to buy it from a natural gas plant that one can count on.
How much would a utility really be willing to pay for erratic electricity from a solar farm? The answer is $20 per megawatt-hour or less. The reason is as follows. No utility would ever incorporate a solar plant to reliably provide electricity. Solar electricity is unreliable. But solar electricity, if it is cheap enough, could be used as a supplement to save fuel in a utility’s main natural gas plants. When the solar was working, some of the utility’s gas plants could be throttled back to save fuel. The fuel to generate a megawatt-hour of electricity in a modern natural gas plant costs about $20.