That is the same conclusions I reached. The gaps makes up such a significant portion of a year that the economical aspects of running fossil based power plants

That is the same conclusions I reached. The gaps makes up such a significant portion of a year that the economical aspects of running fossil based power plants has not really changed while the overall power consumption moves towards renewable sources. A fossil based power plant will run when the renewable sources can supply the demand, dictating the cost by which ever of gas, coal and oil has cheapest combination of fuel price, investment and c02-costs.