All nice and beautiful, but I don't understand how will this work in the winter in the temperate areas. You maintain parallel natural gas installations and ramp them up in the winter? Does this doubles the cost?
From a global perspective, people living in temperate areas are actually the exception, not the rule (if a disproportionately economically successful exception).
The likely implication of this is that, long term, unless wind power starts going back down the cost curve, or you're fortunate enough to have lots of hydro power, Northern Europe, Canada, northern China and so on are going to have much more expensive energy than more equatorial places.
Wind power. Mix with emergency reserves running on open cycle gas turbines, if deemed necessary, preferably running on with carbon neutral fuel. Optimize for lowest possible CAPEX.
That is contingent on that we’re not wasting money and opportunity cost that could have larger impact decarbonizing agriculture, construction, aviation, maritime shipping etc.
One of the few problem of nuclear is summer time water use. Combining solar with nuclear would be the best option in my opinion.
This probably depends a lot on how close you are to the equator. Here in Germany output of solar in winter is negligible, and if there is no wind, which can happen for several consecutive weeks, we need a backup. No utilities company will build a fossil power plant that will be used only a few weeks per year, so our government will have to step in to make sure this happens.
On top of this you have very high costs for an increasingly complex grid, which needs to be built and then maintained. Prices will never again be as low as in the fossil/nuclear era.
Not having to burn gas is cheaper than burning gas. There will be a decade or two of transition with rarely used gas turbines getting their yearly packet in a short amount of time. Eventually other tech will take over, or the gas infrastructure will pare down and be cost optimized for its new role or rare usage.
Europe, and Germany and the UK in particular, are really poorly suited to take advantage of this new cheap technology. If these countries don't figure out alternatives, the countries with better and cheaper energy resources will take over energy intensive industries.
This is not a problem for solar and storage to solve, it's a problem that countries with poor resources need to solve if they want to compete in global industry.