As long there is no need to use gas during periods of non-optimal weather, then solar and wind is great.

The lithium battery plant in northern Sweden went bankrupt so its difficult to say how to solve the storage solution by both being cheap and financial viable. New battery solutions are being made, but in the end it need to be cheap enough over the long term. The current use of gas for non-optimal weather means prices jump up by a factor of around 100x of what it is during good weather, and the average price in nordpool (the northen pan-European power exchange) is about 20x than what you get with good weather. That should illustrate how much variability there is in the energy price right now, and how much people are paying for that gas powered electricity in periods of non-optimal weather conditions.

A lot of fossil fuel subsidies goes directly to support the high variability power grid, and they more than doubled during 2022 when the gas prices went up. It is incredibly expensive, likely more than nuclear, to have a grid supported by renewables during optimal weather conditions and fossil fuels during non-optimal weather conditions. It also generate a lot of waste in term of pollution which has a bigger issue both short and long term than nuclear waste.

Nordpool prices are not true market prices, as much of the demand does not participate in the market. For example, many residential customers still have fixed-rate contracts, and some power companies sell the power they generate to their owners at cost price.