As long as you add the cost of the gas infrastructure to renewables, sure.

The reason why we have been using fossil gas as peakers for decades are because they are about the cheapest we can build while offering acceptable running costs.

We also have an entire fleet of them, which lives are easily extended as long as we add for example capacity markets to ensure their survival as renewables push down their capacity factors.

And in those extreme circumstances batteries reduce the gas capacity needed, by letting them run efficiently and the batteries handle the peaks just like a hybrid car. They also let you maximise transmission line usage for imports from nearby countries.