In the US, the rare instances of more open markets for electricity generation markets, like ERCOT, and seeing wind/solar/storage dominate over natural gas in new deployments.
This wouldn't happen unless they actually were cheaper.
However, regulated monopolies in other parts of the country have no incentive to innovate or use newer technology. Thus they make their five year plans (usually called IRPs) with opaque financial models with out-of-date costs, leading to bad decision making.
