Within the past few years, solar+batteries is starting to win bids against new natural gas generation in many common peak-related situations (not all yet, but increasingly so). The expectation is that solar+storage will win most peak-related bids by 2025 and then win most baseload bids by 2035.

https://www.woodmac.com/press-releases/batteries-renewables-...

After that, it will likely start to displace existing natural gas similar to what it's doing for coal now.

https://www.forbes.com/sites/energyinnovation/2018/12/03/plu...