The tipping point for solar and wind being cheaper (LCOE) and cleaner to deploy and maintain rapidly overtook all other forms of energy (coal, gas, nuclear, and hydro) in more and more markets over time thanks to the economies-of-scale of more deployments and improved manufacturing processes. There are some markets where coal or gas is the cheaper and expedient solution for now where local LCOEs are different, but not for long.

https://ourworldindata.org/cheap-renewables-growth