Capital costs is incomplete, you need to look at lifetime costs versus lifetime production to get a more useful average - Levelized cost of energy (LCOE)

https://en.wikipedia.org/wiki/Levelized_cost_of_electricity

https://www.lazard.com/research-insights/2023-levelized-cost-of-energyplus/

https://ourworldindata.org/grapher/levelized-cost-of-energy

https://www.iea.org/reports/projected-costs-of-generating-electricity-2020