Leading is not the same as replacing. See this figure https://en.wikipedia.org/wiki/Energy_in_Ireland#/media/File:...

In 2000, coal was about 20% of the energy mix, gas another 20%, oil about 50%. Wind was 0%. In 2024 coal was about 2%, gas still 20%, oil still 50%, but wind grew to about 15%. It seems that wind actually replaced coal. It is not only logical, but good, that wind first replaced coal (dirtiest), and maybe from now on is will start to replace oil. Only after many decades, or maybe never, gas will be replaced.

No, it's not?

https://ec.europa.eu/eurostat/web/interactive-publications/e...

  crude oil and petroleum products (37.7%)
  natural gas (20.4%)
  renewable energy (19.5%)
  solid fuels (10.6%)
  nuclear energy (11.8%)

(2023 numbers)

So natural gas was just barely more than renewables in 2023, but according to the source below the line was crossed in 2025 and renewables now provide more than all fossil fuels put together:

https://electrek.co/2026/01/21/wind-and-solar-overtook-fossi...