I'm not sure where that data comes from. Oil was only around 3% in 2024.
https://www.seai.ie/data-and-insights/seai-statistics/electr...
Presumably it's also counting non-electricity energy generation. Road and rail transport still relies heavily on internal combustion engines.
energy vs electricity. oil is a much bigger part of the energy mix due to chemical manufacturing
Primary energy compared to electricity as energy. The first adds energy used in driving, chemical industry etc. the second is just the amount of electricity generated.