"63.7% of the kilometers of railway lines managed by Adif and Adif AV are electrified. In addition, 83% of train-km is done by electric trains."

"Spain opts for massive electricity savings by using railway tech" https://www.banenor.no/en/startpage1/News/spain-opts-for-mas...

"Percentage of the railway lines in use in Europe in 2019 which were electrified, by country"

https://www.statista.com/statistics/451522/share-of-the-rail...