However, it's moving to electric, with the first electric locomotive undergoing testing now, and the first electric fleet arriving this spring, with fully electric service expected to begin in two years.
Did you miss the wires strung above the tracks? They're working on it:
It's 2022 today and they estimate to complete the project in 2024. Italy had electrified lines in the 1930s, for comparison. There is really no excuse however you look at it. I guess better later than never.