The shortlisted bidders are:
- Alstom
- Bombardier - CAF
- CRRC Zhuzhou Electric Locomotive, and
- Škoda Transportation.

A winning bidder is due to be selected in December and deliveries will begin in the first half of 2020. All of the 32m-long vehicles will enter service by the end of 2022.

The contract will include an option for 20 additional vehicles.