IÉ 90000 Class

The Iarnród Éireann 90000 Class is a type of electric multiple unit which will be deployed on the DART network in Dublin, Ireland. In December 2021 Iarnród Éireann chose Alstom as supplier of up to 750 carriages, in five- or ten-carriage trains, and made an initial order of 19 five-carriage trains, 13 of which will be battery electric multiple units; a second order of 18 five-car battery units was placed in December 2022 and a third order of 20 units in December 2025. The class is part of the DART+ project, which will expand DART services to lines currently served by diesel multiple units, and the battery units will be used on the non-electrified lines to Maynooth, Hazelhatch and Drogheda. It is being constructed by Alstom at its facility in Katowice, Poland. The first unit arrived in Ireland in late 2024 and the first unit, 90001, started testing between Inchicore and Hazelhatch in February 2025; in October 2025 it was revealed that the class would not enter service until the second quarter of 2027 because of battery issues. The five-car articulated trains are 82 metres long, have a capacity of 551 passengers including 204 seats, a maximum speed of 145 km/h, and lithium-ion batteries of 840 kWh with an expected range of 80 kilometres.