On 12 December 2009, locomotive 144 brought an ex-Mark 3 Generator van (7608) from Dublin to York Road Depot, Belfast. Then again on 22 December 2009, locomotive 8209 brought another ex-Mark 3 Generator van (7613) from Dublin to York Road. NIR received a total of four ex-Mark 3 Generator vans. They have been painted in Enterprise colours and wired with push/pull to run with the Enterprise sets to replace the HEP supplied by the locomotive. These Generator vans entered service in September 2012.