Railway electrification in New Zealand Railway electrification in New Zealand Railway electrification was initially adopted by the New Zealand Railways in New Zealand for long tunnels; the Otira Tunnel, the Lyttelton Rail Tunnel and the two Tawa Tunnels of the Tawa Flat Deviation. Electrification of Wellington suburban services started with the Johnsonville Line and Kapiti Line out of Wellington from the 1930s. Auckland suburban services were electrified in 2014–15. Electrification of long distance services on the North Island Main Trunk (NIMT) dates from 1986, although KiwiRail is now considering diesel operation of the NIMT. New long tunnels e.g. the Rimutaka Tunnel and the Kaimai Tunnel
Railway preservation in New Zealand over an existing historic formation abandoned in 1955. This is the route of the former Rimutaka railway and Rimutaka Incline over a distance of some 20 km, including 5 km of the 1 in 15 incline worked by the Fell centre-rail system. Although the Taieri Gorge Railway in Dunedin is a much longer and successful heritage railway at 60 km length, it has the advantage that all its track was still in place when it was set up in 1990. The Rimutaka proposal faces many obstacles from the construction of new track and formation rehabilitation works, to the building of