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
Otford railway tunnel Otford railway tunnel The Otford railway tunnel is a heritage-listed former railway tunnel on the Illawarra railway line at Otford, City of Wollongong, New South Wales, Australia. It was designed by the New South Wales Government Railways, and built by W. Rowe and W. Smith (tunnel) and Mr. McDonald (vent shaft). The property is owned by RailCorp, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999. The Otford Railway Tunnel was constructed in 1888 by the firm Rowe and Smith, who built 7 of the