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New Zealand BEMU class electric multiple unit
Type of battery-electric trainsets being manufactured for Metlink Wellington From Wikipedia, the free encyclopedia
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The New Zealand BEMU class "Tūhono" of 18 battery electric multiple units is a type of passenger train on order for Metlink in Wellington, New Zealand.[2]
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Background
The Tūhono BEMU battery-electric multiple unit trains were ordered in September 2025 to replace the diesel-hauled Capital Connection and the Wairarapa Connection trains for the lower North Island for services from Wellington railway station to Palmerston North and Masterton. Three companies had been short-listed for tenders: Alstom (France), CAF or Construcciones y Auxiliar de Ferrocarriles, Spain and Stadler Rail, Switzerland.
They are to be designed, built in India and operated by Alstom in a 35-year contract valued at $NZ 1,065 million (€ 538 million), which will be the first design, build and operate contract for Alstom in New Zealand or Australia. The new trains are due to arrive in 2029 and enter service in 2030.[3]
The Wairarapa Line to the Masterton railway station is 91 km including 58.5 km non-electrified. The non-electrified section from the Upper Hutt railway station includes gradients up to the Remutaka Tunnel on both sides and the gradient in the tunnel.
The Manawatu section of the North Island Main Trunk to the Palmerston North railway station is 135 km including 81 km non-electrified. The non-electrified section from the Waikanae railway station is flat.
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Design
The trains are based on Alstom’s Adessia Stream B trains, but for the narrow Cape gauge and with front evacuation doors in the control car at each end (required in tunnels).
Artist's view of new train, see "View of proposed BEMU". GWRC. 2025. with one pantograph; indicating that the consist is to have one power car.
For possible layouts see "Layout (proposed) of BEMU carriages". GWRC. 2025.
Artist's views of new train interior, see "Views of BEMU interior". Metlink. 2025. The livery will include symbols by Māori-owned company Indigenous Design and Innovation.
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Funding and ownership
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The trains will be purchased by the Greater Wellington Regional Council.
The government will fund 90% of the cost or $800.2m; $455.3m from Crown funding and $347.5m from the National Land Transport Fund. The rest will be funded by the Horizons Regional Council and the Greater Wellington Regional Council.[4].
They will operate from the existing 1500V DC overhead lines to Waikanae and Upper Hutt, then to Palmerston North and Wairarapa will be battery powered. They will have charging points at Masterton and Palmerston North where they can be rapid charged in under 20 minutes (day, for return trip) or slow charged overnight. Alstom will have a maintenance depot at Masterton Railway Station, to have a staff of thirty.
They will have wheelchair, cycle and pram facilities plus water dispensers and vending machines. As a full trip will take over an hour they will include an accessible and a standard passenger toilets, unlike the Matangis which have neither.
They will be the first Battery Electric Multiple Unit in New Zealand, although similar BEMUs operate in Europe (Croatia, France, Germany, Latvia, United Kingdom etc) and Japan.
The Greater Wellington Regional Council who are purchasing them said they will have a maximum speed of 120 km/hr, and the number of peak-time trips will be at least doubled. Station platform upgrades will be needed, and building upgrades at Levin and Otaki stations, a new signalling system Upper Hutt to Masterton plus additional passing loops at Maymorn and Woodside and upgrading or removal of road level crossings; see "Future Rail". Metlink. 2025.
Replacement of the existing trains which use 50-year–old carriages (the New Zealand British Rail Mark 2 carriage) has been proposed for several years; although earlier proposals by the Greater Wellington Regional Council were for diesel plus battery hybrids. The present minister Chris Bishop had asked for the hybrid diesel/battery option to be considered.
See also
References
External links
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