Peters Opens $110m Christchurch Rail Hub and Unveils First DM Locomotive for South Island
Rail Minister Winston Peters on Thursday opened the upgraded Waltham Mechanical Hub in Christchurch and unveiled the first of 66 new DM Class locomotives for KiwiRail, marking the most visible step in a long signalled programme to replace the 40 to 50 year old DX fleet that has hauled South Island freight for a generation.
The Waltham precinct sits on the original footprint of one of New Zealand’s earliest Government railway workshops, and Peters leaned heavily on that history in his speech at the opening, framing the rebuild as the latest chapter in a story that began when the first track was laid in Christchurch in 1863 under Julius Vogel’s nation building push.
The new maintenance facility cost $75 million, with another $35 million committed to a wider precinct upgrade — a $110 million package that the minister said had been agreed in 2020 and was finally delivering rolling stock and workshop capacity together. The opening was attended by KiwiRail chair Sue Tindal, chief executive Peter Reidy, the ambassadors of Switzerland and Spain, Ngāi Tahu representatives, Christchurch mayor Phil Mauger, Selwyn mayor Lydia Gliddon and Canterbury Regional Council chair Deon Swiggs, according to the published version of the ministerial address.
The 66 DM Class locomotives are being built by Swiss firm Stadler at its Valencia plant in Spain. Forty seven of the new units will work South Island routes, with the remaining 19 deployed in the North Island. The fleet has cabs at both ends to remove the need for shunting around at yard movements, and KiwiRail says the new locomotives offer significantly better fuel economy and hauling power than the DX engines they will replace. The first unit, DM8029, entered service on 21 July 2025 after testing through late 2024, and the order will roll out across both islands over the next several years.
Peters anchored the announcement in KiwiRail’s latest financial result. The state owned operator booked a $73 million profit in the first half of the financial year — ahead of target — and lifted freight volumes by 7 percent at a time when road freight grew only 2 percent. The minister argued this was direct evidence that the long signposted shift of bulk and intermodal traffic from trucks back onto trains was finally happening, and that the case for continued capital investment in track, terminals and locomotives was being borne out in the operator’s books rather than in projection slides.
Figures attached to the announcement put rail’s annual contribution to the national economy at around $3.1 billion, and the Government noted that since 2019 the South Island has received $1.2 billion in rail spending across workshop rebuilds, new locomotives and infrastructure overhauls. That figure spans both Labour led and National led periods in office, a point Peters did not labour but which neatly underlined the bipartisan nature of the underlying capital programme even as the coalition has fought hard with the previous government over how the Interislander ferry replacement should be procured.
The Waltham opening lands in the same week that Trade Minister Todd McClay flew to New Delhi to sign the long awaited Free Trade Agreement with India, and the rail story is being deliberately threaded into the Government’s wider freight and exports narrative. A more reliable South Island rail backbone matters most for the dairy, meat, forestry and horticulture loads that move from inland processors to Lyttelton, Bluff and the South Island ports — the same export sectors the Indian deal is intended to expand.
Opposition response on the day was muted, in part because the locomotive order was first committed by the previous Labour government in 2020 and is not contested in principle. Labour transport spokesperson Tangi Utikere has spent most of the past year focused on the coalition’s handling of the Interislander ferry replacement rather than the locomotive programme. Green Party transport spokesperson Julie Anne Genter has consistently argued the Government should be putting more money into rail and less into roads of national significance, and neither party challenged the Waltham opening directly. Rail unions, including the Rail and Maritime Transport Union, have for several years pushed for the DX retirement and welcomed the arrival of the DM fleet at workshops they had feared would close.
What the Government still has to deliver is the more politically charged half of the rail story — namely a credible replacement plan for the Cook Strait ferries after the cancellation of the iReX project in late 2023 and the more than $500 million already spent on the dropped contract. Peters has placed himself at the centre of that work as Rail Minister and as the lead minister on a ministerial advisory group whose initial outlay drew sharp criticism. Without a working roll on roll off ferry link across Cook Strait, the South Island locomotive fleet still has to break its load at Picton, and the freight share gains the minister celebrated this week remain partly hostage to whatever ship procurement decision the coalition finally lands on.
For now, the political optics of opening a workshop and unveiling a locomotive — both delivered, both visible, both attached to a profitable half year for KiwiRail — give the Government a rare chance to point to infrastructure already in service rather than promised. With the next election due in November, the rail rebuild is likely to feature prominently in coalition messaging on regional development and supply chain resilience over the months ahead.
What do you think — is the rail rebuild quietly delivering for the South Island, or do the unresolved Cook Strait ferry questions still hang over the rest of it? Have your say in the comments below.