This is an HTML version of an attachment to the Official Information request 'Reports/Studies into NIMT Electrification North of Waikanae'.

Response: OIA2022.11 
8 April 2022 
To Wade Gosper 
Via – [FYI request #18806 email] 
Dear Wade 
Official information request for information on electrification  
I refer to your official information request of 7 March 2022, asking for the following information:  
I am writing to enquire whether there are any Reports or Studies into the Electrification of the NIMT north of 
Waikanae - both historic and recent that can be made available. I am particularly interested in any recent 
reports that may have been completed following the media release in July 2021 that the government wants 
to fast track plans for electrification to Levin. 

We have identified one report – as attached dated 31 May 2021. This is released in full under the OIA, with 
the only redactions completed under privacy grounds (removal of authors signatures). 
We comment that the information in this high-level study is feeding into other work KiwiRail is currently 
undertaking - such as an indicative business case that considers further electrification, potential alternative 
technologies, and encouraging freight mode shift to rail in the decades ahead; and separate work around 
network improvements to support the business case that Greater Wellington Regional Council is currently 
working on around long distance commuter trains to Palmerston North and the Wairarapa.  
So rather than electrification, there may be better economic options longer term.  
Greater Wellington Regional Council is currently working on a business case for replacement commuter 
trains, with potential for them to be bi-modal. For those types of trains to operate there would need to be 
some infrastructure upgrades, including the further electrification of a small section of the line between 
Waikanae and Palmerston North.  
We are currently in the early stages of looking at the feasibility of these required upgrades and there is no 
timeframe for further steps.  
KiwiRail is exploring other options for low emissions freight ourselves, including tri-mode locomotive 
technology which only requires a partially electrified network to operate on. Tri-mode locomotives work by 
using the existing electric overhead infrastructure where it exists and then use energy storage (battery) in 
between electrified sections.  
The locomotive has a small diesel engine to use to charge the batteries if required too. This exploration of 
locomotive technology is also in a preliminary stage 
Please get in touch with any further questions. 
You have the right to seek an investigation and review by the Ombudsman of this decision. Information 
about how to make a complaint is available at or by calling free-phone 
0800 802 602. 
Yours sincerely 
Dave Allard 
Government Relations Advisor, KiwiRail