Electrifying Australia’s heavy freight fleet could be achieved within as little as five years — far faster and at significantly lower cost than widely assumed — according to new analysis from Janus Electric Holdings Ltd (ASX:JNS).
The company says the transition could be driven not by wholesale fleet replacement, but by converting existing diesel trucks to electric during their normal engine replacement cycles, reshaping expectations around the pace and economics of freight decarbonisation.
Conversion model reframes timeline
Australia’s national freight fleet includes more than 128,000 articulated heavy trucks, with engines typically replaced every five years. That replacement cycle means roughly one-fifth of the fleet undergoes engine renewal annually.
Janus’ analysis suggests that installing electric drivetrains during these scheduled replacements could enable a full fleet transition within a similar five-year window — well ahead of conventional forecasts that often extend into multiple decades.
Chief executive officer Ben Hutt said the findings challenge long-held assumptions about the cost and complexity of electrifying heavy transport.
“Electrifying heavy freight is often assumed to require replacing entire fleets of trucks, which would take decades and be prohibitively expensive,” he said.
“What this analysis shows is that if trucks were converted when diesel engines reach their normal replacement cycle, the transition could occur far faster and at significantly lower cost than many people expect.”
Cost advantage over new electric trucks
The economics underpinning the model hinge on avoiding the high upfront cost of new electric vehicles.
A typical diesel engine replacement costs around $100,000, while Janus’ electric conversion solution is priced at about $175,000. While higher on a like-for-like basis, the conversion remains significantly cheaper than purchasing a new heavy-duty electric truck, which industry data suggests can cost two to two-and-a-half times more than a diesel equivalent.
Converted trucks can also deliver up to 30% lower lifetime operating costs, largely driven by the removal of diesel fuel expenses.
Janus said its technology is already being deployed commercially, with more than 3,500 battery swaps completed and over 600,000 kilometres travelled by converted vehicles to date.
Energy security and supply chain resilience
Beyond cost, the company’s analysis highlights the strategic implications of reducing diesel dependence.
Australia consumes around 32 billion litres of diesel annually, with heavy freight accounting for roughly 30% of that total. At the same time, the country imports about 80% of its refined fuel, leaving supply chains exposed to geopolitical disruptions and oil price volatility.
Janus estimates that electrifying the heavy freight fleet could free up as much as 10 billion litres of diesel per year, materially reducing pressure on national fuel supply.
The shift comes as freight demand is projected to grow by around 35% by 2040, intensifying both fuel consumption and emissions without structural changes to the sector.
Battery swap infrastructure addresses downtime
One of the key barriers to electrification — vehicle downtime — could be mitigated through battery swap systems.
Janus’ platform allows trucks to exchange depleted batteries for fully charged units in around four minutes, offering a faster alternative to conventional plug-in charging and enabling continuous operation across long-haul routes.
The company said deploying swap infrastructure along major freight corridors, including the Hume, Pacific and Nullarbor highways, would support large-scale adoption while maintaining operational efficiency.
Emissions reduction opportunity
Transport remains one of Australia’s largest sources of greenhouse gas emissions, generating more than 100 million tonnes annually.
Electrifying heavy freight — one of the most energy-intensive segments of the transport sector — could deliver meaningful reductions in emissions while improving energy efficiency and lowering operating costs for logistics providers.
Policy settings key to acceleration
Janus said targeted policy support could accelerate the transition even further, potentially compressing timelines into the “single-digit years”.
The company has identified three priority measures:
- incentives for fleet operators to convert trucks during engine replacement cycles
- public co-investment in battery swap infrastructure along major freight routes
- a national electrified freight corridor strategy
Hutt said international developments underscore the opportunity, pointing to zero-emission truck targets at major US ports such as Los Angeles and Long Beach.
“The technology exists, the economic case is proven, and the strategic imperative is clear,” he said.
“With the right policy settings, Australia could accelerate the transition and significantly reduce its reliance on imported diesel.”
The analysis builds on Janus Electric’s broader push into freight electrification, following recent momentum in its commercial rollout and expansion efforts, including strengthening financial footing through its recent FY25 tax refund and growing activity in US port markets — which Hutt recently discussed in an interview with Proactive.
