As fleet electrification accelerates, the conversation has shifted from “when” to “how.” Yet one of the most critical enablers of that transition — the electricity grid — remains a complex and often underestimated piece of the puzzle.
For organisations planning to move from diesel and petrol vehicles to battery electric fleets, understanding how to connect to the grid is now just as important as choosing the right vehicle or charger.
Electrification isn’t just about the charger
The Intium Commercial Fleets Report 2025 found that three-quarters of Business Leaders still believe there aren’t enough charging stations on the routes their fleets drive, and 70% say it takes too long to charge compared with refuelling. However, those statistics only tell part of the story.
As Nathan Rhodes, Managing Director of Intium, explains, the real challenge lies in the invisible infrastructure that powers those chargers.
“The first question we’re often asked is: how do you connect to the grid? For many fleet operators, that’s the hardest part,” says Rhodes.
“Depots, workshops, and distribution centres were never designed for megawatts of charging capacity. You can’t just install chargers without thinking about how that energy gets there.”
Complexity beneath the surface
Unlike petrol or diesel refuelling, EV charging requires power delivery that matches a fleet’s operational profile. This means understanding daily load peaks, existing site supply, and the limits of local substations.
Intium’s research found that while 70% of fleet operators with EVs use company-owned charging points, most still depend on grid capacity that was never designed for electrified transport.
“There’s a lot of complexity in replacing or upgrading current infrastructure without disrupting operations,” Rhodes explains.
“Grid connection, planning approvals, and land access can all become bottlenecks. Solving these issues early determines whether a fleet electrification project succeeds or stalls.”
The hidden bottleneck
Even as new EVs enter the market at record speed, connecting depots to the grid can take years. This bottleneck is already limiting the rollout of public charging infrastructure and threatens to slow private fleet investment.
Rhodes says it’s not just about delays — it’s about coordination.
“In a single project, you might have fleet managers, depot planners, local councils, energy networks, and construction contractors all working on the same problem,” he says.
“Without an integrated approach, even a well-funded fleet can get stuck waiting for approvals or transformer upgrades.”
Planning for the future fleet mix
The Intium report also revealed a strong appetite for EV transition, with two-thirds of Business Leaders expecting the majority of their fleets to be electric within five years. But to achieve that, grid planning needs to happen now — not after the vehicles arrive.
Fleets with large energy demands, such as logistics companies or councils operating depots, will need to assess both their immediate and future load requirements. This means mapping power availability, identifying opportunities for on-site solar and battery storage, and planning staged upgrades to align with vehicle replacement cycles.
Integrating renewable energy and storage
Rhodes says the economics of charging infrastructure can be improved by combining EV chargers with renewable generation and battery storage.
“We’re now seeing projects where battery storage, charging, and even small solar arrays are co-located. This helps smooth demand, reduce costs, and make the business case stack up,” he explains.
“The more you can control your energy flow — when you draw from the grid and when you store power — the more resilient and efficient your operation becomes.”
This integrated approach also opens the door to new funding and investment models. Rhodes notes that infrastructure combining storage and charging is increasingly seen as “bankable,” attracting interest from institutional investors and super funds that now recognise electrification assets as long-term infrastructure plays.
The council and corporate opportunity
For Fleet Managers in local government and large corporate fleets, early planning offers the biggest advantage. Many councils already control land and have existing connections, which can be leveraged for fleet depots, waste collection yards, or works depots.
Similarly, large corporates with multiple sites can develop a national charging strategy, ensuring each facility has the right capacity before the first EVs arrive.
“The fleets that succeed in electrifying at scale will be the ones that plan grid access early,” Rhodes says.
“It’s about aligning your transport strategy with your energy strategy — they’re two sides of the same coin.”
Looking ahead
Australia’s grid is evolving rapidly, but connection delays and limited capacity in regional areas remain barriers to equitable EV adoption. Collaboration between fleet operators, governments, and infrastructure partners will be essential to overcome these challenges.
The findings from Intium’s Commercial Fleets Report 2025 are clear: fleet leaders recognise the operational benefits of EVs, but progress will depend on the invisible connections that power them.
As the transport sector moves toward zero emissions, the future of fleet electrification won’t just be decided in showrooms — it will be built at the substation.
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