Is depot charging worth the investment?

Start with the vehicles, not the chargers

The first question is not about chargers at all. It is how the vehicles actually operate on a normal day. That sounds like a detour. It is usually the whole answer.

Three things matter:

• · When do they come back, and how long do they stay? A fleet parked from 7pm to 6am has an eleven-hour charging window. A fleet on two shifts might have ninety minutes. Those are entirely different projects, with entirely different costs — the first can often use slower, cheaper chargers; the second cannot.
• · How far do they actually run? Not the maximum, the typical day. Most Singapore duty cycles are shorter than operators expect, which usually means less energy per night than the headline battery size suggests.
• · Do they all return at once? If eight trucks arrive within the same half hour and all plug in, your peak demand is eight times one charger. If they trickle back, it isn't. This single question changes the electrical design more than any other.

Only once those are answered does it make sense to ask how much charging power the site needs. Working the other way round — picking a charger, then discovering the duty cycle doesn't fit — is an expensive way to find out.

Then find out what your site can already take

This is the question that most often decides whether a project is straightforward or difficult, and it is rarely the one people start with.

Every site has an existing electrical supply with some headroom. If your charging requirement fits inside that headroom, the project is mostly chargers and cable. If it doesn't, you are into a supply upgrade — and that can cost more than the entire charging installation, take months, and depend on infrastructure outside your boundary.

Two depots with identical fleets can produce completely different business cases for this reason alone. It is also why spreading the charging across the available window is often worth more than buying faster chargers: a smaller peak may keep you inside your existing supply, and staying inside it can be the single largest saving in the project.

If you don't know your spare capacity, our readiness check screens it in about five minutes, and the depot charging page covers how the engineering fits together.

What the grants currently pay

Grant support is the one part of this we can state precisely, because it is published rather than site-specific. It is worth knowing before you model anything, because it changes the capital line materially — and because one of the schemes has a limit that is easy to miss.

The detail worth pausing on is the 500-charger cap on EHVCG. At three chargers per site, that is roughly 167 sites nationally. Singapore has around 52,000 heavy vehicles, and they account for about 31 % of land transport emissions — which is why the schemes exist in the first place. The stated window runs to the end of 2028, but a capped scheme closes when the cap is reached, not when the calendar says so.

We are not going to tell you this makes a project worthwhile on its own — it doesn't, and a grant is a poor reason to build something you otherwise wouldn't. But if a depot is already close to viable, the difference between applying this year and applying later may simply be whether the co-funding still exists. It is worth checking current uptake with LTA before you plan around it.

The grants tracker covers the wider stack, including schemes like ESP and JTC sustainability programmes that can sit alongside.

Every depot is different

Every depot operates differently. A fleet of 20 trucks running two shifts is a very different problem from five trucks parked overnight. Quote a payback period before understanding how a depot actually runs, and you are really describing someone else's site.

Where does the value usually come from?

• · Running more kilometres each day usually increases the fuel saving from switching to electricity. High-mileage fleets tend to see the clearest case.
• · If electrical capacity is limited, good charging design can sometimes avoid an expensive transformer upgrade — and that saving can be larger than the chargers cost.
• · Fleets parked overnight may not need the fastest chargers. A well-planned charging schedule is often more cost-effective than more powerful equipment.
• · For landlords rather than fleet owners, the value is often tenant retention and site attractiveness rather than energy margin.

If a supplier offers you a payback figure in the first conversation, it is fair to ask which of these they assumed.

What the consolidation news means for a depot

The CNA piece is about public charging, but it raises a question worth carrying into a depot decision: if operators are being acquired and exiting, what happens to a site tied to one of them?

Chargers are hardware, but the billing, monitoring and access control are usually software, and often the operator's software. If that operator is bought or leaves, the useful question is what you still own. Two things reduce the exposure, and both are worth raising before signing:

• · Open protocols. Hardware speaking OCPP can generally be moved to another management platform. Proprietary hardware may not be.
• · Who holds the contract with the fleet. If the charging operator bills your tenants directly, their departure is your problem. If you bill, it is a supplier change.

This is a smaller consideration than electrical capacity, but it is a reasonable thing to ask any charging supplier, and the current market makes it a fair question rather than an awkward one.

Where to read the primary sources

Everything above that is a stated fact rather than reasoning comes from these. They are worth reading directly rather than taking anyone's summary, including ours:

• · CNA — Singapore has 36 EV charging companies. Can they all survive? (July 2026), on consolidation in the public charging market.
• · LTA — Strengthening Singapore's Electric Vehicle Ecosystem, which sets out HVZES and EHVCG, the amounts, the tranches and the caps.
• · LTA — Our EV Roadmap, for where heavy vehicles sit in the wider national plan.
• · Ministry of Transport — Electric Vehicles, for the policy rationale behind the targets.
• · Our own grants tracker keeps the current position on each scheme, including the ones that sit alongside these two.

Grant schemes change, and a capped one can close early. Confirm current terms and remaining allocation with LTA before you plan capital around them.

Sources and caveats. HVZES and EHVCG terms — amounts, tranche structure, the 500-charger cap, the three-charger per-site limit and the window to 31 December 2028 — are as published by the Land Transport Authority. Verify current uptake and eligibility with LTA before committing capital, since a capped scheme can close early. Heavy vehicle population and emissions share are LTA figures. This article deliberately contains no site-specific financial projections, and is not investment advice.