Fleet and Depot EV Charging in Malaysia: How Much Electrical Capacity You Actually Need
The short answer: the charger rating is not the number that decides your depot. Take the kWh each vehicle uses in a day, divide it by the hours that vehicle actually sits parked, and that is the kW each bay has to deliver. Multiply by how many vehicles charge at the same time and you have the depot's total load. Only then do you find out the thing that really sets your budget, which is whether your existing TNB supply can carry that load or whether you need load management or a supply upgrade.
Start with energy, not with chargers
Most depot enquiries we get open with a charger model. That is the wrong end of the problem. A delivery van that covers 150km a day and uses roughly 0.2kWh per km needs about 30kWh back each night. If it is parked from 7pm to 7am, that is 30kWh across 12 hours, or about 2.5kW. One tired three-pin socket would nearly do it. The same van on two shifts, back for only three hours, needs 10kW, and now you are in a different conversation entirely.
So the first thing to measure is not power. It is dwell time: how long each vehicle is genuinely stationary and plugged in. Fleet managers usually know this to the minute, and it is the single most useful figure you can bring to a site assessment.
Energy needed per vehicle per day | Hours the vehicle is parked | Power each bay must deliver |
20 kWh (light city use) | 12 hours overnight | About 1.7 kW |
40 kWh (full day of runs) | 12 hours overnight | About 3.3 kW — a 7kW AC bay is ample |
40 kWh (full day of runs) | 6 hours between shifts | About 6.7 kW — a 7kW AC bay, with nothing spare |
60 kWh (long-distance van) | 4 hours | About 15 kW — 22kW three-phase AC |
60 kWh (long-distance van) | 1 hour turnaround | About 60 kW — DC territory |
Add roughly 10% on top for charging losses, and leave headroom for the vehicle you have not bought yet. The numbers above are arithmetic, not a quotation — your real figures come from your own telematics.
Your supply capacity is the real constraint
Ten bays at 22kW is 220kW if every one of them pulls full power at the same moment. Very few Malaysian depots have that sitting spare, and for buildings on a maximum demand tariff the peak you create is itself a cost, every month, for as long as you own the site. This is the same mechanism that decides industrial projects, which we worked through in detail here: EV charging for factories and industrial buildings in Malaysia.
The good news for fleets is that a depot is the easiest place in the world to avoid that peak. The vehicles are parked for hours and nobody is standing there waiting. Load management shares whatever power you have across the bays and finishes every vehicle before the first run of the morning, which usually costs far less than upgrading the incoming supply. Where the overnight window is short, or where the site is already close to its limit, then a supply or switchgear upgrade genuinely is the answer — and it is better to find that out during a survey than after the chargers arrive.
Licensing: the question most depot owners get wrong
Whether you need a licence does not turn on the word "fleet". It turns on who is being supplied with electricity and on the installation itself. Charging only your own vehicles behind your own meter is treated differently from a charge point that other companies or the public pay to use. Suruhanjaya Tenaga sets the rules, and an electrical competent person has to sign the installation off either way. Lowyat.NET reported the Energy Commission clarifying these licence rules as DC chargers spread (report), and Malay Mail reported enforcement against a Johor EV charging firm found operating without a licence (report). It is not a formality. We set out who needs an EVCS licence and why here: does your building need an EVCS licence?
What people actually ask
Malaysian discussion of commercial charging is dominated by three worries, and they are worth answering honestly before you commit to a depot build.
"Sunway EV chargers to cost RM4.00 per hour" — a Lowyat forum thread title. Per-hour pricing is what drivers notice, and it is why depot charging on your own supply is usually the cheaper way to run a fleet. Thread
"Energy Commission clarifies EV charging licence rules" — Lowyat.NET, 2025. The recurring question is simply: does this apply to me?
"Firm operating without licence, says Energy Commission" — Malay Mail, after a fire at a Johor charging bay. Installation quality is a safety question, not paperwork.
And the one we hear most on the phone: do I need three-phase? For anything beyond two or three bays charging together, yes, plan for it.
If your vehicles come home at night and leave in the morning, AC wins on nearly every measure: cheaper hardware, simpler electrical work, less stress on the battery, and a load you can spread across hours. DC earns its place where vehicles cannot sit still — short turnarounds, shift handovers, a mid-day top-up that keeps a route running. Most Malaysian depots end up with a lot of AC bays and one or two DC units for the exceptions, rather than one or the other.
Mixed fleets need one more check: connectors. Malaysia is a Type 2 and CCS2 market, the same as Europe, but older Japan-spec vehicles brought in secondhand may be CHAdeMO. We covered that here: CHAdeMO in Malaysia. Check the connector on every vehicle in the fleet before you order a single charger.
The order to do things in
Pull daily kWh per vehicle and real dwell times from your telematics.
Work out the kW per bay and the depot total, then add headroom for growth.
Get an electrical survey of your incoming supply and switchboard capacity.
Decide load management versus a supply upgrade on the numbers, not on instinct.
Confirm the licensing position for your specific case before building.
Choose chargers last, and only then.
Related EvGuru pages
Frequently asked questions
Does a private fleet depot need an EVCS licence in Malaysia?
Licensing turns on whether electricity is being supplied to third parties and on the installation itself, not on the word fleet. A depot charging only your own vehicles is treated differently from a charge point the public or other companies pay to use. Suruhanjaya Tenaga sets the rules and an electrical competent person must sign off the installation, so confirm your case before you build.
Do I need three-phase power for a fleet depot?
Almost always, yes. Single-phase 7kW per bay works for long overnight dwell with modest daily mileage, but once you have several vehicles charging at the same time the total load, not the per-bay figure, is what your supply has to carry, and that is a three-phase conversation.
Is DC fast charging worth it at a depot?
Only where vehicles cannot sit still. If your vans return at 7pm and leave at 7am, AC charging across that window is cheaper to install and kinder to batteries. DC earns its cost on short turnarounds, shift handovers and vehicles that must be topped up mid-day.
What is load management and do I need it?
Load management shares a fixed amount of available power between chargers instead of letting them all draw full power at once. It is usually cheaper than upgrading your incoming supply, and on a depot with a long overnight window it costs you almost nothing in practice because the vehicles are parked anyway.
How long does a depot installation take?
The chargers are the quick part. The timeline is set by the electrical survey, any supply or switchgear work, and the approvals that go with it. Book the site assessment first: it is the step that tells you whether you are doing a simple installation or a supply upgrade.
Request a free site assessment — send us your vehicle count, daily mileage and the hours your vehicles are parked, and we will tell you what your depot needs before anyone quotes you hardware.
