Almost every housing society committee we meet has already had the same meeting three times. Someone has a quotation. Someone else has a different quotation. There is a debate about brands, about who pays, about what to charge residents per unit.
Then the site survey happens, and the whole discussion turns out to have been premature — because the society does not have the electrical load to run what was quoted.
This is the single most common reason an EV charging project in a residential society stalls. It is also the easiest thing to check first.
What "load" actually means here
Your society has a sanctioned load — the maximum electrical demand the distribution company has agreed to supply. It was calculated when the building was commissioned, based on flats, lifts, pumps, common lighting and a reasonable diversity factor.
EV charging was not in that calculation.
A single AC home charger is a modest addition. Ten of them, all plugged in between 8pm and 11pm, is not. A DC fast charger is a different order of magnitude again. The question is not "can we fit a charger" — it is "what happens to the rest of the building when several of them run at once".
The three numbers that decide the project
Before anyone quotes you hardware, someone should establish:
1. Your current sanctioned load, and how much of it you actually use. Not the nameplate — the real peak. A society sanctioned for a certain load may be running well below it, in which case there is headroom. Or it may already be close to its ceiling in summer, in which case there is not.
2. Your transformer's spare capacity. Sanctioned load and transformer capacity are related but not the same thing. A transformer shared with neighbouring buildings has less headroom than its rating suggests.
3. The distance from your meter room to the parking bays. This one surprises people. Cable is expensive, and voltage drop over a long run means thicker cable, which is more expensive again. Two societies with identical charger requirements can have materially different costs purely because of where the parking is relative to the supply.
Three outcomes, and what each one means
Once those numbers are known, a society lands in one of three places.
There is headroom. The chargers you want fit inside what you already have. This is the cheapest and fastest case — no DISCOM application for load enhancement, no transformer work, and the project is mostly civil, cabling and commissioning.
There is headroom for a smaller configuration. Very common. The society wanted six charge points and can comfortably run three today. Usually the right answer is to install three, and to size the cabling, conduit and panel for six — because doing the disruptive infrastructure work once is far cheaper than digging the same trench again in two years.
A load enhancement is needed. This means a DISCOM application, and the timeline stops being under anyone's control. It is not a reason to abandon the project, but it is a reason to start the paperwork before ordering hardware, not after.
Load management is a real alternative
If the load is tight, the answer is not automatically "apply for more".
Smart load management lets several charge points share a fixed capacity — each vehicle charges slower when many are plugged in, and faster when the building is quiet. For residential parking, where cars sit for eight or ten hours overnight, slower is usually irrelevant to the resident and saves the society an expensive upgrade.
This trade-off is worth understanding before you pay for capacity you may not need.
Metering: settle it before installation, not after
Who pays for the electricity a charger consumes?
The answer has to be decided before the wiring is designed, because it changes the wiring. Charging off the society's common meter and recovering the cost later is administratively painful and tends to cause disputes. A separate metered supply per charge point, or a management system that meters per user, costs a little more up front and avoids the argument entirely.
Societies that skip this conversation usually end up having it anyway, six months later, with more heat.
What we do first
We do not quote hardware on a phone call. The first step is a site survey that establishes the three numbers above, looks at the parking layout and cable route, and comes back with what the site can actually support — including, sometimes, the answer that a smaller system now and an expansion later is the better use of the society's money.
[VITTHAL: if you can name a completed society project here with permission, add one paragraph — what the site was, what was installed, what the committee was worried about beforehand. One real example outperforms every general statement above.]
If your committee is at the quotation-comparison stage, it is worth pausing and getting the load picture first. It changes which quotation is even relevant.
Thinking about this for your own site?
Share the location and available electrical load — we'll come back with what actually applies, not a brochure.