Charging Your EV and Keeping the Lights On: Apartment Power Checks for Bangalore Buyers
Electrical design is one of the least visible parts of an apartment and one of the most expensive to fix later. A buyer who owns or expects to own an electric car, or who hates outages, should read it as carefully as the floor plan. This article follows the power from the BESCOM connection to the parking bay and the flat, and ends with what to demand in writing.
Where the Trouble Starts
A building has only so much sanctioned electrical load, and everything draws on it: lifts, pumps, lights, the flats and now cars. Transformers and cables carry it, and the owners' association governs its use. If the original design left no room for chargers, adding them later can involve a fresh sanction, new cables and a vote among owners.
Sales visits seldom cover this ground. Putting two or three direct questions to the seller costs nothing, while the same enquiry made after possession can drag on for months and end with owners sharing the bill.
Karnataka's Position
Back in 2017, Karnataka became the first Indian state with an EV policy. Obligations on builders followed through the state regulator, KERC, whose 2019 amendment to the Conditions of Supply was refreshed in August 2024. Any building drawing 250 kW or more of requisitioned load, and more than 5,000 sq m built up, must include two charging points as a minimum.
Two is the least a large complex should offer. An association can fit a sub-meter on the charging load and be billed in BESCOM's EV category, LT-6(c), at a rate fixed each year in the tariff order. Check the present rate with BESCOM instead of trusting an old figure.
Guidelines from the Ministry of Power dated September 2024 call a charger in group housing a community station, for the use of residents and visitors. An owner may use the connection already in place or take a separate metered connection.
Needs of a Home Charger
For charging at home, the owner needs a slot within cable reach, spare capacity and permission. Overnight charging using an AC wall charger rated 7.4 kW, or the smaller 3.3 kW, is typical for electric cars in India, whereas a scooter manages on a 15 A socket. Because 7.4 kW can exceed what a 2 BHK is sanctioned, the feed to the parking level decides what is possible.
A good installation usually has these features:
- The flat's slot allotted in writing, beside a wall or pillar that can carry a charger
- Cable trays or conduits laid in advance from the electrical room
- Headroom on the basement panel and its transformer
- A dedicated meter or sub-meter for the charger
- Earthing and protection certified by a licensed electrician
Surface and stilt parking is easier than a deep lower basement. Stack parking is hardest, since the car travels up and down and the charger cannot.
Who Is Billed
Three billing patterns exist. If the charger is wired to the flat's own meter, its units appear in the owner's household bill. On a sub-meter it draws common supply, and the association bills the owner for what is recorded. For shared chargers, an operator sets up units in common parking and residents pay by the unit through an app.
The flat's own meter is easiest where each flat has a BESCOM meter and the cables are short. Shared chargers suit a complex short of spare load, because a single machine serves many cars. Slot-level chargers on sub-meters are the most convenient and need the most capacity.
Backup Power for Each Flat
Diesel generators, usually below ground or in a services yard, provide most backup in Bangalore apartments. Common services such as lifts, water pumps, corridor lighting and security systems are generally covered in full. A flat receives a capped share through a limiter, and the cap in kW is the figure to ask for.
Caps vary a great deal between projects. With 1 kW a household can run a refrigerator, a television, a router, fans and lights. A cap of 2 to 3 kW also allows a washing machine, a mixer-grinder or a single air conditioner at a time. Beyond 5 kW, daily life carries on much as it does on the mains.
Ask whether crossing the cap trips the flat and needs a manual reset. Ask whether the switchover is automatic and how many seconds it takes. A 30-second blank is a minor nuisance in front of the television and a real problem for someone on a desktop computer.
Running Costs and the Cost Sheet
Owners pay for diesel, servicing and generator replacement, either within the maintenance charge or as a line of its own. Many associations use a dual-source meter and price generator units above mains units. Larger backup gives more comfort and also costs more, so choose an allocation that suits the household.
In a new project the generators normally appear in the cost sheet under infrastructure or electricity charges. Run that sheet through the EMI calculator to see what it does to the loan and the cash needed at the start.
Living With the Association
After handover the association manages everything held in common, which covers parking floors and electrical rooms alike. A resident asks in writing, uses an approved electrician, bears the cost of cabling and accepts the metering rules. A written EV policy settles it all by naming permitted chargers, cable routes, fire safety conditions, billing and an approval deadline.
If the developer still manages the complex, read the handover documents for their wording on spare load and charging. Those papers will bind the association later on.
Questions for the Seller
Developers in Bangalore hear these often, and a clear reply in writing counts in their favour. When buying a resale flat, take the same list to the association office.
- How many charging points are in the sanctioned plan, and in which spots?
- Is load kept spare for further chargers, and how much for each bay?
- Will my slot receive a conduit and a metered point of its own, or are only shared units close by?
- What generator cap in kW does each flat get, and does it change with flat size?
- How were generator units billed last year, and what did each month cost?
- Does a written EV policy exist, and what is the approval time?
- Does the sale agreement, or its annexure, record all of this?
Verbal comfort from a sales desk is not enough. RERA gives a buyer rights over the specifications annexed to the sale agreement, so the numbers belong there.
