EV charging in an apartment building — without blowing the main fuse
A clear and fair system for the association: real-time control, individual billing and room to grow.
Start with a single charging point and expand as residents actually need it — the same control system grows with you.
EV charging is the first logical step for an apartment building
Start with a fitting format and grow as needed — Mini today, Medium later, or a combination from the start.
Typical problems
- Main fuse can't handle multiple chargers at once
- Who pays for whose charging?
- The association must decide, but has no data
- The system must grow with the car fleet
The HUBCORE solution step by step
- 1Site assessment and metering
- 2Fuse & connection analysis
- 3Chargers installed with load management
- 4Per-apartment billing
- 5Association dashboard, reports and invoices
- 6Expansion to battery, solar and building systems
What does HUBCORE assess and measure on site?
We check the existing connection size and how much capacity is left for charging after the building's own consumption.
We measure how load is distributed across phases and when the daily peaks occur.
We assess board condition, free space, cable cross-sections and whether protection and earthing are suitable.
We look at parking layout, distance from the board and possible routes along walls, trays or trenches.
We check whether usable internet exists on site or mobile connectivity is needed so devices can be monitored.
If data is scarce, we install a temporary logger to see real consumption over a longer period.
We carry out the necessary verification measurements and assess whether the installation can be safely used.
Important: whether the main fuse needs upgrading only becomes clear after measurement and technical analysis. Often the existing connection is enough when charging is dynamically managed.
One complete solution for the housing association
Smart charging up to 22 kW. Actual power depends on the vehicle, the building's available grid capacity, load management and any battery buffer.
Charging power adapts to the building's real consumption so the main fuse is not overloaded.
Each user's consumption is measured separately, so nobody pays for someone else's charging.
The association decides which points are private, which are shared and whether guests or public use are allowed.
Compatible meters can be connected into one view so building data is together and comparable.
We monitor major consumers' energy use to show where the building's energy actually goes.
The control layer is prepared for adding solar panels and battery storage at a later stage.
Device status is visible remotely, faults raise an alert, and maintenance follows an agreed process.
The architecture anticipates vehicle-to-home/building energy flow in the future. This is not a guaranteed feature today and depends on vehicles, equipment and regulation.
How metering and cost sharing work
- Each user's charging session is identified by an account or an RFID card.
- Billing is based on the charger's metering data or a separate MID meter reading.
- A monthly consolidated invoice, prepayment or immediate guest payment are all possible.
- Residents and guests can have different tariffs, decided by the association.
- Infrastructure, maintenance and energy components are clearly separated on the invoice.
What we need for a preliminary assessment
- Association name and address
- Number of parking spaces
- Approximate number of residents interested in charging
- Main fuse size, if known
- Photos of the main distribution board and the parking area
- Existing electrical diagrams or 12 months of consumption data, if available
Start small, plan for the whole
- 1Initial data
Address, number of parking spaces, interested residents and the known main fuse size.
- 2On-site inspection and measurements
Review of the board, routes and load; a load logger if needed.
- 3Technical options and a price range
We present options with their benefits and limits so the association can compare.
- 4Association decision and electrical design
A general-meeting decision and a compliant electrical design before works begin.
- 5Installation and verification measurements
Installation with partners and safety verification measurements before commissioning.
- 6User setup and billing
User accounts, RFID, permissions and billing logic are agreed and configured.
- 7Remote monitoring, maintenance and expansion
Day-to-day monitoring, maintenance and adding new charging points as needed.
Request a preliminary technical assessment
Start with a single charging point and expand as residents actually need it — the same control system grows with you.
Frequently asked questions
- Does the main fuse always need upgrading?
- No. Dynamic load management keeps charging within available capacity and the existing connection is often enough. Only measurement and technical analysis give a definite answer.
- Can we start with just one charger?
- Yes. An association can start with one point and expand later. What matters is designing control and cabling for growth from the start.
- Who pays for charging?
- The person charging pays. Sessions are tied to an account or RFID card and consumption is metered separately, so charging energy does not fall into shared building costs.
- Can the charger belong to the association or to an apartment owner?
- Both models work. The association can own and manage the points, or an owner can build their own point under shared control.
- Can guests charge?
- Yes, if the association wants it. Guests can get a separate tariff and immediate payment, and access can be limited to selected points.
- Can the system be expanded later?
- Yes. New points can be added and the same controller redistributes available capacity. Expansion is easier when cabling was planned with spare capacity.
- Can HUBCORE also connect water and heat meters?
- Electricity, water and heat meters with a suitable interface can be brought into the same view. Compatibility depends on the specific meters and existing read-out setup.
- What happens during an internet outage?
- Charging continues under local control logic and safe limits. Remote monitoring and data transfer resume when connectivity returns, and meter data is synced afterwards.
- Who is responsible for maintenance and faults?
- Responsibilities are agreed before installation: what the device warranty covers, what the service agreement covers and what stays with the association. Fault alerts come from remote monitoring.
Invite HUBCORE to assess your site
We'll give an honest assessment of technical possibilities and next steps.
Request an assessment