Multi-dwelling units are some of the most demanding locations for EV charging. High user density, unpredictable energy usage and shared electrical infrastructure mean the charging system must be reliable, scalable and intelligent. NexBlue’s technology is designed precisely for these environments, using strong connectivity, real-time load awareness and advanced balancing to keep charging safe and efficient.
Understanding Multi-Layer Load Balancing
Traditional load balancing works at a single level. The system sees one incoming supply and distributes the available power across the chargers. This is effective for houses or small commercial sites, but large MDUs often have multiple buildings, multiple distribution boards and separate power constraints.
NexBlue’s new multi-layer load balancing solves this by dividing the site into several intelligent layers.
Example: Three-Building MDU
Imagine one main incoming supply feeding three separate buildings:
Level 1: Main controller
This monitors the total capacity entering the whole site. It ensures the combined charging load across all buildings never exceeds what the main supply can safely support.
Level 2: Building controllers
Each building has its own distribution board. These boards have their own limits, independent of the main supply. A controller in each building monitors usage inside that block and ensures the chargers in that building only use the building’s spare capacity.
Level 3 (optional) : Sub-boards or zones
Large buildings often divide their wiring into several sub-boards or parking zones. An extra layer of load balancing can be added here, allowing the system to distribute power intelligently between floors, car park areas or clusters of chargers.
All three layers communicate and adjust automatically. If Building A is using less power than expected, more headroom becomes available at Level 1. If Building B suddenly has high demand, its Level 2 controller reduces EV charging temporarily without affecting the other buildings. This ensures the entire site operates smoothly without manual intervention.
This layered approach is particularly valuable in MDUs where each building may be wired differently or have different usage patterns.
Reliable Connectivity for Challenging Environments
MDUs often have weak Wi-Fi, long cable routes or underground spaces where connectivity is unreliable. NexBlue products communicate through the cloud, local networks or RF signals when needed. If the internet goes down, chargers continue balancing locally and operate safely without interruption.
This ensures stable performance on any site, regardless of network conditions.
NexBlue Ready: Scalable by Design
EV adoption in MDUs grows gradually. Installing every charger on day one is rarely practical. NexBlue Ready is designed to make phased installation simple and cost-effective.
A NexBlue Ready backplate is installed during the initial electrical works. It includes an RFID tag that stores the configuration of that location. The backplate can sit inactive for months or years until a resident or property owner is ready to add a charger.
When the time comes, the installer slides the core charger unit onto the backplate. The charger reads the RFID tag using its internal NFC chip and automatically configures itself to the site. No extra setup, programming or networking steps are required.
This brings several advantages:
• Faster installation when residents request upgrades
• Lower initial infrastructure costs
• Uniform setup across the entire building
For property managers, this makes long-term planning far simpler. The site can start with basic infrastructure, then scale smoothly as more residents move to EVs.
Why NexBlue Works So Well in MDUs
• Smart load balancing across multiple layers
• Built-in resilience when networks fail
• Scalable hardware with NexBlue Ready
• Fair charging distribution between users
• Efficient use of the building’s electrical supply
NexBlue’s platform is engineered to grow with the site and operate reliably in the complex electrical environment of modern multi-dwelling units.
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