For a client stepping into retirement at their spacious seafront property, we crafted a sophisticated, phased energy solution that could grow with their evolving needs. Spanning seven stages, this project showcases the impressive modularity and versatility of the Victron product range. Starting with a 5kVA inverter and 5kWh battery backup, the system expanded into a powerful 10kVA inverter with 20kWh of battery storage and a robust 11kWp PV array of 26 panels.

To optimize efficiency, we designed the system with both AC-coupled and DC-coupled configurations: AC coupling ensures maximum efficiency in delivering power to household loads, while DC coupling optimizes battery charging, making the entire setup remarkably energy-efficient and effective.

We also incorporated an EV charger to enhance the client’s green lifestyle. Leveraging the 3-phase grid supply, we configured it for flexible charging options—fast-charging up to 22kW on 3-phase or regular charging at 8kW on single-phase. The Victron EV charger further integrates with the Energy Storage System (ESS), allowing it to draw only from excess PV power once batteries are fully charged and all loads are met. This advanced, adaptable setup allows our client to enjoy a sustainable and luxurious coastal lifestyle with uninterrupted, efficient energy.

• 2x MultiPlusII 48/5000/70
• 2x FreedomWon 10/8
• 1x Fronius 8.2kW with 11x405W panels West (Tracker1) and 11x 415W panels East (Tracker2)
• 1x SmartSolar MPPT 150/35 with 4x 530W panels (East)
• Cerbo GX with GX Touch
• Lynx Power In DC busbar
• ET340 Energy Meter

Assistants:

• ESS activated - currenlty DoD on 20%
• Programmable relay - We are using the aux contactor (continuity relay with 230V from Grid) on MPII (Master unit) to open and close on high (99%) and low (70%) of battery SoC. The signal is used on AC contactors with delay timers to move additional loads from L2 and L3 to L1 (on INPUT of inverter). This allows us to use additional PV on heavy loads of the underfloor heating.
• Aux Relay - triggers a 12V light in the scullery indicating when it is load shedding;