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The energy transition is accelerating the adoption of energy production and storage solutions that can operate autonomously, flexibly and intelligently. For users looking for partial or total independence from the grid, continuity of supply and optimization of costs, a photovoltaic system of Micro-Grid represents one of the most advanced and robust configurations available today.

A Micro-Grid of 30 kWh is based on the harmonious integration of premium technologies, each component contributing to the stability, efficiency and reliability of the system. The presented configuration combines the performance of LONGi panels, Fronius intelligent conversion, the power and flexibility of Victron Energy equipment and the autonomy of LiFePO₄ EcoSolaris batteries, resulting in a complete solution for residential, commercial or small industrial applications.

Energy production: the advantage of panels Bifacial LONGi

Photovoltaic panels LONGi Bifacial Monocrystalline 445 Wp form the production base of the system. The bifacial technology allows energy to be captured from both the main and the rear face, harnessing the light reflected from the surrounding surfaces. This translates into higher yield, more stable production throughout the day and better performance in variable lighting conditions.

Mounting the panels on a galvanized structure it gives the system mechanical durability, corrosion resistance and an extended life, being ideal for areas exposed to the elements. Together, these elements provide a constant supply of energy, the foundation on which the entire Micro-Grid is built.

AC/DC protections: the foundation of operational safety

In a modern Micro-Grid, managing energy flows is as important as producing it. For this, two well-defined protective structures are used.

Protection board for 4 photovoltaic strings integrates fuses, surge arresters and disconnectors, ensuring effective string and inverter protection. Each string is individually monitored and protected, which reduces risks and optimizes maintenance.

On the alternating current side, AC protection and automation panel manages consumers, internal circuits and network integration. The modular structure allows for easy expansion and adaptation to different operating scenarios, from autonomous operation to hybrid modes.

Energy conversion: inverter performance Fronius Symo 20.0-3-M

The three-phase inverter Fronius Symo 20.0-3-M it is the element responsible for converting solar energy into usable energy in AC circuits. Known for its high efficiency, excellent reliability and advanced monitoring, the Symo model is suitable for large residential and commercial applications.

By integrating the platform Fronius Datamanager, the user benefits from real-time viewing, diagnosis and remote configuration. In a Micro-Grid, the Fronius Symo functions as the main bridge between DC production and AC distribution, sending surplus energy to the storage system or feeding its own consumers.

Charging batteries: SmartSolar MPPT RS 450/200 Victron Energy [#$$#]

The charging process is managed by a high capacity controller — Victron SmartSolar MPPT RS 450/200. It withstands high input voltages, making it ideal for long strings and high production systems.

The advanced MPPT algorithm enables fast identification of the maximum power point, achieving high efficiency even in dynamic light conditions. Connectivity via Bluetooth and VE.Can facilitates seamless integration with Cerbo GX and enables configuration and monitoring via the VictronConnect app.

Strength and flexibility: 3 × Multiplus II 48V 5000VA Victron Energy

The heart of the system consists of three Victron Multiplus II 48V 5000VA units, mounted in parallel to provide increased power, redundancy and adaptability. This architecture allows:

• handling large loads and difficult starts,

• stable operation in off-grid mode,

• intelligent support for the grid (grid-assist),

• automatic backup in case of interruptions.

Multiplus II is recognized for its ability to handle transitions between sources without perceptible interruptions to consumers, which is essential for critical applications.

Control and monitoring: Cerbo GX Victron Energy and the sensor Ruvi

For a premium solution, visibility and control are indispensable. Victron Cerbo GX it connects all equipment in the Victron ecosystem — Multiplus, MPPT, batteries, sensors — and delivers a complete picture of the entire energy flow.

Through the platform Victron VRM, the user can track production, consumption, battery status, operation histories and possible alarms. Cerbo GX also allows remote adjustments, contributing to preventive maintenance and efficient operation.

The Ruuvi temperature sensor provides monitoring of environmental parameters, essential for sensitive areas such as the battery room. The transmitted data helps protect the components and maintain optimal performance in all conditions.

Advanced DC distribution: Lynx Power In și Lynx Distributor Victron Energy

The system Lynx provides a robust, modular and maintainable DC architecture.

Lynx Power In (M10) acts as a central entry point for direct current, optimizing cable routes and minimizing losses.

Lynx Distributor (M10) adds DC fuses for each branch and allows clear monitoring of the status of each connection. This structure is ideal for high power systems where clarity of distribution and protection are essential.

Energy storage: 2 × 14.33 kWh LiFePO₄ EcoSolaris batteries

With a total capacity of 28.66 kWh, the batteries LiFePO₄ EcoSolaris it offers significant autonomy and an exceptional level of safety. LiFePO₄ chemistry provides superior thermal stability, long cycle life (over 6000 cycles), stable discharge curves and high efficiency.

Natural compatibility with Victron equipment and efficient integration through the Lynx system enable balanced, reliable and predictable operation. For applications that require extended autonomy, EcoSolaris batteries are a central element of the Micro-Grid.

Un 30 kWh Micro-Grid photovoltaic system [#$$#]built on the basis of LONGi panels, Fronius technology, Victron Energy infrastructure and EcoSolaris batteries is a premium energy solution, suitable for users who seek independence, efficiency and safety. Modular architecture, dedicated protections and intelligent monitoring make this assembly a stable, scalable and future-ready solution.

By integrating state-of-the-art equipment, the Micro-Grid becomes more than just a PV system — it becomes an autonomous energy infrastructure capable of supporting critical consumers and optimizing resources in a smart, sustainable and sustainable way.