The BBWX-1 AC distribution box is a French-compatible solar grid-connected solution that automatically manages power between solar panels, battery storage, and the grid.

Overview and Functionality

The BBWX-1 distribution box is designed to integrate solar photovoltaic (PV) systems with battery energy storage and the French electricity grid. It automatically switches the power source between the grid, PV generation, and battery storage depending on real-time energy availability and consumption . During periods of high solar output, excess energy is stored in the battery system. When solar production is insufficient, the battery supplies power, and if both are low, the box draws electricity from the grid . This ensures continuous AC power for residential or commercial loads.

Key Features

• Automatic Source Switching: Seamlessly transitions between PV, battery, and grid power without manual intervention .
• Energy Storage Integration: Optimizes battery usage to store surplus solar energy and supply it when needed .
• Customizable AC Distribution: Can be tailored to different load requirements and system sizes .
• Grid Compliance: Designed to meet French grid standards, supporting safe injection of solar energy into the distribution network .

Grid Connection in France

Connecting a solar system to the French grid involves several steps:

1. Determine the Grid Operator: For connections up to 20 kV (HTA), Enedis handles distribution; higher voltages fall under RTE .
2. Permits and Certifications: Ground-mounted systems may require a permis de construire, and electrical safety certification from Consuel is mandatory .
3. Technical and Contractual Agreements: Developers must negotiate the PTF (Point de Livraison Technical Framework) with Enedis, which defines network works, cost allocation, and connection timelines .
4. Integration with Energy Storage: The distribution box ensures that energy flows comply with grid requirements while maximizing self-consumption and backup capabilities .

Benefits

• Reliable Power Supply: Maintains uninterrupted AC power for critical loads.
• Optimized Solar Utilization: Reduces grid dependency by storing excess solar energy.
• Regulatory Compliance: Supports safe and efficient grid injection in line with French energy law and Enedis requirements .
• Scalability: Suitable for residential, commercial, and small industrial solar installations. In summary, the BBWX-1 AC distribution box provides a fully automated, grid-compliant solution for managing solar PV and battery storage in France, ensuring efficient energy use, backup power, and seamless integration with the national electricity grid .