Rooftop Solar for Homes & Communities

In recent years, residential rooftop solar systems have been rapidly adopted across Europe, North America, and other global markets. Driven by rising electricity prices, carbon reduction goals, and the pursuit of energy independence, homeowners are increasingly investing in solar PV combined with energy storage systems.

In a typical self-consumption with surplus export scenario, accurate energy measurement, grid compliance, and power flow control become essential. Issues such as reverse power flow, energy optimization, and system visibility directly affect grid stability, utility compliance, and financial returns.

This is where reliable, intelligent metering plays a critical role.

ADL400-W Smart Meter for Residential Solar & Storage Systems

The Acrel ADL400-W series is a dual-channel, external CT, wireless energy meter specifically designed for:

• Residential rooftop PV systems
• Micro-inverter applications
• Battery energy storage systems (BESS)
• AC-coupled solar solutions
• Community and small commercial distributed energy systems

With high accuracy, compact design, fast response, and easy installation, ADL400-W provides precise monitoring of real-time electrical parameters and bidirectional energy flows.

It supports Modbus-TCP and HTTP protocols, and communicates via Wi-Fi, LoRa, or RS485, enabling seamless integration with inverters or Energy Management Systems (EMS).

Smart Energy Control for Modern Solar Homes

By integrating ADL400-W into residential PV systems, users and system operators can achieve advanced energy control functions:

• Bidirectional energy metering
  Measures PV generation, household consumption, and exported energy to the grid
• Anti-reverse power control
  Prevents unwanted power export to comply with local grid regulations
• Dynamic power regulation
  Adjusts PV output based on real-time load demand
• Battery charge & discharge management
  Coordinates with storage systems to optimize energy usage
• Remote monitoring & data access
  Enables real-time data collection and analysis through EMS or cloud platforms

This makes ADL400-W an essential component for residential solar energy optimization.

Compact, Reliable & Designed for Harsh Environments

Residential and community energy systems often face challenging installation environments. The ADL400-W / ADL200-W series is engineered for long-term reliability:

• Compact DIN-rail design
  Easy installation inside distribution boards or control cabinets
• High accuracy & fast response
  Class 0.5 accuracy with a response time as fast as 50 ms
• Enhanced electrical safety
  AC 3 kV insulation, UL94-V0 flame-retardant materials, IP51 protection
• Wide operating temperature range
  Stable operation from −25 °C to +55 °C, suitable for extreme climates

Enabling Digital Energy Management for Residential Solar

As residential energy systems evolve toward solar + storage + smart energy management, homes and communities are becoming more intelligent, data-driven, and flexible.

The ADL400-W is more than an energy meter — it acts as a core data node connecting PV systems, batteries, and energy management platforms. It enables:

• Real-time balance between energy generation and consumption
• Centralized management of multiple residential PV systems
• Improved grid interaction and load scheduling
• Long-term sustainable and compliant operation of community solar projects

Conclusion

With high-precision metering, intelligent communication, and advanced power flow control, the Acrel ADL400-W series serves as a smart energy manager for residential rooftop solar systems.

By making every kilowatt-hour visible, traceable, and optimizable, ADL400-W empowers homeowners, installers, and energy operators to maximize solar value — supporting a cleaner, smarter, and more resilient energy future.