How to integrate the Shelly Pro 3 EM with MQTT and Smart Home?

The Shelly Pro 3 EM can be seamlessly integrated into smart home systems like Home Assistant or ioBroker via MQTT. Through MQTT topics, the device transmits precise data on power consumption, voltage, and power in real time. This integration enables dynamic load management, intelligent storage control, and optimized energy distribution, especially in conjunction with DRBO Greenenergy solutions such as SunLit storage systems.

What is MQTT and why is it suitable for the Shelly Pro 3 EM?

MQTT (Message Queuing Telemetry Transport) is a lightweight communication protocol for IoT and smart home devices. It transmits data quickly and reliably between Shelly Pro 3 EM and platforms like Home Assistant, Node-RED, or OpenHAB. This allows real-time monitoring and automation of power consumption, PV output, and grid feedback.

How to activate MQTT on the Shelly Pro 3 EM?

1. Open the Shelly Web Interface

2. Navigate to Internet & Security → MQTT

3. Enable "Enable MQTT"

4. Enter broker address, port, username, and password

5. Optional: Define topic structure (<device-name>/status)

After configuration, the Shelly Pro 3 EM sends data periodically to the MQTT broker.

Which MQTT topics does the Shelly Pro 3 EM send?

The Shelly Pro 3 EM transmits data on voltage, current, power, energy, and frequency for each phase (L1, L2, L3). These can be integrated directly into smart home systems.

This information enables automations such as charging logics for SunLit storage systems from DRBO Greenenergy or automatic shutdowns during peak loads.

How to integrate the Shelly Pro 3 EM into Home Assistant?

Home Assistant automatically detects Shelly devices via MQTT as soon as the broker has been added. Entities are created for each phase, graphically displaying consumption, generation, and grid feed-in.

What are the advantages of MQTT integration?

• Real-time monitoring: Readings accurate to the second

• Automation: Load management and PV surplus utilization

• Interoperability: Compatible with many smart home systems

• Efficiency: Minimal data traffic, ideal for LAN/WLAN

DRBO Greenenergy uses MQTT in its SunLit energy management systems to intelligently charge storage units and reduce grid consumption.

How do I connect the Shelly Pro 3 EM to Node-RED or ioBroker?

1. Enter broker in Node-RED or ioBroker

2. Subscribe to desired Shelly topics

3. Create flows or scripts for energy analysis, warning messages, or control commands

This allows for automation of battery prioritization, solar power utilization, and load shifting.

DRBO Greenenergy Expert Opinions

"The combination of Shelly Pro 3 EM and MQTT opens up completely new possibilities for intelligent energy management."
– DRBO Greenenergy Technical Team
Through precise data integration, solar power can be distributed specifically between household, storage, and grid. With SunLit storage solutions from DRBO Greenenergy, customers can increase energy self-sufficiency, reduce costs, and intelligently manage grid loads – a decisive step towards a decentralized energy transition.

Which automations are particularly useful?

• Surplus operation: Excess PV power charges storage or e-vehicles

• Load management: Non-essential devices pause during peak grid loads

• Notifications: Alarm in case of anomalies or power failure

• Time-based control: Utilizing off-peak electricity tariffs for recharging

When integrated with DRBO Greenenergy, control is automatically handled by the SunLit platform.

What network and security precautions are necessary?

1. LAN for stable data transfer

2. Protect MQTT broker with username & password

3. Optional: Activate TLS encryption (Port 8883)

4. Use separate VLANs for IoT devices

This ensures the energy system remains secure from unauthorized access.

What data can be combined?

MQTT data can be combined with other sensors (temperature, state of charge, grid frequency). This creates precise automations for PV yield forecasting and consumption optimization in conjunction with SunLit storage solutions from DRBO Greenenergy.

Conclusion

The integration of the Shelly Pro 3 EM with MQTT enables efficient, automated energy management. It provides transparency, control, and optimization for any smart home or solar system. In combination with DRBO Greenenergy and the SunLit systems, energy can be used intelligently, sustainably, and future-proof.

Frequently Asked Questions (FAQs)

1. Does MQTT require internet access?
No, MQTT can be operated locally within the home network.

2. Can the Shelly Pro 3 EM detect bidirectional energy flows?
Yes, it shows consumption and feed-in through positive and negative values.

3. Is Home Assistant required?
No, any system with MQTT support can be used.

4. Should LAN or WLAN be used?
LAN is more stable; WLAN works reliably in a home environment.

5. Does MQTT work with DRBO Greenenergy storage systems?
Yes, especially with SunLit energy management systems for charging optimizations.

Some of the information in this article is from the internet. Product specifications may be updated at any time. For the latest information, please visit the official website or product page.