I wanted to share my recent success in integrating my Shelly 3EM and Hoymiles inverter into Home Assistant for dynamic energy management. After some research and tinkering, I managed to set up a system where my balcony solar power plant automatically adjusts its output based on household consumption. Here’s how I did it:
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Setup: I installed the Shelly 3EM in my distribution board to monitor grid power consumption and connected my Hoymiles inverter via MQTT. Both devices are now integrated into Home Assistant, and their values are displayed on the energy dashboard.
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Automation: The key was creating an automation rule in Home Assistant. The rule checks if the solar power generation exceeds household consumption. If it does, the system dynamically reduces the inverter’s power output to minimize feedback to the grid.
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Challenges: Initially, I struggled with the automation logic, especially ensuring minimal feedback. After some trial and error, I realized that using MQTT to communicate between the devices was the most efficient approach. I also had to fine-tune the thresholds and response times to ensure smooth operation.
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Results: The system has been running smoothly for a week now, and I’ve noticed a significant reduction in grid feedback. This not only helps in optimizing energy use but also contributes to a more sustainable setup.
I’m really excited about this project and the potential it has for future enhancements. If anyone has similar setups or suggestions for improvement, I’d love to hear about them!