Integrating PV System with Smart Home Controller

I’ve been exploring the integration of my photovoltaic (PV) system with my existing smart home setup, and I wanted to share my journey and findings with the community.

For years, I’ve relied on a CCU3 (previously CCU2) system to manage various aspects of my home, including infrared panels controlled via wall thermostats. Now, with the installation of a 5kW PV system on my facade, I’m looking to take my home automation to the next level. The goal is to adjust the temperature of my infrared panels based on the real-time power output of my PV system.

Here’s what I envision: if the PV system is producing 2kW, two panels would adjust to 24°C, and if it’s generating 4kW, four panels would follow suit. This dynamic adjustment would not only optimize energy usage but also provide a seamless integration between my renewable energy source and my heating system.

Challenges and Solutions

  1. Data Integration: The first hurdle was figuring out how to feed the PV system’s power data into the CCU3. After some research, I discovered that most modern PV inverters support data output via Modbus or HTTP APIs. This means I can potentially connect the inverter to my CCU3 either directly or through a middleware like Home Assistant.

  2. Automation Rules: Once the data is integrated, setting up automation rules within the CCU3 is the next step. I plan to use the PV power output as a variable to dictate the temperature settings of the infrared panels. This would involve creating conditional statements that adjust the panel temperatures based on the current power generation.

  3. Testing and Fine-Tuning: I’m aware that this setup will require thorough testing to ensure reliability. I’ll start by simulating different power outputs to see how the system responds. Adjustments might be needed in the automation rules to handle unexpected fluctuations in PV output.

Community Input
Has anyone in the community attempted a similar integration? I’d love to hear about your experiences, challenges, and solutions. Specifically, I’m curious about how others have successfully integrated PV data into their smart home controllers. Any insights or recommendations would be invaluable as I move forward with this project.

Thank you for your time and consideration. Let’s continue to innovate and optimize our smart homes together!