I’ve been using the Shelly EM Gen 3 for monitoring both my house grid power and solar power. It’s a fantastic device, but I noticed an issue with the solar power clamp—it never hits zero. Instead, it shows around 6W even at night, which doesn’t make sense. After some research, I found that this might be due to calibration or sensitivity settings. Here’s what I did to address it:
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Calibration Check: I reviewed the calibration settings in the Shelly app. It turns out the device was set to a higher sensitivity, which might have caused the slight readings even when no power was being generated. Lowering the sensitivity helped reduce the noise.
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Custom Threshold: I set up a custom threshold in my home automation system. If the readings are below 10W, the system assumes it’s zero. This adjustment has significantly improved the accuracy of my solar power monitoring without affecting the overall stats and automations.
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Firmware Update: I also ensured that the device was running the latest firmware. Sometimes, bugs in the firmware can cause unexpected behavior, and an update might resolve the issue.
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Placement Consideration: I double-checked the placement of the clamps to ensure they were correctly aligned and free from any interference that might cause erroneous readings.
If you’re experiencing similar issues, I recommend trying these steps. It’s all about fine-tuning the settings to match your specific setup. Happy monitoring! 