# Shelly EM 1 weird returned power measured

**URL:** https://community.homey.app/t/shelly-em-1-weird-returned-power-measured/71305
**Category:** Devices
**Tags:** homey-pro
**Created:** [October 28, 2022, 8:30am UTC](https://community.homey.app/t/shelly-em-1-weird-returned-power-measured/71305 "2022-10-28T08:30:06Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Arnold\_vd\_Linden](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/arnold_vd_linden/32/19336_2.png) [@Arnold\_vd\_Linden](https://community.homey.app/u/Arnold_vd_Linden)
#### Post date: [October 28, 2022, 8:30am UTC](https://community.homey.app/t/shelly-em-1-weird-returned-power-measured/71305/1 "2022-10-28T08:30:06Z")

</div>

Hi,

I have a Shelly EM 1 to measure the power consumption of my airco.  
The airco is on a dedicated circuit breaker.  
Also I have solar panels that are also on a dedicated circuit breaker.  
See picture.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/6/d6276aff3584c27b08a60896943028780772b1f4.jpeg)

When the solar panels are producing a lot of energy I notice that the Shelly registers returned power around 5 watts. The same measurements are also in the Shelly app visible. So it’s not a Homey app issue.

Can some explain how this is possible?  
I know it’s not a dedicated Homey question, but I hope someone can help me.