SMA Energy meter CT negative value for pv production

[5NineN]

Describe the bug

I add the SMA Energy meter CT in the evcc GUI (evcc version 3.000.4) for pv production, but the sign is wrong. Error message e.g. :"-529W is negative - check configuration if sign is correct"

Steps to reproduce

1. add "SMA Energy meter CT" in the GUI
2. choose "check" -> you see the negative value
3. click add
4. restart the server -> you get the error message and the pv production is ignored, because it's negative

Sorry, I can't check it with the nightly-build.

Configuration details

[site ] WARN 2026/01/22 13:19:12 pv 4 power: -717W is negative - check configuration if sign is correct 


db:4 {Type:template Title:BKW Icon: Product:SMA Energy Meter} map[host:192.168.0.37 template:sma-energy-meter usage:pv]

Log details

./.

What type of operating system or environment does evcc run on?

Linux

External automation

• I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

• I have verified that the issue is reproducible with the latest nightly build

Version

0.300.4

[5NineN]

Same problem with 0.300.5

[premultiply]

Looks like CTs are installed in wrong direction.
The are installed correct if production has negative sign on the meter.
evcc should display a positive value if usage: pv is selected in this case.