diff --git a/packages/modules/devices/sungrow/sungrow/device.py b/packages/modules/devices/sungrow/sungrow/device.py
index b9becf32a5..69e5ed1e3a 100644
--- a/packages/modules/devices/sungrow/sungrow/device.py
+++ b/packages/modules/devices/sungrow/sungrow/device.py
@@ -29,6 +29,7 @@ def create_inverter_component(component_config: SungrowInverterSetup):
         return SungrowInverter(component_config, device_config=device_config, client=client)
 
     def update_components(components: Iterable[Union[SungrowBat, SungrowCounter, SungrowInverter]]):
+        pv_power = 0
         nonlocal client
         with client:
             for component in components: