diff --git a/homeassistant/components/rehlko/sensor.py b/homeassistant/components/rehlko/sensor.py
index d19e37d648a..9186f0e0c9f 100644
--- a/homeassistant/components/rehlko/sensor.py
+++ b/homeassistant/components/rehlko/sensor.py
@@ -179,7 +179,6 @@ SENSORS: tuple[RehlkoSensorEntityDescription, ...] = (
     ),
     RehlkoSensorEntityDescription(
         key="powerSource",
-        icon="mdi:home-lightning-bolt",
         translation_key="power_source",
     ),
 )
diff --git a/tests/components/rehlko/snapshots/test_sensor.ambr b/tests/components/rehlko/snapshots/test_sensor.ambr
index c6cab36ba21..3973996ba80 100644
--- a/tests/components/rehlko/snapshots/test_sensor.ambr
+++ b/tests/components/rehlko/snapshots/test_sensor.ambr
@@ -685,7 +685,7 @@
     'options': dict({
     }),
     'original_device_class': None,
-    'original_icon': 'mdi:home-lightning-bolt',
+    'original_icon': None,
     'original_name': 'Power source',
     'platform': 'rehlko',
     'previous_unique_id': None,
@@ -699,7 +699,6 @@
   StateSnapshot({
     'attributes': ReadOnlyDict({
       'friendly_name': 'Generator 1 Power source',
-      'icon': 'mdi:home-lightning-bolt',
     }),
     'context': <ANY>,
     'entity_id': 'sensor.generator_1_power_source',