diff --git a/docs/entity_sensor.md b/docs/entity_sensor.md
index 2eb7579f..ca4ed4e0 100644
--- a/docs/entity_sensor.md
+++ b/docs/entity_sensor.md
@@ -25,5 +25,6 @@ If specifying a device class, your sensor entity will need to also return the co
 | humidity | % | % of humidity in the air.
 | illuminance | lx/lm | Light level.
 | temperature | °C/°F | Temperature.
-| timestamp | ISO8601 | Timestamp
+| timestamp | ISO8601 | Timestamp.
+| power | W,kW | Power.
 | pressure | hPa,mbar | Pressure.