Add entity translations to Watttime (#99151)

homeassistant/components/watttime/sensor.py

@@ -36,14 +36,14 @@ SENSOR_TYPE_REALTIME_EMISSIONS_PERCENT = "percent"
 REALTIME_EMISSIONS_SENSOR_DESCRIPTIONS = (
     SensorEntityDescription(
         key=SENSOR_TYPE_REALTIME_EMISSIONS_MOER,
-        name="Marginal operating emissions rate",
+        translation_key="marginal_operating_emissions_rate",
         icon="mdi:blur",
         native_unit_of_measurement=f"{UnitOfMass.POUNDS} CO2/MWh",
         state_class=SensorStateClass.MEASUREMENT,
     ),
     SensorEntityDescription(
         key=SENSOR_TYPE_REALTIME_EMISSIONS_PERCENT,
-        name="Relative marginal emissions intensity",
+        translation_key="relative_marginal_emissions_intensity",
         icon="mdi:blur",
         native_unit_of_measurement=PERCENTAGE,
         state_class=SensorStateClass.MEASUREMENT,

homeassistant/components/watttime/strings.json

@@ -48,5 +48,15 @@
         }
       }
     }
+  },
+  "entity": {
+    "sensor": {
+      "marginal_operating_emissions_rate": {
+        "name": "Marginal operating emissions rate"
+      },
+      "relative_marginal_emissions_intensity": {
+        "name": "Relative marginal emissions intensity"
+      }
+    }
   }
 }