diff --git a/homeassistant/components/number/__init__.py b/homeassistant/components/number/__init__.py
index 5f4aefd8bf1..6e5168f3714 100644
--- a/homeassistant/components/number/__init__.py
+++ b/homeassistant/components/number/__init__.py
@@ -143,6 +143,14 @@ class NumberDeviceClass(StrEnum):
     Unit of measurement: `lx`, `lm`
     """
 
+    IRRADIANCE = "irradiance"
+    """Irradiance.
+
+    Unit of measurement:
+    - SI / metric: `W/m²`
+    - USCS / imperial: `BTU/(h⋅ft²)`
+    """
+
     MOISTURE = "moisture"
     """Moisture.
 
diff --git a/homeassistant/components/sensor/__init__.py b/homeassistant/components/sensor/__init__.py
index 31d759136a2..a3cbc8a93ae 100644
--- a/homeassistant/components/sensor/__init__.py
+++ b/homeassistant/components/sensor/__init__.py
@@ -207,6 +207,14 @@ class SensorDeviceClass(StrEnum):
     Unit of measurement: `lx`, `lm`
     """
 
+    IRRADIANCE = "irradiance"
+    """Irradiance.
+
+    Unit of measurement:
+    - SI / metric: `W/m²`
+    - USCS / imperial: `BTU/(h⋅ft²)`
+    """
+
     MOISTURE = "moisture"
     """Moisture.
 
diff --git a/homeassistant/components/sensor/device_condition.py b/homeassistant/components/sensor/device_condition.py
index 44a81f94969..18f42d7c658 100644
--- a/homeassistant/components/sensor/device_condition.py
+++ b/homeassistant/components/sensor/device_condition.py
@@ -44,6 +44,7 @@ CONF_IS_FREQUENCY = "is_frequency"
 CONF_IS_HUMIDITY = "is_humidity"
 CONF_IS_GAS = "is_gas"
 CONF_IS_ILLUMINANCE = "is_illuminance"
+CONF_IS_IRRADIANCE = "is_irradiance"
 CONF_IS_MOISTURE = "is_moisture"
 CONF_IS_NITROGEN_DIOXIDE = "is_nitrogen_dioxide"
 CONF_IS_NITROGEN_MONOXIDE = "is_nitrogen_monoxide"
@@ -84,6 +85,7 @@ ENTITY_CONDITIONS = {
     SensorDeviceClass.GAS: [{CONF_TYPE: CONF_IS_GAS}],
     SensorDeviceClass.HUMIDITY: [{CONF_TYPE: CONF_IS_HUMIDITY}],
     SensorDeviceClass.ILLUMINANCE: [{CONF_TYPE: CONF_IS_ILLUMINANCE}],
+    SensorDeviceClass.IRRADIANCE: [{CONF_TYPE: CONF_IS_IRRADIANCE}],
     SensorDeviceClass.MOISTURE: [{CONF_TYPE: CONF_IS_MOISTURE}],
     SensorDeviceClass.NITROGEN_DIOXIDE: [{CONF_TYPE: CONF_IS_NITROGEN_DIOXIDE}],
     SensorDeviceClass.NITROGEN_MONOXIDE: [{CONF_TYPE: CONF_IS_NITROGEN_MONOXIDE}],
@@ -134,6 +136,7 @@ CONDITION_SCHEMA = vol.All(
                     CONF_IS_GAS,
                     CONF_IS_HUMIDITY,
                     CONF_IS_ILLUMINANCE,
+                    CONF_IS_IRRADIANCE,
                     CONF_IS_MOISTURE,
                     CONF_IS_NITROGEN_DIOXIDE,
                     CONF_IS_NITROGEN_MONOXIDE,
diff --git a/homeassistant/components/sensor/device_trigger.py b/homeassistant/components/sensor/device_trigger.py
index 30b7a66cd05..cdfe0156924 100644
--- a/homeassistant/components/sensor/device_trigger.py
+++ b/homeassistant/components/sensor/device_trigger.py
@@ -43,6 +43,7 @@ CONF_FREQUENCY = "frequency"
 CONF_GAS = "gas"
 CONF_HUMIDITY = "humidity"
 CONF_ILLUMINANCE = "illuminance"
+CONF_IRRADIANCE = "irradiance"
 CONF_MOISTURE = "moisture"
 CONF_NITROGEN_DIOXIDE = "nitrogen_dioxide"
 CONF_NITROGEN_MONOXIDE = "nitrogen_monoxide"
@@ -83,6 +84,7 @@ ENTITY_TRIGGERS = {
     SensorDeviceClass.GAS: [{CONF_TYPE: CONF_GAS}],
     SensorDeviceClass.HUMIDITY: [{CONF_TYPE: CONF_HUMIDITY}],
     SensorDeviceClass.ILLUMINANCE: [{CONF_TYPE: CONF_ILLUMINANCE}],
+    SensorDeviceClass.IRRADIANCE: [{CONF_TYPE: CONF_IRRADIANCE}],
     SensorDeviceClass.MOISTURE: [{CONF_TYPE: CONF_MOISTURE}],
     SensorDeviceClass.NITROGEN_DIOXIDE: [{CONF_TYPE: CONF_NITROGEN_DIOXIDE}],
     SensorDeviceClass.NITROGEN_MONOXIDE: [{CONF_TYPE: CONF_NITROGEN_MONOXIDE}],
@@ -134,6 +136,7 @@ TRIGGER_SCHEMA = vol.All(
                     CONF_GAS,
                     CONF_HUMIDITY,
                     CONF_ILLUMINANCE,
+                    CONF_IRRADIANCE,
                     CONF_MOISTURE,
                     CONF_NITROGEN_DIOXIDE,
                     CONF_NITROGEN_MONOXIDE,
diff --git a/homeassistant/components/sensor/strings.json b/homeassistant/components/sensor/strings.json
index 4b1b9456901..006eecc9f24 100644
--- a/homeassistant/components/sensor/strings.json
+++ b/homeassistant/components/sensor/strings.json
@@ -15,6 +15,7 @@
       "is_gas": "Current {entity_name} gas",
       "is_humidity": "Current {entity_name} humidity",
       "is_illuminance": "Current {entity_name} illuminance",
+      "is_irradiance": "Current {entity_name} irradiance",
       "is_moisture": "Current {entity_name} moisture",
       "is_nitrogen_dioxide": "Current {entity_name} nitrogen dioxide concentration level",
       "is_nitrogen_monoxide": "Current {entity_name} nitrogen monoxide concentration level",
@@ -51,6 +52,7 @@
       "gas": "{entity_name} gas changes",
       "humidity": "{entity_name} humidity changes",
       "illuminance": "{entity_name} illuminance changes",
+      "irradiance": "{entity_name} irradiance changes",
       "moisture": "{entity_name} moisture changes",
       "nitrogen_dioxide": "{entity_name} nitrogen dioxide concentration changes",
       "nitrogen_monoxide": "{entity_name} nitrogen monoxide concentration changes",
diff --git a/homeassistant/components/sensor/translations/en.json b/homeassistant/components/sensor/translations/en.json
index c243f793ff4..ee89391dbba 100644
--- a/homeassistant/components/sensor/translations/en.json
+++ b/homeassistant/components/sensor/translations/en.json
@@ -14,6 +14,7 @@
             "is_gas": "Current {entity_name} gas",
             "is_humidity": "Current {entity_name} humidity",
             "is_illuminance": "Current {entity_name} illuminance",
+            "is_irradiance": "Current {entity_name} irradiance",
             "is_moisture": "Current {entity_name} moisture",
             "is_nitrogen_dioxide": "Current {entity_name} nitrogen dioxide concentration level",
             "is_nitrogen_monoxide": "Current {entity_name} nitrogen monoxide concentration level",
@@ -51,6 +52,7 @@
             "gas": "{entity_name} gas changes",
             "humidity": "{entity_name} humidity changes",
             "illuminance": "{entity_name} illuminance changes",
+            "irradiance": "{entity_name} irradiance changes",
             "moisture": "{entity_name} moisture changes",
             "nitrogen_dioxide": "{entity_name} nitrogen dioxide concentration changes",
             "nitrogen_monoxide": "{entity_name} nitrogen monoxide concentration changes",