diff --git a/libnymea/interfaces/evcharger.json b/libnymea/interfaces/evcharger.json
new file mode 100644
index 00000000..77179e60
--- /dev/null
+++ b/libnymea/interfaces/evcharger.json
@@ -0,0 +1,4 @@
+{
+    "description": "An EV-charger. Extends the power interface for charging/not charging an electric vehicle.",
+    "extends": "power"
+}
diff --git a/libnymea/interfaces/extendedevcharger.json b/libnymea/interfaces/extendedevcharger.json
new file mode 100644
index 00000000..b9282d05
--- /dev/null
+++ b/libnymea/interfaces/extendedevcharger.json
@@ -0,0 +1,13 @@
+{
+    "description": "An extended version of the EV-charger interface. Supports regulation of percentage in addition ot be powered on or off.",
+    "extends": "evcharger",
+    "states": [
+        {
+            "name": "percentage",
+            "type": "int",
+            "min": 0,
+            "max": 100,
+            "writable": true
+        }
+    ]
+}
diff --git a/libnymea/interfaces/extendedheating.json b/libnymea/interfaces/extendedheating.json
new file mode 100644
index 00000000..eaa5ee3d
--- /dev/null
+++ b/libnymea/interfaces/extendedheating.json
@@ -0,0 +1,13 @@
+{
+    "description": "The extendedheating interface defines heating appliances which can also be controlled with a percentage range. When implementing such a device class, do not set power to true when the percentage is set.",
+    "extends": "heating",
+    "states": [
+        {
+            "name": "percentage",
+            "type": "int",
+            "min": 0,
+            "max": 100,
+            "writable": true
+        }
+    ]
+}
diff --git a/libnymea/interfaces/heating.json b/libnymea/interfaces/heating.json
new file mode 100644
index 00000000..4f1c5764
--- /dev/null
+++ b/libnymea/interfaces/heating.json
@@ -0,0 +1,4 @@
+{
+    "description": "The heating interface defines basic heating appliances. They can be turned on or off.",
+    "extends": "power"
+}
diff --git a/libnymea/interfaces/interfaces.qrc b/libnymea/interfaces/interfaces.qrc
index 8dfdddec..bcf2a972 100644
--- a/libnymea/interfaces/interfaces.qrc
+++ b/libnymea/interfaces/interfaces.qrc
@@ -50,6 +50,10 @@
         <file>accesscontrol.json</file>
         <file>fingerprintreader.json</file>
         <file>useraccesscontrol.json</file>
+        <file>heating.json</file>
+        <file>extendedheating.json</file>
+        <file>evcharger.json</file>
+        <file>extendedevcharger.json</file>
     </qresource>
     <qresource prefix="/"/>
 </RCC>