diff --git a/apps/meters_to_ha/meters_to_ha.py b/apps/meters_to_ha/meters_to_ha.py
index cc48996..58f6be9 100755
--- a/apps/meters_to_ha/meters_to_ha.py
+++ b/apps/meters_to_ha/meters_to_ha.py
@@ -1899,8 +1899,7 @@ def get_gazpar_file(self):
             )
 
             # Next line would log without hiding data
-            # self.mylog(r"Get Data URL {}".format(data_url), end="~~")
-
+            # self.mylog(r"Get Data URL {}".format(data_url), end="~~")           
             # Go to the URL.
             dl_starttime = time.time()
             self.__browser.get(data_url)
@@ -2905,7 +2904,68 @@ def update_veolia_device(self, csv_file):
             )
 
     def update_grdf_device(self, json_file):
-        pass
+        # pylint:disable=import-outside-toplevel
+        data = ""
+        import paho.mqtt.client as mqtt
+        from paho.mqtt import publish
+
+        #data = self.veolia_to_dict(json_file)
+        with open(json_file, encoding="utf_8") as f:
+            data = json.load(f)
+       
+        if len(data) > 0:
+          pce = list(data.keys())[0]
+          data = data[pce]["releves"][-1]
+          self.mylog(f"MQTT GRDF data: {data}")
+        else:
+          self.mylog(f"MQTT GRDF data: file empty")
+          pass
+
+        if data is not None:
+            state_topic = f"grdf/{pce}/last_data"
+            mqtt_server = self.configuration[PARAM_MQTT_SERVER]
+            mqtt_port = int(self.configuration[PARAM_MQTT_PORT])
+            mqtt_login = self.configuration[PARAM_MQTT_LOGIN]
+            mqtt_password = self.configuration[PARAM_MQTT_PASSWORD]
+            auth = {"username": mqtt_login, "password": mqtt_password}
+            # tls_dict= {'ca_certs':"<ca_certs>", 'certfile':"<certfile>",
+            #            'keyfile':"<keyfile>", 'tls_version':"<tls_version>",
+            #            'ciphers':"<ciphers">}
+            tls_dict = None
+            # will =  {'topic': "<topic>", 'payload':"<payload">,
+            #          'qos':<qos>, 'retain':<retain>}
+
+            self.mylog(
+                f"MQTT GRDF Publish {mqtt_server}:{mqtt_port} {auth} {data!r}"
+            )
+            data_out: dict[str, Any] = {}
+            data_out = {
+              "datetime_period_start": data.get("dateDebutReleve",None),
+              "datetime_period_end": data.get("dateFinReleve", None),
+              "date_period_start": data.get("journeeGaziere", None),
+              "index_period_start_m3": data.get("indexDebut", None),
+              "index_period_end_m3": data.get("indexFin", None),
+              "volume_period_m3": data.get("volumeBrutConsomme", None),
+              "energy_period_kWh": data.get("energieConsomme", None),
+              "conversion_coefficient": data.get("coeffConversion", None),
+              "status": data.get("status", None) 
+              }  
+
+            publish.single(
+                state_topic,
+                payload=json.dumps(data_out),
+                qos=0,
+                retain=True,  # Retain this data as a state
+                hostname=mqtt_server,
+                port=mqtt_port,
+                # will=will,
+                auth=auth,
+                keepalive=60,
+                client_id="",
+                tls=tls_dict,
+                protocol=mqtt.MQTTv311,
+                transport="tcp",
+            )
 
     def cleanup(self, keep_output=False):
         pass