Fix serial number retrieval and add power (#124)

* Fix serial number retrieval and add power
measurement for Ahoy variant

Co-authored-by: c-graeser <>

* Fix indent; remove comment

Co-authored-by: c-graeser < >

dbus_service.py

@@ -277,7 +277,7 @@ def _get_serial(self, pvinverternumber):
         if self.dtuvariant == constants.DTUVARIANT_AHOY:
             if not meter_data["inverter"][pvinverternumber]["name"]:
                 raise ValueError("Response does not contain name")
-            serial = meter_data["inverter"][pvinverternumber]["name"]
+            serial = meter_data["inverter"][pvinverternumber]["serial"]
 
         elif self.dtuvariant == constants.DTUVARIANT_OPENDTU:
             if not meter_data["inverters"][pvinverternumber]["serial"]:
@@ -650,7 +650,10 @@ def set_dbus_values(self):
                 # the phase angles are 120 degrees apart
                 # sqrt(3) = 1.73205080757 <-- So we do not need to include Math Library
                 singlePhaseVoltage = voltage / 1.73205080757
-
+                if self.dtuvariant == constants.DTUVARIANT_AHOY:
+                    singlePhaseVoltage = voltage
+                    self._dbusservice["/Ac/Power"] = power
+
                 realCurrent = power / 3 / singlePhaseVoltage
 
                 self._dbusservice["/Ac/L1/Voltage"] = singlePhaseVoltage