diff --git a/VectoCore/VectoCore/InputData/FileIO/JSON/JSONElectricMotor.cs b/VectoCore/VectoCore/InputData/FileIO/JSON/JSONElectricMotor.cs
index f7625aa0ce9ab01893a6f950c209d2fbddd89ec7..8b7bca92608930057345eca936436396d7574ccc 100644
--- a/VectoCore/VectoCore/InputData/FileIO/JSON/JSONElectricMotor.cs
+++ b/VectoCore/VectoCore/InputData/FileIO/JSON/JSONElectricMotor.cs
@@ -223,7 +223,7 @@ namespace TUGraz.VectoCore.InputData.FileIO.JSON
 			? Body.GetEx<string>(JsonKeys.EM_ElectricMachineType).ParseEnum<ElectricMachineType>()
 			: ElectricMachineType.PSM;
 
-		public Watt R85RatedPower => Body.ContainsKey(JsonKeys.EM_RatedPower) ? Body.GetEx<double>(JsonKeys.EM_RatedPower).SI<Watt>() : 0.SI<Watt>();
+		public Watt R85RatedPower => Body.ContainsKey(JsonKeys.EM_RatedPower) ? Body.GetEx<double>(JsonKeys.EM_RatedPower).SI(Unit.SI.Kilo.Watt).Cast<Watt>() : 0.SI<Watt>();
 		public virtual KilogramSquareMeter Inertia => Body.GetEx<double>("Inertia").SI<KilogramSquareMeter>();
 
 		//public virtual Joule OverloadBuffer => Body.GetValueOrDefault<double>("ThermalOverloadBuffer")?.SI(Unit.SI.Mega.Joule).Cast<Joule>() ?? 1e18.SI<Joule>();
diff --git a/VectoCore/VectoCore/InputData/FileIO/JSON/JSONIEPCData.cs b/VectoCore/VectoCore/InputData/FileIO/JSON/JSONIEPCData.cs
index aa4aaf14977749556743e51197af40fe2d8530f9..e9efb2011ee464b3ffee079d9aa579a0dd92d650 100644
--- a/VectoCore/VectoCore/InputData/FileIO/JSON/JSONIEPCData.cs
+++ b/VectoCore/VectoCore/InputData/FileIO/JSON/JSONIEPCData.cs
@@ -46,7 +46,7 @@ namespace TUGraz.VectoCore.InputData.FileIO.JSON
 			? Body.GetEx<string>(JsonKeys.EM_ElectricMachineType).ParseEnum<ElectricMachineType>()
 			: ElectricMachineType.PSM;
 
-		public Watt R85RatedPower => Body.ContainsKey(JsonKeys.EM_RatedPower) ? Body.GetEx<double>(JsonKeys.EM_RatedPower).SI<Watt>() : 0.SI<Watt>();
+		public Watt R85RatedPower => Body.ContainsKey(JsonKeys.EM_RatedPower) ? Body.GetEx<double>(JsonKeys.EM_RatedPower).SI(Unit.SI.Kilo.Watt).Cast<Watt>() : 0.SI<Watt>();
 		public KilogramSquareMeter Inertia => Body.GetEx<double>(JsonKeys.IEPC_Inertia).SI<KilogramSquareMeter>();
 		public bool DifferentialIncluded => Body.GetEx<bool>(JsonKeys.IEPC_DifferentialIncluded);
 		public bool DesignTypeWheelMotor => Body.GetEx<bool>(JsonKeys.IEPC_DesignTypeWheelMotor);
diff --git a/VectoCore/VectoCore/OutputData/FileIO/JSONFileWriter.cs b/VectoCore/VectoCore/OutputData/FileIO/JSONFileWriter.cs
index a6ff4d3c0e40f7b3e0a4087841e96111eb4f159c..7faf3d6091895ff4adc1e606d18c06b52caba182 100644
--- a/VectoCore/VectoCore/OutputData/FileIO/JSONFileWriter.cs
+++ b/VectoCore/VectoCore/OutputData/FileIO/JSONFileWriter.cs
@@ -94,7 +94,7 @@ public class JSONFileWriter : IOutputFileWriter
 			{ JsonKeys.Engine_Inertia, electricMachine.Inertia.Value() },
 			{ JsonKeys.EM_ElectricMachineType, electricMachine.ElectricMachineType.ToString() },
 			{ JsonKeys.EM_ThermalOverloadRecoveryFactor, electricMachine.OverloadRecoveryFactor },
-			{ JsonKeys.EM_RatedPower, electricMachine.R85RatedPower.Value() }
+			{ JsonKeys.EM_RatedPower, electricMachine.R85RatedPower.ConvertToKiloWatt().Value }
 		};
 
 		var vlevels = GetVoltageLevelEntries(electricMachine.VoltageLevels, filename);
@@ -114,7 +114,7 @@ public class JSONFileWriter : IOutputFileWriter
 			{ JsonKeys.EM_DragCurve,  GetRelativePath(electricMachine.DragCurve.Source, Path.GetDirectoryName(filename))},
 			{ JsonKeys.Engine_Inertia, electricMachine.Inertia.Value() },
 			{ JsonKeys.EM_ThermalOverloadRecoveryFactor, electricMachine.OverloadRecoveryFactor },
-			{ JsonKeys.EM_RatedPower, electricMachine.R85RatedPower.Value().ToGUIFormat() }
+			{ JsonKeys.EM_RatedPower, electricMachine.R85RatedPower.ConvertToKiloWatt().Value }
 
 		};
 		
@@ -164,7 +164,7 @@ public class JSONFileWriter : IOutputFileWriter
 			{JsonKeys.IEPC_DesignTypeWheelMotor, iepc.DesignTypeWheelMotor},
 			{JsonKeys.IEPC_NrOfDesignTypeWheelMotorMeasured, iepc.NrOfDesignTypeWheelMotorMeasured},
 			{JsonKeys.IEPC_ThermalOverloadRecoveryFactor, iepc.OverloadRecoveryFactor},
-			{ JsonKeys.EM_RatedPower, iepc.R85RatedPower.Value().ToGUIFormat() }
+			{ JsonKeys.EM_RatedPower, iepc.R85RatedPower.ConvertToKiloWatt().Value }
 		};
 
 		var gears = new List<Dictionary<string, object>>();