diff --git a/SmartTeslaAmpSetter.Tests/Services/GridService.cs b/SmartTeslaAmpSetter.Tests/Services/GridService.cs
new file mode 100644
index 000000000..f019e85a7
--- /dev/null
+++ b/SmartTeslaAmpSetter.Tests/Services/GridService.cs
@@ -0,0 +1,26 @@
+using Xunit;
+using Xunit.Abstractions;
+
+namespace SmartTeslaAmpSetter.Tests.Services;
+
+public class GridService : TestBase
+{
+    public GridService(ITestOutputHelper outputHelper)
+        : base(outputHelper)
+    {
+    }
+
+    [Theory]
+    [InlineData("384.8746")]
+    [InlineData("384")]
+    [InlineData("384.0")]
+    [InlineData("384.147")]
+    public void Can_extract_Integers_From_String(string value)
+    {
+        var gridService = Mock.Create<Server.Services.GridService>();
+        var intValue = gridService.GetIntegerFromString(value);
+
+        Assert.Equal(384, intValue);
+    }
+
+}
\ No newline at end of file
diff --git a/SmartTeslaAmpSetter/Server/Services/GridService.cs b/SmartTeslaAmpSetter/Server/Services/GridService.cs
index 2bfe2bdf6..b94ac379f 100644
--- a/SmartTeslaAmpSetter/Server/Services/GridService.cs
+++ b/SmartTeslaAmpSetter/Server/Services/GridService.cs
@@ -1,4 +1,5 @@
-using Newtonsoft.Json.Linq;
+using System.Globalization;
+using Newtonsoft.Json.Linq;
 using SmartTeslaAmpSetter.Server.Contracts;
 
 namespace SmartTeslaAmpSetter.Server.Services;
@@ -43,16 +44,26 @@ public async Task<int> GetCurrentOverage()
                       throw new InvalidOperationException("Extracted Json Value is null")).Value<string>();
         }
 
-        if (int.TryParse(result, out var overage))
+        try
         {
+            var overage = GetIntegerFromString(result);
             if (_configuration.GetValue<bool>("CurrentPowerToGridInvertValue"))
             {
                 overage = -overage;
             }
-            return overage;
+            return overage ;
         }
+        catch (Exception)
+        {
+            throw new InvalidCastException($"Could not parse result {result} from uri {requestUri} to integer");
+        }
+
+    }
 
-        throw new InvalidCastException($"Could not parse result {result} from uri {requestUri} to integer");
+    internal int GetIntegerFromString(string? inputString)
+    {
+        _logger.LogTrace("{method}({param})", nameof(GetIntegerFromString), inputString);
+        return (int) double.Parse(inputString ?? throw new ArgumentNullException(nameof(inputString)), CultureInfo.InvariantCulture);
     }
 
     public async Task<int?> GetCurrentInverterPower()
@@ -77,11 +88,13 @@ await _telegramService.SendMessage(
         }
         var result = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
 
-        if (int.TryParse(result, out var overage))
+        try
         {
-            return overage;
+            return GetIntegerFromString(result);
+        }
+        catch (Exception)
+        {
+            throw new InvalidCastException($"Could not parse result {result} from uri {requestUri} to integer");
         }
-
-        throw new InvalidCastException($"Could not parse result {result} from uri {requestUri} to integer");
     }
 }
\ No newline at end of file