diff --git a/VectoCommon/VectoCommon/Models/FuelType.cs b/VectoCommon/VectoCommon/Models/FuelType.cs
index 63ac267e44b6795a5666a16d02bd64ea36c3c781..8b13eab40ea137227113fe157f6f82b8a5d96bed 100644
--- a/VectoCommon/VectoCommon/Models/FuelType.cs
+++ b/VectoCommon/VectoCommon/Models/FuelType.cs
@@ -74,5 +74,16 @@ namespace TUGraz.VectoCommon.Models
 		{
 			return ftype.GetLabel();
 		}
+
+		public static bool IsGaseous(this FuelType ftype)
+		{
+			switch (ftype) {
+				case (FuelType.NGPI):
+				case (FuelType.NGCI):
+					return true;
+				default:
+					return false;
+			}
+		}
 	}
 }
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