diff --git a/src/pybalmorel/classes.py b/src/pybalmorel/classes.py
index d7518ca..b2e1598 100644
--- a/src/pybalmorel/classes.py
+++ b/src/pybalmorel/classes.py
@@ -353,13 +353,15 @@ def run(self, scenario: str, cmd_line_options: dict = {}):
     def load_incfiles(self, 
                       scenario: str = 'base', 
                       use_provided_read_files: bool = True,
-                      read_file: str = 'Balmorel_ReadData'):
+                      read_file: str = 'Balmorel_ReadData',
+                      overwrite: bool = False):
         """Will load .inc files from the specific scenario
 
         Args:
             scenario (str, optional): The scenario that you . Defaults to 'base'.
             use_provided_read_files (bool, optional): Use provided Balmorel_ReadData.gms and Balmorelbb4_ReadData.inc. Defaults to True.
             read_file (str, optional): The name of the read file to be executed. Defaults to Balmorel_ReadData
+            overwrite (bool, optional): Will overwrite an existing %scenario%_input_data.gdx file from a previous .load_incfiles execution 
             
         Raises:
             KeyError: _description_
@@ -368,37 +370,44 @@ def load_incfiles(self,
         if not(scenario in self.scenarios):
             raise KeyError('%s scenario wasnt found.\nRun this Balmorel(...) class again if you just created the %s scenario.'%(scenario, scenario))
         
+        
         # Path to the GAMS system directory
         model_folder = os.path.join(self.path, scenario, 'model')
-
-        # Are you using the provided 'ReadData'-Balmorel files or a custom one?
-        use_provided_read_files = True
-        if use_provided_read_files:
-            pkgdir = sys.modules['pybalmorel'].__path__[0]
-            # Copy Balmorel_ReadData and Balmorelbb4_ReadData 
-            # into the model folder if there isn't one already
-            for file in ['Balmorel_ReadData.gms', 'Balmorelbb4_ReadData.inc']:
-                if not(os.path.exists(os.path.join(model_folder, file))):
-                    shutil.copyfile(os.path.join(pkgdir, file), os.path.join(model_folder, file))
-                    print(os.path.join(model_folder, file))
-
-        # Initialize GAMS Workspace
-        ws = gams.GamsWorkspace(working_directory=model_folder)
-
-        # Set options
-        opt = ws.add_options()
-        opt.gdx = '%s_input_data.gdx'%scenario # Setting the output gdx name (note, could be overwritten by the cmd line options, which is intended)        
         
-        # Load the GAMS model
-        model_db = ws.add_job_from_file(os.path.join(model_folder, read_file), job_name=scenario)
+        if os.path.exists(os.path.join(model_folder, '%s_input_data.gdx'%scenario)) and not(overwrite):
+            ws = gams.GamsWorkspace()
+            db = ws.add_database_from_gdx(os.path.join(model_folder, '%s_input_data.gdx'%scenario))
+            self.input_data[scenario] = db
+            
+        else:
+            # Are you using the provided 'ReadData'-Balmorel files or a custom one?
+            use_provided_read_files = True
+            if use_provided_read_files:
+                pkgdir = sys.modules['pybalmorel'].__path__[0]
+                # Copy Balmorel_ReadData and Balmorelbb4_ReadData 
+                # into the model folder if there isn't one already
+                for file in ['Balmorel_ReadData.gms', 'Balmorelbb4_ReadData.inc']:
+                    if not(os.path.exists(os.path.join(model_folder, file))):
+                        shutil.copyfile(os.path.join(pkgdir, file), os.path.join(model_folder, file))
+                        print(os.path.join(model_folder, file))
+
+            # Initialize GAMS Workspace
+            ws = gams.GamsWorkspace(working_directory=model_folder)
+
+            # Set options
+            opt = ws.add_options()
+            opt.gdx = '%s_input_data.gdx'%scenario # Setting the output gdx name (note, could be overwritten by the cmd line options, which is intended)        
+            
+            # Load the GAMS model
+            model_db = ws.add_job_from_file(os.path.join(model_folder, read_file), job_name=scenario)
 
-        # Run the GAMS file
-        model_db.run(opt)
+            # Run the GAMS file
+            model_db.run(opt)
 
-        # Store the database (will take some minutes)
-        self.input_data[scenario] = model_db.get_out_db()
-        
-        
+            # Store the database (will take some minutes)
+            self.input_data[scenario] = model_db.get_out_db()
+            
+            
 class GUI:
     def __init__(self) -> None:
         pass