diff --git a/Utilities/BESS.py b/Utilities/BESS.py
index 9135b2a..8fd4bc2 100644
--- a/Utilities/BESS.py
+++ b/Utilities/BESS.py
@@ -91,3 +91,9 @@ def update_cycle_SoC(bess_data, bess_soc_for_cycle, timestamps):
             ],
             axis=0,
         )
+
+def arrange_swap(bess_data, c):
+    for unit in bess_data["units"]:
+        if unit["SoC"] < c["bess"]["buffer"]:   
+            # find for unassigned BESS unit with SOC at 100%
+                
\ No newline at end of file
diff --git a/main.py b/main.py
index d5246e0..e3a2bb6 100644
--- a/main.py
+++ b/main.py
@@ -76,6 +76,8 @@ with ThreadPoolExecutor() as executor:
         else:
             is_running_in_async = False
 
+        # check if any BESS units are below threshold (buffer as defined in config)
+
         # discharge BESS for each site
         for site in c["site_info"]["sites"]:
             site_name = site["name"]