diff --git a/workflow/scripts/osemosys_global/visualise.py b/workflow/scripts/osemosys_global/visualise.py
index 43936a29..0ae650fe 100644
--- a/workflow/scripts/osemosys_global/visualise.py
+++ b/workflow/scripts/osemosys_global/visualise.py
@@ -236,6 +236,9 @@ def plot_transmission_capacity(
     trn = trn.groupby(['TECHNOLOGY', 'YEAR', 'FROM', 'TO', 'LONGITUDE_FROM', 'LATITUDE_FROM', 'LONGITUDE_TO', 'LATITUDE_TO'],
                     as_index=False)['VALUE'].sum()
     
+    if trn.empty:
+        return
+    
     # assign line widths based on result data 
     scaler = MinMaxScaler()
     maxlinewidth = 3
@@ -331,6 +334,9 @@ def plot_transmission_flow(
     prd = prd.groupby(['TECHNOLOGY', 'YEAR', 'FROM', 'TO', 'LONGITUDE_FROM', 'LATITUDE_FROM', 'LONGITUDE_TO', 'LATITUDE_TO'],
                     as_index=False)['VALUE'].sum()
     
+    if prd.empty:
+        return
+    
     scaler = MinMaxScaler()
     maxlinewidth = 3
     prd['line_width'] = (scaler.fit_transform(prd[['VALUE']]) * maxlinewidth).round(1)