diff --git a/config.default.yaml b/config.default.yaml
index d185b5d1..9caf7ad4 100755
--- a/config.default.yaml
+++ b/config.default.yaml
@@ -52,7 +52,7 @@ electricity:
     Generator: [solar, onwind, offwind-ac, offwind-dc, OCGT]
     StorageUnit: [] # battery, H2
     Store: [battery, H2]
-    Link: [AC, DC]
+    Link: [] # H2 pipeline
 
   # use pandas query strings here, e.g. Country not in ['Germany']
   powerplants_filter: (DateOut >= 2022 or DateOut != DateOut)
diff --git a/config.tutorial.yaml b/config.tutorial.yaml
index 00b8576a..61866772 100755
--- a/config.tutorial.yaml
+++ b/config.tutorial.yaml
@@ -40,7 +40,7 @@ electricity:
     Generator: [OCGT]
     StorageUnit: [] #battery, H2
     Store: [battery, H2]
-    Link: []
+    Link: [] # H2 pipeline
 
   max_hours:
     battery: 6