diff --git a/config.default.yaml b/config.default.yaml
index f99b1b7a..2d9f2c63 100644
--- a/config.default.yaml
+++ b/config.default.yaml
@@ -263,7 +263,7 @@ sector:
   biomass_transport: false  # biomass transport between nodes
   conventional_generation: # generator : carrier
     OCGT: gas
-  biosng: true
+  biosng: false
 
 
 industry: