diff --git a/config/config.default.yaml b/config/config.default.yaml
index 1e26781d..95ae738e 100644
--- a/config/config.default.yaml
+++ b/config/config.default.yaml
@@ -295,6 +295,7 @@ pypsa_eur:
   - offwind-dc
   - solar
   - ror
+  - nuclear
   StorageUnit:
   - PHS
   - hydro