diff --git a/pvnet/models/base_model.py b/pvnet/models/base_model.py
index e7283b92..630c4aae 100644
--- a/pvnet/models/base_model.py
+++ b/pvnet/models/base_model.py
@@ -1,3 +1,4 @@
+"""Base model for all PVNet submodels"""
 import json
 import logging
 import os