diff --git a/pvanalytics/__init__.py b/pvanalytics/__init__.py
index e69de29b..432885d7 100644
--- a/pvanalytics/__init__.py
+++ b/pvanalytics/__init__.py
@@ -0,0 +1,6 @@
+from pvanalytics import features   # noqa: F401
+from pvanalytics import filtering  # noqa: F401
+from pvanalytics import fitting    # noqa: F401
+from pvanalytics import metrics    # noqa: F401
+from pvanalytics import quality    # noqa: F401
+from pvanalytics import system     # noqa: F401
diff --git a/pvanalytics/features/__init__.py b/pvanalytics/features/__init__.py
index e69de29b..dfb7a12d 100644
--- a/pvanalytics/features/__init__.py
+++ b/pvanalytics/features/__init__.py
@@ -0,0 +1,2 @@
+from pvanalytics.features import clearsky  # noqa: F401
+from pvanalytics.features import clipping  # noqa: F401
diff --git a/pvanalytics/fitting/__init__.py b/pvanalytics/fitting/__init__.py
index e69de29b..6ec9e6b4 100644
--- a/pvanalytics/fitting/__init__.py
+++ b/pvanalytics/fitting/__init__.py
@@ -0,0 +1 @@
+from pvanalytics.fitting import temperature  # noqa: F401
diff --git a/pvanalytics/quality/__init__.py b/pvanalytics/quality/__init__.py
index e69de29b..7a4c60f6 100644
--- a/pvanalytics/quality/__init__.py
+++ b/pvanalytics/quality/__init__.py
@@ -0,0 +1,6 @@
+from pvanalytics.quality import gaps        # noqa: F401
+from pvanalytics.quality import util        # noqa: F401
+from pvanalytics.quality import irradiance  # noqa: F401
+from pvanalytics.quality import weather     # noqa: F401
+from pvanalytics.quality import outliers    # noqa: F401
+from pvanalytics.quality import time        # noqa: F401