diff --git a/docs/examples/energy/README.rst b/docs/examples/energy/README.rst
new file mode 100644
index 00000000..9ff7b975
--- /dev/null
+++ b/docs/examples/energy/README.rst
@@ -0,0 +1,4 @@
+Energy
+----------------
+
+This includes examples for identifying and correcting cumulative energy time series.
\ No newline at end of file
diff --git a/pvanalytics/tests/quality/test_energy.py b/pvanalytics/tests/quality/test_energy.py
index 1613605a..8ebcade3 100644
--- a/pvanalytics/tests/quality/test_energy.py
+++ b/pvanalytics/tests/quality/test_energy.py
@@ -123,6 +123,16 @@ def test_convert_cumulative_with_simple_diff(cumulative_series,
     assert_series_equal(simple_diff_result, simple_diff_energy_series)
 
 
+def test_convert_cumulative_with_avg_diff(avg_diff_energy_series):
+    """
+    Tests convert_cumulative_energy for cumulative series.
+    Test returns the corrected differenced series via avgerage differencing.
+    """
+    simple_diff_result = energy.convert_cumulative_energy(
+        energy_series=avg_diff_energy_series, system_self_consumption=0.0)
+    assert_series_equal(simple_diff_result, avg_diff_energy_series)
+
+
 def test_convert_noncumulative(noncumulative_series):
     """
     Tests convert_cumulative_energy for non-cumulative series.