Add missing module

Author: SabineHaas

doc/modules.rst

@@ -113,7 +113,7 @@ Functions for calculating power output of a wind power plant.
 Alteration of power curves
 ==========================
 
-Functions for smoothing power curves or applying wake losses.
+Functions for smoothing power curves or applying wake losses to a power curve.
 
 .. autosummary::
    :toctree: temp/
@@ -122,6 +122,19 @@ Functions for smoothing power curves or applying wake losses.
    power_curves.wake_losses_to_power_curve
 
 
+Wake losses
+===========
+
+Functions for applying wake losses to a wind speed time series.
+
+.. autosummary::
+   :toctree: temp/
+
+   wake_losses.reduce_wind_speed
+   wake_losses.get_wind_efficiency_curve
+   wake_losses.display_wind_efficiency_curves
+
+
 ModelChain
 ==============