diff --git a/docs/sphinx/source/whatsnew/v0.9.0.rst b/docs/sphinx/source/whatsnew/v0.9.0.rst
index 65af5620d0..bb5704375e 100644
--- a/docs/sphinx/source/whatsnew/v0.9.0.rst
+++ b/docs/sphinx/source/whatsnew/v0.9.0.rst
@@ -45,6 +45,10 @@ Breaking changes
   ``surface_azimuth`` are now required parameters for
   :py:func:`pvlib.modelchain.basic_chain` (:issue:`1028`, :pull:`1181`)
 
+* Removed the ``**kwargs`` parameters from :py:meth:`~pvlib.pvsystem.PVSystem.sapm` and
+  :py:meth:`~pvlib.pvsystem.PVSystem.calcparams_desoto` and 
+  :py:meth:`~pvlib.pvsystem.PVSystem.calcparams_cec` (:issue:`1118`, :pull:`1222`)
+
 
 Deprecations
 ~~~~~~~~~~~~
diff --git a/pvlib/pvsystem.py b/pvlib/pvsystem.py
index f6901617c3..a7dafbc701 100644
--- a/pvlib/pvsystem.py
+++ b/pvlib/pvsystem.py
@@ -379,7 +379,7 @@ def get_iam(self, aoi, iam_model='physical'):
                      for array, aoi in zip(self.arrays, aoi))
 
     @_unwrap_single_value
-    def calcparams_desoto(self, effective_irradiance, temp_cell, **kwargs):
+    def calcparams_desoto(self, effective_irradiance, temp_cell):
         """
         Use the :py:func:`calcparams_desoto` function, the input
         parameters and ``self.module_parameters`` to calculate the
@@ -393,9 +393,6 @@ def calcparams_desoto(self, effective_irradiance, temp_cell, **kwargs):
         temp_cell : float or Series or tuple of float or Series
             The average cell temperature of cells within a module in C.
 
-        **kwargs
-            See pvsystem.calcparams_desoto for details
-
         Returns
         -------
         See pvsystem.calcparams_desoto for details
@@ -420,7 +417,7 @@ def calcparams_desoto(self, effective_irradiance, temp_cell, **kwargs):
         )
 
     @_unwrap_single_value
-    def calcparams_cec(self, effective_irradiance, temp_cell, **kwargs):
+    def calcparams_cec(self, effective_irradiance, temp_cell):
         """
         Use the :py:func:`calcparams_cec` function, the input
         parameters and ``self.module_parameters`` to calculate the
@@ -434,9 +431,6 @@ def calcparams_cec(self, effective_irradiance, temp_cell, **kwargs):
         temp_cell : float or Series or tuple of float or Series
             The average cell temperature of cells within a module in C.
 
-        **kwargs
-            See pvsystem.calcparams_cec for details
-
         Returns
         -------
         See pvsystem.calcparams_cec for details
@@ -501,7 +495,7 @@ def calcparams_pvsyst(self, effective_irradiance, temp_cell):
         )
 
     @_unwrap_single_value
-    def sapm(self, effective_irradiance, temp_cell, **kwargs):
+    def sapm(self, effective_irradiance, temp_cell):
         """
         Use the :py:func:`sapm` function, the input parameters,
         and ``self.module_parameters`` to calculate
@@ -515,9 +509,6 @@ def sapm(self, effective_irradiance, temp_cell, **kwargs):
         temp_cell : float or Series or tuple of float or Series
             The average cell temperature of cells within a module in C.
 
-        kwargs
-            See pvsystem.sapm for details
-
         Returns
         -------
         See pvsystem.sapm for details