pvlib · cwhanse · May 16, 2025 · May 16, 2025 · May 16, 2025
diff --git a/docs/sphinx/source/user_guide/modeling_topics/bifacial.rst b/docs/sphinx/source/user_guide/modeling_topics/bifacial.rst
@@ -80,7 +80,7 @@ The model operates in the following steps:
    determines the fraction of ground-reflected irradiance that reaches the row
    surface.
 4. Find the fraction of the row surface that is shaded from direct irradiance.
-   Only sky and ground-reflected irradiance reach the the shaded fraction of
+   Only sky and ground-reflected irradiance reach the shaded fraction of
    the row surface.
 5. For the front and rear surfaces, apply the incidence angle modifier to
    the direct irradiance and sum the diffuse sky, diffuse ground, and direct

diff --git a/docs/sphinx/source/user_guide/modeling_topics/modelchain.rst b/docs/sphinx/source/user_guide/modeling_topics/modelchain.rst
@@ -371,7 +371,7 @@ DC quantities to the output of the full PVSystem.
     mc.results.dc
 
 We’ve established that the ``ModelChain.pvwatts_dc`` and
-``ModelChain.sapm`` have the same API: they take the same arugments
+``ModelChain.sapm`` have the same API: they take the same arguments
 (``self``) and they both set the ``dc`` attribute.\* Because the methods
 have the same API, we can call them in the same way. ModelChain includes
 a large number of methods that perform the same API-unification roles
@@ -489,7 +489,7 @@ Temperature data are passed in the ``weather`` DataFrame and can include:
   method is used to calculate cell temperature. If ``ModelChain.temperature_model``
   is set to any other model, ``'module_temperature'`` is ignored.
 * ambient air temperature (``'temp_air'``). In this case ``ModelChain.temperature_model``
-  is used to calculate cell temeprature.
+  is used to calculate cell temperature.
 
 Cell temperature models also can use irradiance as input. All cell
 temperature models expect POA irradiance (``'poa_global'``) as  input. When

diff --git a/docs/sphinx/source/user_guide/modeling_topics/pvsystem.rst b/docs/sphinx/source/user_guide/modeling_topics/pvsystem.rst
@@ -240,7 +240,7 @@ operates in a similar manner.
 
 
 The `PVSystem` method :py:meth:`~pvlib.pvsystem.PVSystem.get_aoi`
-operates on all `Array` instances in the `PVSystem`, whereas the the
+operates on all `Array` instances in the `PVSystem`, whereas the
 `Array` method operates only on its `Array` instance.
 
 .. ipython:: python

diff --git a/docs/sphinx/source/user_guide/modeling_topics/weather_data.rst b/docs/sphinx/source/user_guide/modeling_topics/weather_data.rst
@@ -35,7 +35,7 @@ them.
    source of weather information. However, the coverage depends on
    a weather station having been set up in advance for the location and
    times of interest. Some ground station networks like the BSRN and SURFRAD
-   make their measurement data publicly available. An global overview of ground
+   make their measurement data publicly available. A global overview of ground
    stations is available at https://SolarStations.org.
 
    Data from public ground station measurement networks are useful if you
@@ -50,7 +50,7 @@ them.
    weather station. They have high spatial and temporal resolution
    corresponding to the source satellite imagery, and are generally
    optimised to estimate solar irradiance for PV applications. Free sources
-   such as PVGIS, NSRDB, and CAMS are available, and commerical sources such
+   such as PVGIS, NSRDB, and CAMS are available, and commercial sources such
    as SolarAnywhere, Solcast, and Solargis provide paid options though often
    have free trials.
 

diff --git a/pvlib/iotools/bsrn.py b/pvlib/iotools/bsrn.py
@@ -109,7 +109,7 @@ def get_bsrn(station, start, end, username, password,
     UserWarning
         If one or more requested files are missing a UserWarning is returned
         with a list of the filenames missing. If no files match the specified
-        station and timeframe a seperate UserWarning is given.
+        station and timeframe a separate UserWarning is given.
 
     Notes
     -----

diff --git a/pvlib/iotools/pvgis.py b/pvlib/iotools/pvgis.py
@@ -720,7 +720,7 @@ def get_pvgis_horizon(latitude, longitude, url=URL, **kwargs):
     Returns
     -------
     data : pd.Series
-        Pandas Series of the retrived horizon elevation angles. Index is the
+        Pandas Series of the retrieved horizon elevation angles. Index is the
         corresponding horizon azimuth angles.
     metadata : dict
         Metadata returned by PVGIS.

diff --git a/pvlib/iotools/sodapro.py b/pvlib/iotools/sodapro.py
@@ -202,7 +202,7 @@ def get_cams(latitude, longitude, start, end, email, identifier='mcclear',
         'username': email,
         'verbose': verbose}
 
-    # Manual formatting of the input parameters seperating each by a semicolon
+    # Manual formatting of the input parameters separating each by a semicolon
     data_inputs = ";".join([f"{key}={value}" for key, value in
                             data_inputs_dict.items()])
 
@@ -214,7 +214,7 @@ def get_cams(latitude, longitude, start, end, email, identifier='mcclear',
               }
 
     # The DataInputs parameter of the URL has to be manually formatted and
-    # added to the base URL as it contains sub-parameters seperated by
+    # added to the base URL as it contains sub-parameters separated by
     # semi-colons, which gets incorrectly formatted by the requests function
     # if passed using the params argument.
     res = requests.get(base_url + '?DataInputs=' + data_inputs, params=params,

diff --git a/pvlib/ivtools/sdm/_fit_desoto_pvsyst_sandia.py b/pvlib/ivtools/sdm/_fit_desoto_pvsyst_sandia.py
@@ -335,7 +335,7 @@ def _check_converge(prevparams, result, vmp, imp, i):
     ----------
     prevparams: Convergence Parameters from the previous Iteration (used to
                 determine Percent Change in values between iterations)
-    result: performacne paramters of the (predicted) single diode fitting,
+    result: performacne parameters of the (predicted) single diode fitting,
             which includes Voc, Vmp, Imp, Pmp and Isc
     vmp: measured values for each IV curve
     imp: measured values for each IV curve

diff --git a/pvlib/solarposition.py b/pvlib/solarposition.py
@@ -134,7 +134,7 @@ def spa_c(time, latitude, longitude, pressure=101325., altitude=0.,
 
     The source files for this code are located in './spa_c_files/', along with
     a README file which describes how the C code is wrapped in Python.
-    Due to license restrictions, the C code must be downloaded seperately
+    Due to license restrictions, the C code must be downloaded separately
     and used in accordance with it's license.
 
     This function is slower and no more accurate than :py:func:`spa_python`.

diff --git a/pvlib/spa_c_files/README.md b/pvlib/spa_c_files/README.md
@@ -25,7 +25,7 @@ There are a total of 5 files needed to compile the C code, described below:
 * `cspa_py.pxd`: a cython header file which essentially tells cython which
   parts of the main header file to pay attention to
 * `spa_py.pyx`: the cython code used to define both functions in the python
-  namespace. NOTE: It is possible to provide user access to other paramters of
+  namespace. NOTE: It is possible to provide user access to other parameters of
   the SPA algorithm through modifying this file 
 * `setup.py`: a distutils file which performs the compiling of the cython code