v0.13.2 (Anticipated December, 2025)

Breaking Changes

Add :py:func:`~pvlib.ivtools.sdm.fit_desoto_batzelis`, a function to estimate parameters for the De Soto single-diode model from datasheet values. (:pull:`2563`)
Add :py:func:`~pvlib.singlediode.batzelis`, a function to estimate maximum power, open circuit, and short circuit points using parameters for the single-diode equation. (:pull:`2563`)
Add :py:func:`~pvlib.pvarray.batzelis`, a function to estimate maximum power open circuit, and short circuit points from datasheet values. (:pull:`2563`)
Add method='chandrupatla' (faster than brentq and slower than newton, but convergence is guaranteed) as an option for :py:func:`pvlib.pvsystem.singlediode`, :py:func:`~pvlib.pvsystem.i_from_v`, :py:func:`~pvlib.pvsystem.v_from_i`, :py:func:`~pvlib.pvsystem.max_power_point`, :py:func:`~pvlib.singlediode.bishop88_mpp`, :py:func:`~pvlib.singlediode.bishop88_v_from_i`, and :py:func:`~pvlib.singlediode.bishop88_i_from_v`. (:issue:`2497`, :pull:`2498`)
Add Marion 2008 non-linear irradiance adjustment factor to :py:func:`pvlib.pvsystem.pvwatts_dc`. (:issue:`2566`, :pull:`2569`)
Accelerate :py:func:`~pvlib.pvsystem.singlediode` when scipy>=1.15 is installed. (:issue:`2497`, :pull:`2571`)
Add :py:func:`~pvlib.iotools.get_era5`, a function for accessing ERA5 reanalysis data. (:pull:`2573`)

Provide an overview of single-diode modeling functionality in :ref:`singlediode`. (:pull:`2565`)
Provide an overview of temperature modeling functionality in :ref:`temperature`. (:pull:`2591`)
Fix typo in parameter name atmos_refract in :py:func:`pvlib.solarposition.spa_python` and :py:func:`pvlib.spa.solar_position`. (:issue:`2532`, :pull:`2592`)

Add Python 3.14 to test suite. (:pull:`2590`)
Update pytest configuration in pyproject.toml to work with pytest 9.0. (:pull:`2596`)