v0.15.1.rst

v0.15.1 (Anticipated March 2026)

Breaking Changes

Deprecations

Bug fixes

• Fix a bug in :py:func:`pvlib.scaling.latlon_to_xy` where latitude scaling was incorrectly applied to both latitude and longitude components. (:issue:`2614`, :pull:`2712`)
• Fix a division-by-zero condition in :py:func:`pvlib.transformer.simple_efficiency` when load_loss = 0. (:issue:`2645`, :pull:`2646`)
• Update URLs in :py:mod:`pvlib.iotools.psm4` to use nlr.gov instead of nrel.gov. (:issue:`2701`, :pull:`2705`)
• Fix a bug in :py:func:`pvlib.iotools.era5._m_to_cm` where meters were incorrectly divided by 100 instead of multiplied, causing precipitations to be underestimated by a factor of 10,000 when map_variables=True. (:issue:`2724`, :pull:`2725`)

Enhancements

• Use k and cap_adjustment from :py:func:`pvlib.pvsystem.Array.module_parameters` in :py:func:`pvlib.pvsystem.PVSystem.pvwatts_dc` (:issue:`2714`, :pull:`2715`)
• Include ross and faiman_rad in the allowed models within :py:meth:`pvlib.pvsystem.PVSystem.get_cell_temperature` (:issue:`2625`, :pull:`2631`)
• Accelerate the internals of :py:func:`~pvlib.solarpostion.ephemeris`. (:pull:`2626`)

Documentation

• Add examples for run_model_from_poa() and run_model_from_effective_irradiance() (:issue:`1043`, :pull:`2621`)

• Add the following terms to the :ref:`nomenclature` page (:issue:`2564`, :pull:`2663`):

  • :term:`clearness_index`
  • :term:`clearsky_index`
  • :term:`aod`
  • :term:`aod500`

• Provide an overview of IAM modeling functionality in :ref:`iam`. (:pull:`2683`)

• Add AI checkbox to PR template, and auto-generate a comment on PRs from first-time contributors regarding AI and contributing guidelines. (:issue:`2617`, :pull:`2624`)

• Update :py:class:`pvlib.pvsystem.PVSystem` docstring to state that module_type is optional. (:issue:`2634`, :pull:`2713`)

• Fix a broken docstring reference to grounddiffuse in :py:func:`pvlib.irradiance.poa_components` (:issue:`2089`, :pull:`2708`)

Testing

• Add test to verify that :py:func:`~pvlib.transformer.simple_efficiency` produces consistent results for vectorized and scalar inputs. (:issue:`2649`, :pull:`2661`)

Benchmarking

Requirements

Maintenance

• Update all NREL references to NLR (National Laboratory of the Rockies) following the laboratory rename and domain migration from nrel.gov to nlr.gov. Rename NREL_API_KEY environment variable to NLR_API_KEY. (:issue:`2701`, :pull:`2705`)

Contributors

• Aman Srivastava (:ghuser:`aman-coder03`)
• Rajiv Daxini (:ghuser:`RDaxini`)
• Echedey Luis (:ghuser:`echedey-ls`)
• Cliff Hansen (:ghuser:`cwhanse`)
• Anton Driesse (:ghuser:`adriesse`)
• Kevin Anderson (:ghuser:`kandersolar`)
• Jason Curtis (:ghuser:`jason-curtis`)
• Rohan Saxena (:ghuser:`r0hansaxena`)
• Marco Fumagalli (:ghuser:`fuma900`)
• Jean-Baptiste Pasquier (:ghuser:`pasquierjb`)
• Rodrigo Amaro e Silva (:ghuser:`ramaroesilva`)
• James Fulton (:ghuser:`dfulu`)