Kevin Anderson

Implement all-sky spectral irradiance model(s)

9

**Is your feature request related to a problem? Please describe.** pvlib's spectral irradiance modeling is currently limited to `pvlib.spectrum.spectrl2`, a clear-sky model. As cloudy-sky spectral irradiance takes a different shape...

- [ ] Closes #1669 - [ ] I am familiar with the [contributing guidelines](https://pvlib-python.readthedocs.io/en/latest/contributing/index.html) - [ ] Tests added - [ ] Updates entries in [`docs/sphinx/source/reference`](https://github.com/pvlib/pvlib-python/blob/main/docs/sphinx/source/reference) for API changes....

A method of finding the MPP using Newton with guaranteed convergence

2

This paper provides a Newton-based method of finding the MPP, with the function and starting point constructed in such a way that they claim guarantees convergence. Rough timing (for 1000...

Compatibility with the Array API standard?

8

The [Array API standard](https://data-apis.org/array-api/latest/) makes it possible to write generic code that works with many types of arrays (NumPy, Tensorflow, PyTorch, Dask, JAX, CuPy, MXNet, Xarray, ...). In principle, this...

Add "poa_" prefix to `return_components=True` transposition model outputs

13

> Would the powers that be be willing to make the component name’s consistent across all model functions? For example, perez returns sky_diffuse, while poa_components returns poa_sky_diffuse. It also seems...