SunPower

aid: sunpower
name: SunPower
description: 'SunPower is a residential solar energy company (Nasdaq: SPWR) that designs, installs, and finances solar systems
  and battery storage for homeowners. The original SunPower Corporation filed for Chapter 11 bankruptcy in August 2024; its
  assets were acquired by Complete Solaria in September 2024, which rebranded as SunPower Inc. in April 2025. SunPower maintains
  the GitHub org github.com/SunPower, hosting open-source solar modeling tools including pvfactors (view-factor model for
  bifacial PV modeling), PVMismatch (mismatch loss calculations), and SolarUtils. These Python libraries are used by solar
  energy professionals and researchers for photovoltaic system modeling and simulation.'
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Solar Energy
- Renewable Energy
- Photovoltaics
- Open Source
- Python
url: https://raw.githubusercontent.com/api-evangelist/sunpower/refs/heads/main/apis.yml
created: '2026-05-02'
modified: '2026-05-02'
specificationVersion: '0.19'
apis:
- aid: sunpower:pvfactors
  name: pvfactors
  description: pvfactors is an open-source Python library for modeling diffuse shading and bifacial photovoltaic (PV) irradiance.
    It implements 2D geometry and view-factor mathematics to account for reflections between array surfaces including front
    and back sides of bifacial modules, ground, and sky. Used by PV professionals for simulation of complex shading scenarios,
    time-series irradiance calculations, and energy yield assessment. Maintained under the SunPower GitHub organization.
  humanURL: https://github.com/SunPower/pvfactors
  tags:
  - Solar Energy
  - Photovoltaics
  - Irradiance Modeling
  - Bifacial PV
  - Python
  - Open Source
  properties:
  - type: Documentation
    url: https://sunpower.github.io/pvfactors/
  - type: GitHub
    url: https://github.com/SunPower/pvfactors
  - type: PyPI
    url: https://pypi.org/project/pvfactors/
- aid: sunpower:pvmismatch
  name: PVMismatch
  description: PVMismatch is an open-source Python library for calculating mismatch losses in photovoltaic systems. It models
    I-V and P-V curves for PV cells, modules, and strings to quantify power loss from cell-to-cell or module-to-module variation
    in electrical characteristics.
  humanURL: https://github.com/SunPower/PVMismatch
  tags:
  - Solar Energy
  - Photovoltaics
  - Mismatch Loss
  - Python
  - Open Source
  properties:
  - type: GitHub
    url: https://github.com/SunPower/PVMismatch
- aid: sunpower:solar-utils
  name: SolarUtils
  description: SolarUtils is an open-source Python package providing solar position algorithms and utility functions for solar
    energy calculations, including sun position (azimuth, elevation, zenith), sunrise/sunset times, and solar irradiance decomposition
    models.
  humanURL: https://github.com/SunPower/SolarUtils
  tags:
  - Solar Energy
  - Solar Position
  - Irradiance
  - Python
  - Open Source
  properties:
  - type: GitHub
    url: https://github.com/SunPower/SolarUtils
common:
- type: DomainSecurity
  url: security/sunpower-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/sunpower-corporation
- type: Website
  url: https://www.sunpower.com
- type: GitHubOrganization
  url: https://github.com/SunPower
- url: https://us.sunpower.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com