> For the complete documentation index, see [llms.txt](https://kb.bravegen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.bravegen.com/carbon/core-concepts/emission-factors.md).

# Emission Factors

- [Emission Factor Libraries](https://kb.bravegen.com/carbon/core-concepts/emission-factors/emission-factor-libraries.md)
- [Subscriptions](https://kb.bravegen.com/carbon/core-concepts/emission-factors/emission-factor-libraries/subscriptions.md)
- [Emission Factor Groups](https://kb.bravegen.com/carbon/core-concepts/emission-factors/emission-factor-groups.md)
- [Updating Emission Factors](https://kb.bravegen.com/carbon/core-concepts/emission-factors/updating-emission-factors.md)
- [Custom Emission Factors](https://kb.bravegen.com/carbon/core-concepts/emission-factors/custom-emission-factors.md)