u/Harley_Maq

Been building GreenCalculus (a carbon calculator platform) and realized there's no single clean, open, version-controlled emission factor dataset that's explicitly aligned to IPCC AR6 GWP-100 values.

So I published one on GitHub: https://github.com/greencalculus/greencalculus-methodology

What's in it:

• gwp-values.json — all 16 gases, AR6 vs AR5 comparison
• emission-factors.json + .csv — Scope 1 fuels + Scope 2 grid factors for 15 countries
• METHODOLOGY.md — formal white-paper style doc explaining the math
• CITATION.cff — one-click BibTeX/APA export if you want to cite it

One thing worth flagging: if you're still using AR5 GWP values for methane, you're underreporting fossil CH4 by ~19% (AR5 was 25, AR6 is 29.8). A lot of corporate inventories haven't updated yet.

Live calculator demo using the same factors: https://greencalculus.github.io/greencalculus-calculator-demo/

Happy to answer questions on the methodology.