The formal methodology, emission factor datasets, and GHG Protocol alignment documentation underpinning GreenCalculus.com.
Built for sustainability officers, CSRD compliance teams, ESG auditors, and academic researchers who need a transparent, citable source for carbon accounting methodology.
→ Cite this repository — GitHub renders a one-click BibTeX/APA export in the sidebar.
| File | Description |
|---|---|
METHODOLOGY.md |
White-paper-style formal methodology — GWP basis, scope definitions, calculation architecture, data provenance |
CITATION.cff |
Cite this repository in BibTeX or APA with one click |
CHANGELOG.md |
Full record of methodology and factor changes by version |
| File | Description |
|---|---|
data/gwp-values.json |
IPCC AR6 GWP-100 values for 16 gases — machine-readable |
data/emission-factors.json |
Scope 1 (12 fuels) + Scope 2 (15 countries) — JSON |
data/emission-factors.csv |
Same data — spreadsheet-friendly CSV |
| File | Standard |
|---|---|
standards/ghg-protocol-corporate.md |
GHG Protocol Corporate Standard |
standards/ghg-protocol-scope3.md |
GHG Protocol Scope 3 Standard (15 categories) |
standards/ghg-protocol-lsr-2026.md |
GHG Protocol Land Sector & Removals Standard (2026) |
standards/ipcc-ar6.md |
IPCC AR6 GWP-100 basis |
standards/iea-2026.md |
IEA Global Energy Review 2026 grid factors |
| File | Description |
|---|---|
schema-examples/webapplication.json |
JSON-LD template for carbon calculator pages |
schema-examples/dataset.json |
JSON-LD template for emission factor data pages |
schema-examples/howto.json |
JSON-LD template for reporting guide pages |
| Topic | Position |
|---|---|
| GWP basis | IPCC AR6 GWP-100 |
| CH₄ (fossil) GWP | 29.8 (AR5 was 25 — +19.2%) |
| CH₄ (biogenic) GWP | 27.9 |
| N₂O GWP | 273 |
| Biogenic CO₂ | Excluded from Scope 1 per GHG Protocol |
| Org boundary default | Operational control approach |
| Land sector | GHG Protocol LSR 2026 (published 30 Jan 2026) |
| Dataset versioning | CalVer — YYYY.N |
- GHG Protocol Corporate Standard (2026 revision)
- GHG Protocol Scope 3 Standard (2011, current)
- GHG Protocol Land Sector & Removals Standard (2026)
- IPCC AR6 (scientific basis, GWP values)
- IEA Global Energy Review 2026 (grid factors)
Direct download (JSON):
Direct download (CSV):
GWP values:
https://raw.githubusercontent.com/greencalculus/greencalculus-methodology/main/data/gwp-values.json
Current: 2026.1 — published 2026-05-10
Next planned: 2026.2 (Q3 2026) — Scope 3 Categories 6 & 7, expanded grid factors
MIT License. See LICENSE.
If you use this methodology in research or reporting, please cite via
the CITATION.cff file.
GreenCalculus.com is the traceable reference layer for corporate carbon accounting — high-precision calculators built for sustainability officers, engineers, and corporate compliance teams, every result traceable to a published factor and a named standard.
Built and maintained by Jeremiah Say — Lead Systems Architect · GHG Protocol · IPCC AR6 · CSRD/ESRS E1 · SBTi · PCAF