> For the complete documentation index, see [llms.txt](https://wp2.enrex.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data.md).

# 2. Carbon Offsetting Options and Market Data

- [2.1. CO2 Allowances](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.1.-co2-allowances.md)
- [2.2. European Union Allowances (EUA)](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.2.-european-union-allowances-eua.md)
- [2.3. China's National Emissions Trading Scheme](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.3.-chinas-national-emissions-trading-scheme.md)
- [2.4. European Union Carbon Border Tax](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.4.-european-union-carbon-border-tax.md)
- [2.5. Renewable Energy Certificates (RECs)](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.5.-renewable-energy-certificates-recs.md)
- [2.6. Guarantees of Origin (GOs)](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.6.-guarantees-of-origin-gos.md)
- [2.7. Renewable Gas Guarantees of Origin (RGGOs)](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.7.-renewable-gas-guarantees-of-origin-rggos.md)
- [2.8. International Renewable Energy Certificates (IRECs)](https://wp2.enrex.io/2.-carbon-offsetting-options-and-market-data/2.8.-international-renewable-energy-certificates-irecs.md)