carbon credits (carbon credit)

Carbon credits are tradeable instruments, each representing one tonne of carbon dioxide equivalent (1 tCO2e) of greenhouse gas emissions either avoided, reduced, or removed from the atmosphere. They monetise climate benefit by converting it into a financial asset that buyers — typically corporations with voluntary net-zero targets or entities under cap-and-trade regulation — purchase to offset residual emissions they cannot eliminate operationally.

For Indian waste-sector projects, carbon credits provide a supplementary revenue stream that can materially improve project IRR. Compressed biogas plants generate credits by displacing fossil natural gas or LPG; e-waste recyclers earn them by avoiding landfill methane and recovering metals at lower embodied energy than primary mining; plastic recyclers earn them by displacing virgin polymer manufacturing; tyre pyrolysis plants earn them by replacing fossil fuel oil and avoiding open-air tyre burning. A medium-sized CBG plant processing 100 TPD of feedstock typically generates 8,000-12,000 credits annually.

Two market structures coexist. The compliance market serves entities under regulatory caps — the EU Emissions Trading System, California Cap-and-Trade, and the upcoming Indian Carbon Credit Trading Scheme (CCTS) notified under the Energy Conservation (Amendment) Act, 2022. Compliance credits typically trade at USD 30-100 per tonne. The voluntary market serves corporate buyers and uses standards such as Verra (VCS), Gold Standard, the American Carbon Registry, and the new BEE Indian voluntary registry. Voluntary credit prices range widely — USD 3-25 per tonne — depending on project type, vintage, co-benefits, and verification rigour.

Credit generation requires third-party validation against a methodology (such as Verra VM0007 for waste sector, AMS-III.D for methane avoidance), baseline calculation, ongoing monitoring, and periodic verification. Transaction costs are non-trivial: validation and first-year verification typically cost USD 30,000-80,000, plus annual verification of USD 15,000-30,000. Credits also face additionality scrutiny — projects already viable without credit revenue are increasingly rejected by standards bodies. Entrepreneurs should treat carbon credits as upside rather than core revenue when building financial models.