Carbon offsets and credits

Renewable energy projects, such as these wind turbines near Aalborg, Denmark, constitute one common type of carbon offset project.[1]

Carbon offsetting is a carbon trading mechanism that enables entities to compensate for offset greenhouse gas emissions by investing in projects that reduce, avoid, or remove emissions elsewhere. When an entity invests in a carbon offsetting program, it receives carbon credit or offset credit, which account for the net climate benefits that one entity brings to another. After certification by a government or independent certification body, credits can be traded between entities. One carbon credit represents a reduction, avoidance or removal of one metric tonne of carbon dioxide or its carbon dioxide-equivalent (CO2e).

A variety of greenhouse gas reduction projects can create offsets and credits. These include forestry projects that avoid logging and plant saplings,[1][2] renewable energy projects such as wind farms, biomass energy, biogas digesters, hydroelectric dams, as well as energy efficiency projects. Further projects include carbon dioxide removal projects, carbon capture and storage projects, and the elimination of methane emissions in various settings such as landfills.

Carbon offset and credit programs provide a mechanism for countries to meet their Nationally Determined Contributions (NDC) commitments to achieve the goals of the Paris Agreement.[3] Article 6 of the Paris Agreement includes three mechanisms for "voluntary cooperation" between countries towards climate goals, including carbon markets. Article 6.2 enabled countries to directly trade carbon credits and units of renewable power with each other. Article 6.4 established a new international carbon market allowing countries or companies to use carbon credits generated in other countries to help meet their climate targets.

Carbon offset and credit programs are coming under increased scrutiny because their claimed emissions reductions may be inflated compared to the actual reductions achieved.[4][5][6] To be credible, the reduction in emissions must meet three criteria: they must last indefinitely, be additional to emission reductions that were going to happen anyway, and must be measured and monitored to assure the that the amount of reduction promised has in fact been attained.[7]

  1. ^ a b Hamrick, Kelley; Gallant, Melissa (May 2017). "Unlocking Potential: State of the Voluntary Carbon Markets 2017" (PDF). Forest Trends’ Ecosystem Marketplace. p. 10. Archived (PDF) from the original on 2020-08-14. Retrieved 2019-01-29.
  2. ^ Haya, Barbara K.; Evans, Samuel; Brown, Letty; Bukoski, Jacob; Butsic, Van; Cabiyo, Bodie; Jacobson, Rory; Kerr, Amber; Potts, Matthew; Sanchez, Daniel L. (2023-03-21). "Comprehensive review of carbon quantification by improved forest management offset protocols". Frontiers in Forests and Global Change. 6. Bibcode:2023FrFGC...6.8879H. doi:10.3389/ffgc.2023.958879. ISSN 2624-893X.
  3. ^ "Climate Explainer: Article 6". World Bank. Retrieved 2023-03-29.
  4. ^ "Goldman School of Public Policy | Goldman School of Public Policy | University of California, Berkeley". gspp.berkeley.edu. Retrieved 2023-12-28.
  5. ^ Probst, Benedict; Toetzke, Malte; Anadon, Laura Diaz; Kontoleon, Andreas; Hoffmann, Volker (2023-07-27). Systematic review of the actual emissions reductions of carbon offset projects across all major sectors (Report). In Review. doi:10.21203/rs.3.rs-3149652/v1. hdl:20.500.11850/620307.
  6. ^ Cite error: The named reference :1 was invoked but never defined (see the help page).
  7. ^ Hawken, Paul, ed. (2021). Regeneration: ending the climate crisis in one generation. New York: Penguin Books. ISBN 978-0-14-313697-2.

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