Carbon credit markets face scrutiny over effectiveness in Colombia and Australia

Carbon credit markets in Colombia and Australia are facing scrutiny as investigations suggest they may serve as a substitute for actual emission reductions rather than a supplement to them.

In Colombia, companies utilize carbon credits to offset emissions and potentially reduce their national carbon tax liabilities. However, research published in Nature Communications, which examined 2,346 projects involving nearly 1 billion tons of CO2 equivalent, suggests that less than 16% of issued credits represent real emission reductions. Specifically, projects aimed at avoiding deforestation showed only an estimated 25% effective reduction.

Similarly, in Australia, the use of Australian Carbon Credit Units (ACCU) has come under fire. Critics argue that large polluters are using these credits to improve accounting balances instead of implementing physical changes, such as electrifying industrial processes. Concerns have been raised regarding the permanence of nature-based storage, as carbon sequestered in forests can be released back into the atmosphere due to wildfires, droughts, or changes in land use.