The three main categories are reduction (e.g., replacing gas or coal cook stoves with solar panels), removal (e.g., planting trees or using technology to capture and store carbon dioxide), and avoidance (e.g., protecting forests to prevent CO2 release).
Avoidance is controversial due to issues of permanence (ensuring long-term protection of forests) and additionality (proving that the protected forest would have been cut down without the offset funding). These challenges make it difficult to guarantee the effectiveness of such projects.
Only about 16% of carbon offset projects achieve the emissions reductions they claim, according to a 2024 study published in the journal Nature. Overestimation and lack of robust assessment methods are key reasons for this low success rate.
Carbon offsetting can harm local communities through land displacement, lack of consent, and environmental damage. For example, in Cambodia, mass clearing of land for reforestation led to the removal of local people without their consent, highlighting power dynamics and human rights concerns.
Article 6 of the Paris Climate Agreement establishes a global carbon market, allowing richer nations to pay developing countries to reduce emissions and count those reductions toward their own climate targets. This was finalized at COP29 in 2023, aiming to create a structured financial flow for emissions reduction.
Joshua views carbon offsetting as a complementary tool rather than a standalone solution. While it can provide jobs and revenue, he highlights concerns about land displacement and the moral implications of using Africa, which contributes less to global emissions, for offsetting purposes.
Esme suggests that individuals should research and be aware of the impact of carbon offsetting. While she doesn't explicitly recommend buying offsets, she emphasizes the importance of informed decisions and exploring other actions, such as supporting sustainable companies or governments.
Carbon offsetting is a way to try to balance carbon emissions. It’s when an individual, company or governments invest in projects that try to take carbon dioxide out of the atmosphere, to compensate for their own carbon footprint.
Many of the schemes - like planting trees, protecting forests or switching to cleaner fuels - are set up in places like Africa or South America.
But how do these schemes work in practice? A paper published in 2024 in the science journal Nature found that few schemes led to a “real emission reductions“. Are they just a distraction or worse - a con? BBC climate and science reporter Esme Stallard answers our questions.
And Joshua Gabriel Oluwaseyi, a 24 year old climate activist in Nigeria, gives us his view on the impact carbon offsetting schemes have had in Nigeria - and whether he thinks they are worth doing.
Instagram: @bbcwhatintheworld Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Julia Ross-Roy and Maria Clara Montoya Video Journalist: Baldeep Chahal Editor: Verity Wilde