In the global effort to address climate change, some of the world’s largest companies are beginning to move beyond simply reducing emissions to actively removing carbon dioxide from the atmosphere. One of the most ambitious examples is Microsoft’s major carbon removal purchase agreements, including deals for more than 1 million tonnes of carbon dioxide removal from emerging climate technology projects.

These agreements signal a growing shift in corporate climate strategies, in which companies are not only cutting emissions but also investing in technologies that physically remove carbon already in the atmosphere.

Carbon removal deals typically involve companies purchasing carbon removal credits, where each credit represents one metric tonne of carbon dioxide removed from the atmosphere and permanently stored.

Through these agreements, Microsoft commits to buying the carbon removal output from developers working on solutions such as bioenergy with carbon capture and storage, direct air capture, and other emerging technologies. By guaranteeing future demand for these credits, the company helps project developers secure financing and scale up technologies that would otherwise struggle to attract investment. The significance of these deals lies in the increasing recognition that reducing emissions alone will not be enough to meet global climate goals.

Climate scientists widely agree that large-scale carbon removal will be necessary to limit global warming to safe levels. Even if countries and industries significantly reduce emissions, sectors such as aviation, agriculture, and heavy manufacturing will continue to generate some greenhouse gases. Removing carbon dioxide from the atmosphere helps address these remaining emissions and contributes to long-term climate stabilisation.

For Microsoft, these carbon removal purchases are directly tied to its corporate climate commitments. The company has pledged to become carbon negative by 2030 and to remove all the carbon it has emitted since its founding by 2050. Achieving such a goal requires a combination of emissions reductions and large-scale carbon removal. The strategy is also shaped by the rapid expansion of digital infrastructure. Cloud computing, artificial intelligence, and data centres consume significant amounts of energy, making it increasingly important for technology companies to invest in solutions that offset their environmental footprint.

Microsoft’s actions are also part of a broader movement among large global institutions. Corporations, financial institutions, and climate-focused coalitions are increasingly supporting carbon removal projects as part of their sustainability strategies. Technology companies, in particular, have emerged as major buyers of carbon removal credits, helping to establish a market for technologies that could eventually remove billions of tonnes of carbon dioxide from the atmosphere each year. Early demand from large companies is intended to accelerate innovation, reduce costs, and make these technologies more widely available.

What distinguishes Microsoft’s approach is the scale and diversity of its investments. The company has signed agreements covering multiple carbon removal technologies and often supports projects at an early stage, before they become fully operational. This willingness to commit early funding helps innovators attract additional investment and build the infrastructure needed to deliver large-scale carbon removal in the future. In effect, Microsoft is helping to build the market for carbon removal technologies while also advancing its own climate goals.

Despite the promise of these initiatives, significant challenges remain. Many carbon removal technologies remain expensive and have yet to be proven at scale. Removing a single tonne of carbon dioxide can cost hundreds of dollars, and ensuring that captured carbon remains permanently stored requires long-term monitoring and verification. There is also concern among some critics that companies might rely too heavily on carbon removal as a substitute for reducing emissions. If technological progress slows down or projects fail to deliver the expected results, corporate climate targets could be jeopardised.

The implications of these developments extend beyond Europe and North America, where most carbon removal projects are currently based. Regions such as East Africa possess significant potential for nature-based carbon removal solutions, including reforestation, soil carbon restoration, and regenerative agriculture. As global demand for carbon removal grows, these areas could attract climate finance and investment to restore ecosystems while supporting local economies.

However, for communities in East Africa, the success of such initiatives will depend on ensuring that carbon removal projects deliver real environmental and social benefits. Investments must support sustainable land management, protect biodiversity, and respect local land rights, rather than merely serving as offset schemes for global corporations. If implemented responsibly, the growth of carbon removal markets could provide new opportunities for environmental restoration, climate resilience, and sustainable development across the region.

In this context, Microsoft’s million-tonne carbon removal agreements represent more than a corporate sustainability initiative. They highlight the emergence of a new climate economy in which removing carbon from the atmosphere becomes a critical component of global climate action. As the market for carbon removal grows, it may reshape how governments, businesses, and communities approach climate solutions and environmental investment in the decades ahead.