The math behind Microsoft’s carbon removals purchase pause

Microsoft halts new carbon removal orders despite 2030 carbon negative pledge

Microsoft has stopped placing new orders for carbon removal credits. The company remains committed to its 2030 carbon negative target, but data centre emissions driven by artificial intelligence expansion have complicated delivery. Existing contracts worth billions remain in place.

The pause matters because Microsoft dominates the carbon removal market. In 2025, the company accounted for 90% of global carbon removal purchases, buying credits from 21 suppliers. Its total procurement has reached 45 million tonnes since launching its removal programme.

For UK businesses tracking corporate climate strategies, this development raises questions about the viability of relying heavily on carbon removal to meet net zero targets when emissions growth outpaces removal capacity. It also highlights the tension between ambitious climate commitments and rapid technology expansion.

Microsoft’s climate commitments and carbon removal strategy

In 2020, Microsoft set two distinct targets. First, the company pledged to become carbon negative by 2030, meaning it would remove more carbon from the atmosphere than it emits. Second, it committed to removing all historical emissions dating back to 1975 by 2050.

Carbon negative differs from carbon neutral. Neutrality means balancing emissions with an equivalent amount of removal or offsetting. Carbon negative requires removing more than you emit. Microsoft achieved carbon neutrality in 2012 and met its 2025 renewable energy goal in early 2026, matching 100% of global electricity consumption with renewables.

The company’s approach combines emission reductions with carbon removal purchases. It invests in both nature-based solutions such as afforestation and soil carbon sequestration, alongside engineered technologies including direct air capture and bioenergy with carbon capture. These methods vary significantly in cost, permanence, and scalability.

Microsoft’s Carbon Removal Program became the market’s dominant force. The company purchased credits equivalent to removing emissions from nearly 10 million petrol cars for a year in 2025 alone. Cumulative purchases of 45 million tonnes dwarf competitors. Frontier, a collective of companies funding carbon removal, has procured just 1.8 million tonnes by comparison.

Emissions surge conflicts with reduction timeline

Microsoft informed suppliers in early 2026 that it would pause new carbon removal purchases. Bloomberg and specialist climate publications confirmed the move. However, existing multi-year agreements remain active, including a recent 15-year contract for over 600,000 tonnes announced shortly before the pause.

A company spokesperson stated that Microsoft continually reviews its carbon removal portfolio and market conditions to maintain the optimal balance on its path to carbon negative status. The statement provided no timeline for resuming purchases.

This decision coincides with concerning emissions data. Microsoft’s May 2025 Environmental Sustainability Report revealed total greenhouse gas emissions have risen 23.4% since 2020. Scope 3 emissions, which comprise 97.3% of the company’s footprint, increased 26% over the same period.

The primary driver is data centre expansion to support artificial intelligence services. Energy use across Microsoft’s infrastructure increased 168% since 2020. Revenue grew 71% during this period, but emissions growth substantially outpaced business growth. Scope 3 emissions include construction materials such as steel and concrete, hardware manufacturing, and customer device use.

Microsoft did reduce Scope 1 and 2 emissions by 30% from 2020 levels. These categories cover direct emissions from facilities and purchased electricity. Nevertheless, the overall footprint expanded because Scope 3 emissions dominate the total.

The company targets cutting emissions to under 6 million metric tonnes by 2030, then purchasing equivalent carbon removal to reach net zero. Additional removal beyond that point would achieve carbon negative status. Based on current trajectories, this requires both dramatic emission cuts and scaled removal capacity.

Practical consequences for carbon removal markets and corporate climate targets

Microsoft’s dominance means its purchasing decisions reshape market dynamics. When one buyer represents 79% to 90% of global demand historically, pausing orders affects the entire sector. Carbon removal suppliers, particularly early-stage companies developing engineered solutions, depend on long-term purchase commitments to secure financing and build infrastructure.

Direct air capture facilities require substantial upfront investment. Companies like Climeworks and Carbon Engineering need buyer certainty to justify construction costs. Without Microsoft’s demand signal, project financing becomes harder to secure. This potentially delays the scaling needed to reach 7 to 9 billion tonnes of annual removal capacity by 2050, the level scientists estimate is necessary to meet Paris Agreement targets.

For UK businesses, this development illustrates a critical risk in net zero planning. Relying on future carbon removal markets to balance persistent emissions assumes those markets will scale affordably and reliably. Microsoft’s experience suggests that even well-funded buyers with strong commitments face challenges when emissions growth exceeds expectations.

The pause also raises questions about Scope 3 emission control. Microsoft set Science Based Targets initiative goals requiring a 30% reduction in Scope 3 emissions per unit of revenue from 2017 levels, with no absolute Scope 3 growth. Yet absolute Scope 3 emissions have grown substantially. This pattern reflects a common challenge: revenue growth and business model changes can overwhelm intensity improvements.

UK manufacturers and service providers expanding digital operations face similar dynamics. Cloud computing, AI integration, and increased data processing add to Scope 3 footprints through supply chain emissions. Consequently, companies cannot assume technology adoption remains emissions-neutral, even when providers claim renewable energy use.

Microsoft has implemented specific innovations worth noting. The company uses mass timber in data centre construction, reducing embodied carbon by 65% compared to steel and concrete. Its Supplier Code of Conduct now mandates 100% carbon-free energy by 2030. As a result, 89 supplier facilities have already contributed 232,000 tonnes of avoided emissions. The company has deployed nearly $800 million through its Climate Impacts Fund for climate technology investment.

These measures demonstrate that large-scale emission reductions require supply chain engagement and infrastructure changes, not just carbon removal purchases. For UK SMEs in corporate supply chains, such requirements increasingly appear in contract terms and supplier assessments. Public sector buyers already reference PPN 06/21, which requires carbon reduction plans for contracts above £5 million annually.

What the market pause reveals about net zero delivery

Microsoft’s cumulative carbon removal purchases total 45 million tonnes. The company procured credits from 21 different suppliers in 2025, covering both nature-based and engineered solutions. This volume represents removing emissions equivalent to nearly 10 million internal combustion engine vehicles operating for one year.

Total emissions rose 23.4% from 2020 to 2025. Scope 3 emissions increased 26% over the same period and now represent 97.3% of Microsoft’s total footprint. Data centre energy use grew 168% since 2020, driven by artificial intelligence expansion.

The company targets reducing emissions to under 6 million metric tonnes by 2030, with matching carbon removal to achieve net zero before reaching carbon negative status. Global carbon removal capacity needs to reach 7 to 9 billion tonnes annually by 2050 to support Paris Agreement temperature limits.

Microsoft achieved 100% renewable electricity matching for global consumption in early 2026. The company has invested nearly $800 million through its Climate Impacts Fund. Supplier facilities meeting carbon-free energy requirements have avoided 232,000 tonnes of emissions.

Mass timber construction in data centres cuts embodied carbon by 65%. Microsoft’s 2020 commitment includes removing all historical emissions since 1975 by 2050. The company holds 79% to 90% of historical global carbon removal market share.

Strategic considerations for businesses with net zero commitments

Microsoft’s situation offers lessons for UK businesses developing climate strategies. First, technology-driven growth can overwhelm emission reduction efforts. Companies expanding digital services, manufacturing capacity, or supply chain complexity should model emissions growth scenarios that account for business development, not just operational efficiency gains.

Second, carbon removal markets remain immature. Prices vary widely depending on method, permanence, and verification standards. Nature-based solutions typically cost £10 to £50 per tonne but face permanence questions. Engineered removal such as direct air capture currently costs £200 to £600 per tonne, with prices expected to fall as capacity scales. However, Microsoft’s pause suggests scaling timelines carry uncertainty.

Third, Scope 3 emissions require supply chain collaboration. Microsoft mandates carbon-free energy from suppliers by 2030. UK businesses in tech supply chains will increasingly face similar requirements. Preparing now provides competitive advantage when such terms become standard.

Companies should prioritize emission reductions over removal purchases where possible. Microsoft reduced Scope 1 and 2 emissions by 30% despite overall footprint growth. This demonstrates that direct operational control delivers more reliable results than relying on external removal markets or offset purchases.

For businesses facing PPN 06/21 compliance in public sector supply chains, documenting emission reduction plans and supply chain engagement becomes essential. Our net-zero program helps suppliers develop carbon reduction plans that meet procurement requirements whilst supporting genuine emission cuts.

The renewable energy approach also merits attention. Microsoft matched 100% of electricity consumption with renewables through power purchase agreements and on-site generation. However, this did not prevent overall emissions growth because Scope 3 sources dominate the footprint. UK businesses should therefore assess which emission sources they can directly control versus those requiring supplier engagement or removal strategies.

Microsoft’s experience suggests that ambitious targets require conservative emission growth assumptions. The company set its 2030 goals before AI expansion accelerated data centre growth. Business planning should stress-test climate commitments against realistic expansion scenarios, particularly when entering new markets or adopting new technologies.

Policy context and market development signals

The Science Based Targets initiative provides the framework Microsoft references for Scope 3 goals. SBTi requires companies to reduce Scope 3 emissions intensity by at least 30% from a base year and prevent absolute Scope 3 growth. Microsoft has struggled with the absolute growth limit despite intensity improvements per revenue unit.

This challenge reflects wider questions about whether intensity targets suffice when companies scale rapidly. UK businesses setting science-based targets should consider whether their growth plans allow meeting both intensity and absolute emission limits. The SBS compliance service helps companies navigate SBTi requirements and develop realistic reduction pathways.

Carbon removal market development depends on sustained demand signals. Microsoft’s pause creates uncertainty for suppliers and investors, potentially slowing cost reductions that depend on economies of scale. For the market to reach the 7 to 9 billion tonnes of annual capacity needed by 2050, investment must continue flowing to both nature-based and engineered solutions.

UK businesses should monitor how Microsoft resolves its emissions trajectory. If the company resumes carbon removal purchases at previous levels, it signals confidence that emission reductions will materialize. If the pause extends significantly, it may indicate that relying heavily on removal to meet net zero targets carries execution risk.

The shift towards supply chain requirements also continues. Microsoft’s Supplier Code of Conduct mandates 100% carbon-free energy by 2030. Similar requirements appear in UK public procurement through PPN 06/21 and in private sector supply chain standards. Businesses should prepare for carbon performance to become a routine commercial consideration, not an optional sustainability initiative.

Authoritative sources and further information

Microsoft publishes annual Environmental Sustainability Reports detailing emissions data, reduction initiatives, and carbon removal purchases. The May 2025 report contains the emissions growth figures and program updates referenced here. These reports provide transparency into how a major corporation approaches net zero delivery.

The Science Based Targets initiative website explains the standards Microsoft references for its Scope 3 commitments. SBTi provides the most widely adopted framework for corporate climate target setting, with criteria aligned to Paris Agreement temperature limits.

For UK businesses navigating public sector procurement requirements, the Procurement Policy Note 06/21 guidance details carbon reduction plan requirements for government contracts. This applies to contracts worth over £5 million per year and affects thousands of UK suppliers.

CDR.fyi maintains a public database tracking corporate carbon removal purchases, including market share data and project details. This resource helps businesses understand market development and pricing trends.

The UK government’s Net Zero Strategy outlines how carbon removal fits into national emissions reduction plans. Understanding policy context helps businesses anticipate regulatory changes and market development.