Swiss carbon removal pioneer Climeworks raised $162 million in July 2025, pushing its total funding past $1 billion to scale direct air capture (DAC) technology and expand its carbon removal portfolio. With its Generation 3 DAC doubling CO2 capture and halving energy use, Climeworks aims to cut removal costs to $250–$350 per ton by 2030. Operating plants like Mammoth in Iceland, capturing 36000 tons yearly, the company targets 1 million tons by 2030. Yet, with DAC removing just 0.01% of the 5–16 billion tons needed annually for 1.5°C goals, can Climeworks deliver, or will high costs and policy shifts stall progress?

The $162 Million Funding

Announced July 2, 2025, Climeworks secured $162 million in equity funding led by BigPoint Holding and Partners Group, with support from existing investors like GIC and Swiss Re. This pushes total funding to over $1 billion, the highest for a pure-play carbon removal firm. The capital will enhance Generation 3 DAC, which cuts costs by 50% via doubled capture capacity and longer-lasting filters, and expand Climeworks Solutions, a portfolio blending DAC with afforestation, biochar, and enhanced rock weathering. The firm aims to scale from 36000 tons at Mammoth to 1 million tons by 2030, a $500 million investment.

Read more: Ambienta Raises €500 Million to Boost Europe’s Small Cap Green Champions

Why DAC Matters?

DAC extracts CO2 from air at 0.04% concentration, using renewable energy to store it permanently underground via mineralization, as at Iceland’s Orca (4000 tons/year) and Mammoth plants. The IPCC estimates 5–16 billion tons of annual CO2 removal are needed by 2050 to limit warming to 1.5°C, with DAC potentially handling 10%. Climeworks’ 2400 tons captured since 2021 is a fraction of the $50 billion carbon credit market, but its verifiable removals attract buyers like Microsoft and Stripe. Scaling could offset 0.1% of global emissions, though current costs of $1000/ton remain a hurdle.

How Climeworks Scales?

Generation 3 DAC, launched in 2024, uses structured sorbents to double CO2 capture per module and halve energy use, targeting $250–$350/ton by 2030 from $1000 today. Mammoth, operational since 2024, captures 36000 tons yearly but hit only 805 tons in its first 10 months, with 121 tons net after emissions. Climeworks Solutions, blending DAC with nature-based methods, serves firms like SAP, with a 37000-ton portfolio. Expansion plans include US hubs like Project Cypress, backed by $600 million in DOE grants, aiming for 1 million tons by 2030, though construction starts in 2026.

Challenges to Growth

DAC’s energy intensity—4000 kWh/ton in real-world systems—drives high costs, with Mammoth’s 121-ton net capture in 2024 showing scaling pains. Climeworks’ 1700-ton emissions in 2023 outpaced removals, drawing criticism. A 20% staff cut in May 2025, affecting 60 of 300 employees, reflects financial strain, worsened by a shaky $10 billion carbon removal market. Policy shifts, like rumored US funding cuts (later clarified), and competition from Heirloom and Carbon Engineering, which plan 1 million-ton plants, threaten Climeworks’ 10% market share. Only 0.5% of global DAC capacity is operational, needing $100 billion to scale.

Explore OneStop ESG Marketplace: Carbon capture

What’s Next for Climeworks?

Climeworks targets 1 million tons of CO2 removal by 2030, with $1 billion in new plants across the US, Canada, and Norway. Project Cypress could capture 1 million tons yearly by 2029, but permitting delays risk 20% schedule slips. Cost cuts to $400–$600/ton net removal are critical to compete with afforestation’s $50/ton. Against 35.6 billion tonnes of global CO2e emissions, Climeworks’ 36000 tons is 0.0001%, but scaling could remove 0.01% by 2030.

Explore ESG Solutions on our marketplace - OneStop ESG Marketplace.

Keep abreast of the top ESG Events on OneStop ESG Events.

OneStop ESG Educate: Your go-to source for top ESG courses and training programs tailored to your needs.