100 Millionen Dollar für die CO2-Entfernung: Die Musk Foundation XPrize-Ergebnisse
Reading Time: 7min
In 2021, XPRIZE launched a $100 million competition - the largest prize purse in its history - to find the most promising ways to pull carbon dioxide out of the atmosphere and oceans and lock it away for good.
Four years and 1,334 teams later, the competition has wrapped, and XPRIZE has just published its Post-Prize Impact Report.
The big claim: every $1 of prize money catalyzed roughly $39 of real-world impact.
What is CDR?
Carbon dioxide removal (CDR) means literally taking CO₂ out of the air and storing it somewhere it can't escape - in rocks, in soil, deep underground, or in long-lasting materials. It is different from cutting emissions; it's about removing carbon that's already up there, through additional human-led activities, beyond what nature already removes through oceans and soils (less than 50% of global yearly emissions). Climate scientists, countless governments and public institutions agree we will need both - reducing what we can, removing the rest.
The numbers in plain language
The XPRIZE competition required teams to actually demonstrate this — not in a lab, but in the real world — by removing at least 1,000 tonnes of CO₂ in a single year. That threshold matters: it's the bridge between a science experiment and an operating business.
A few of the headline figures from the report:
1,334 teams registered, from 88 countries
Half of those teams were founded after the prize launched — the competition essentially helped create a new industry
Participating companies raised $3.3 billion in funding during and after the competition, compared to $287 million in the 13 years before
The cohort generated roughly 2,856 new jobs and filed 875 patents in just four years (almost as many as in the previous five decades combined)
Teams have collectively removed about 244,000 tonnes of CO₂ so far and sold around 9.5 million tonnes in carbon credits (including credits to be delivered in future years), worth roughly $1.9 billion
The winners — and what they tell us about what works
Six teams shared the $100M purse. The winners reveal a lot about which carbon removal approaches are actually deployable today versus still maturing:
Grand Prize ($50M): Mati Carbon (USA/India) - Spreads crushed volcanic rock on smallholder farms
1st Runner-Up ($15M): NetZero (France/Brazil) - Turns crop waste into long-lasting charcoal called biochar
2nd Runner-Up ($8M): Vaulted Deep (USA) - Injects organic waste deep underground
3rd Runner-Up ($5M): UNDO Carbon (UK/Canada) - Also uses crushed rock weathering
X-Factor (Air, $1M): Project Hajar (Oman/USA) - Combines air capture with rock mineralization
X-Factor (Ocean, $1M): Planetary (Canada) - Adds minerals to seawater so it absorbs more CO₂
Glossary
A quick glossary, because some of these terms get thrown around a lot:
Enhanced rock weathering: grinding up volcanic rock (usually basalt) and spreading it on farmland. The rock reacts with rainwater and CO₂ to form stable bicarbonate, which eventually washes into the ocean and stays locked away for thousands of years. As a bonus, the rock dust adds nutrients that help crops grow.
Biochar: agricultural waste like crop residue is heated without oxygen, turning it into a stable form of charcoal. Mixed into soil, it stores carbon for hundreds of years and helps the soil retain water and nutrients.
Direct air capture (DAC): machines that use chemicals or filters to pull CO₂ straight out of the air. Powerful in theory, but expensive and energy-hungry today.
Ocean alkalinity enhancement: adding alkaline minerals to seawater so the ocean naturally absorbs more CO₂ from the atmosphere.
The most striking finding: all four top winners use either rock weathering or biochar. No DAC company won a top-four prize. According to XPRIZE's technical lead, no DAC or ocean team actually hit the 1,000-tonne removal threshold during the competition.
That's a meaningful signal. The technologies that won are the ones that use familiar industrial equipment — trucks, kilns, grinders — rather than building entirely new chemical plants.
What explains the success stories
Looking across the winners, a few patterns stand out:
1. Co-benefits make the economics work. Mati Carbon's basalt application doesn't just store carbon - it raises smallholder farmer crop yields by about 20% and has added an estimated $1.5M in farmer income across deployments in India, Tanzania, and Zambia. NetZero gives biochar back to farmers to improve their soil. The teams that scaled fastest weren't relying solely on selling carbon credits.
2. Rigorous measurement was the real moat. Mati and UNDO both do enhanced rock weathering, but Mati won the grand prize because of how well it measures and verifies its results - soil sampling before and after, GPS tagging, and software tracking the full carbon footprint of moving and applying the rock. In a market where buyers are paying for an invisible service, trustworthy measurement is the product.
3. Partnerships beat going it alone. Several finalists were partnerships between a capture company and a storage company - for example, Project Hajar pairs air capture with rock mineralization. The winners built ecosystems, not silos.
4. Investors followed validation closely. Companies that became XPRIZE finalists raised, on average, 6,731% more capital during and after the competition than they had before. That's the prize working as a credibility signal that buyers and investors trusted.
What the broader market is doing right now
Reading the XPRIZE results against current market data tells a clear story:
Quality is winning over volume. Total carbon credit retirements actually fell about 4.5% in 2025, but durable removal contracts surged. Microsoft alone more than doubled its carbon removal contracting to roughly 45 million tonnes in 2025 — buyers want fewer, higher-integrity tonnes.
DAC is in a reality check. Of the 2.4 million tonnes of DAC contracted globally between 2022 and mid-2025, only about 1,186 tonnes had actually been delivered. Average DAC prices sit around $646 per tonne, while market analysts say large-scale demand needs prices below $200–300 per tonne.
By comparison, Mati Carbon is targeting under $100 per tonne. The XPRIZE outcome maps almost exactly onto what buyers are willing to pay for at scale today.
Mineralization, biochar, and ocean approaches are quietly maturing. They're cheaper, more measurable, and have co-benefits that make them easier to finance.
How Planet2050 fits in
This is where the XPRIZE story connects directly to what we're building at Planet2050.
Four years ago, durable carbon removal was an idea with a few demonstration plants. Now it's an industry with offtake contracts, exits, public companies, and a clearly stratified set of pathways — some that work today, some that need another decade.
The XPRIZE proved which carbon removal technologies work.
But the bottleneck isn't innovation anymore - it's financing. To meet net-zero targets, the world needs to scale carbon removal capacity by roughly 4,000 times over the next 25 years. The XPRIZE winners can't do that on prize money alone. They need patient, structured capital - and millions of investors and corporate buyers need a credible way to participate.
That's the gap Planet2050 was built to fill.
We finance certified, high-integrity carbon removal and reduction projects — exactly the kinds of approaches that won at XPRIZE: biochar, enhanced rock weathering, CO₂ stored in materials, and durable nature-based solutions.
We use a 40-criteria due diligence framework so every project meets the same standards of measurement and verification that distinguished XPRIZE's top winners.
Our upcoming public listing in 2026 will make this asset class accessible to retail and institutional investors alike.
The lesson from the XPRIZE look-back is that a viable carbon removal industry now exists.
The question for the next decade is whether we can finance it at the scale the climate actually requires. That's the work ahead - and it's the work Planet2050 is here to do.
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