The market in numbers
Carbon removal contracted each year, from every deal in the database.
6.46Mfirm tonnes contracted in 2026 so far
29.2Mfirm tonnes contracted in 2025
91%of 2025 tonnes bought by Microsoft
73deals announced in 2026
Year by year
| Year | Deals | Firm tonnes | Microsoft | Everyone else | Microsoft share | Disclosed value | Delivered on Isometric | Retired on Isometric |
|---|---|---|---|---|---|---|---|---|
| 2026 so far | 73 | 6,462,577 | 2,399,602 | 4,062,975 | 37% | US$522,000 on 3 | 124,719 | 35,824 |
| 2025 | 102 | 29,228,693 | 26,647,500 | 2,581,193 | 91% | US$279.6M on 10 | 38,370 | 14,778 |
| 2024 | 96 | 7,187,605 | 5,432,700 | 1,754,905 | 76% | US$368.4M on 19 | 12,049 | 3,945 |
| 2023 | 46 | 7,494,322 | 3,144,000 | 4,350,322 | 42% | US$157.3M on 5 | 500 | – |
| 2022 | 13 | 4,540 | 0 | 4,540 | 0% | – | – | – |
| 2021 | 2 | 0 | 0 | 0 | – | US$2M on 1 | – | – |
Source: Isometric Registry (registry.isometric.com) · checked 14 Nov 2026
Engineered and durable pathways, firm tonnes
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How we count
- Each deal counts once, in the year it was announced, whenever its tonnes are due to be delivered.
- Firm commitments only. Options and letters of intent are counted as deals but add no tonnes.
- Where a deal states a range, the upper end counts. 89 firm deals state no volume and add nothing.
- Forests and soils (afforestation, forest management, soil carbon and blue carbon) are left out here.
- Disclosed value is the price or contract value the announcement states. Most deals state none, so it is the value of the deals counted beside it, not of the market.
- Delivered and retired are what the Isometric Registry records in that year. They are a separate measure, never added to contracted tonnes, and other registries are not counted.
- Only deals that were announced publicly and that we have found are counted.
Figures others have published
Other trackers count differently, so their totals differ from ours. These are their figures, in their words, linked to where they said them. We do not adjust them or ours to match.
Every deal behind these figures is in the Deal Book, by buyer and by supplier.