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Brazil’s Mato Grosso state commits to phasing out native wood for boilers from 2034

By Thomson Reuters Jun 9, 2026 | 9:54 AM

By Roberto Samora and Manuela Andreoni

SAO PAULO, June 9 (Reuters) – Brazil’s Mato Grosso state has signed a commitment to eliminate ​the use of firewood from deforested ‌native forests in power-generating boilers, starting in 2034, according to a document seen by Reuters.

• Boilers are used locally to fuel agro-industrial facilities such as ‌corn-based ​ethanol plants.

• The commitment, ⁠signed on Monday, follows ⁠an inquiry into potential illegalities in the use of native firewood to power corn ethanol plants, which are multiplying fast in ​Mato Grosso.

• The Amazon state had about 10 corn ethanol plants last year, ⁠with plans for over ⁠10 more in the coming years, ​according to industry figures.

• Under the pledge, consumption ​of native wood from deforestation must drop ‌to a maximum of 50% by the end of 2030, then 40% by 2031, 30% by 2032, 10% by 2033, and ⁠zero by 2034.

• The state government also must issue a decree within 30 days to expand the ⁠area of ‌planted forests to at least ⁠700,000 hectares (1.73 million acres) by ​2040.

• Companies ‌will be notified within 90 ​days to ⁠take action, with requirements to prove wood legality and implement proportional planting plans from 2027-2029.

(Reporting by Roberto Samora and Manuela Andreoni; Writing by Fernando Cardoso; Editing by Mark Porter and ​David Holmes)