Mast Reforestation has sold every carbon removal credit from its flagship Montana biomass burial project less than six weeks after issuance, with Bain & Company and BMO Financial Group joining as the latest buyers of a credit type that is drawing growing interest from corporate buyers seeking durable, high-integrity offsets.
The 4,277 credits from Mast Wood Preserve MT1 were issued in January 2026 under the Puro.earth registry—the largest issuance to date under Puro.earth’s Terrestrial Storage of Biomass methodology—following a nine-month development timeline from excavation to issuance, one of the fastest for any carbon removal project globally.
Earlier buyers included Royal Bank of Canada and CNaught, among others. MT1 recently received an A rating from BeZero Carbon; fewer than 8% of all non-nature-based carbon removal projects reach that threshold, Mast Reforestation noted.
“High-integrity carbon removal is an important part of Bain’s strategy to address residual emissions while helping scale the climate solutions the world needs,” said Sam Israelit at Bain & Company. “Mast’s MT1 project stood out for combining durable carbon removal with meaningful post-wildfire recovery.”
The project buried more than 10 million pounds of wildfire-killed trees in an engineered underground chamber, locking away carbon that would otherwise have been released through pile-burning—a standard post-fire management practice.
Carbon storage is certified for 100 years with monitoring guaranteed under Mast’s monitoring, reporting, and verification (MRV) plan.
Proceeds from credit sales are now funding restoration at the site, where planting of more than 6,000 native conifer seedlings began April 15—the first Biomass Carbon Removal and Storage (BiCRS) project to use carbon revenues to directly finance post-wildfire reforestation.
Mast CEO Grant Canary said the sell-out validates biomass burial as investable infrastructure, describing it as “predictable delivery, rigorous monitoring, and a direct funding source for ecosystem recovery.”
The company is now targeting a second project for credit issuance in 2027, with a longer-term goal of deploying 150,000 tonnes annually by 2030.
Read more: Mast Reforestation Completes Its Montana-Based BiCRS Project
