Mast Reforestation, a company specializing in post-wildfire reforestation, has secured $25 million in Series B funding to expand its efforts into biomass burial—also known as Biomass Carbon Removal & Storage (BiCRS). The round was co-led by Pulse Fund and Social Capital, with additional participation from Seven Seven Six and other investors. The funds will help scale Mast’s work in restoring forests lost to wildfires and integrating durable carbon removal solutions.
The company’s first biomass burial project, Mast Wood Preserve MT1, is set to launch in Montana. The project involves the burial of unmerchantable, fire-killed trees that would otherwise release carbon dioxide if burned or left to decay. In addition to removing 30,000 tonnes of carbon, the initiative will restore 900 acres of forestland that suffered severe damage in the 2021 Poverty Flats Fire.
Mast has submitted the project for a BeZero rating and is undergoing registration and verification with Puro.earth to ensure credibility in the carbon market. The project’s burial operations are slated to begin in 2025, with credits available for presale now.
After a wildfire, landowners are left with hazardous landscapes and limited options for reforestation. Many resort to pile burning, which worsens air quality and reintroduces carbon into the atmosphere. The MT1 project provides a sustainable alternative by sequestering carbon for over 100 years, using a geotechnically designed, oxygen-limited chamber that prevents decomposition.
Montana alone has 2.3 million tonnes of dead trees from recent wildfires, demonstrating the potential scale of Mast’s solution. The company ensures strict environmental monitoring and follows conservative accounting standards to validate the permanence of carbon removal.
With this new funding, Mast plans to scale its biomass burial projects across the Western U.S. while continuing its core reforestation operations. The company’s process includes the removal of fire-damaged trees, followed by the restoration of native species that are adapted to each project’s unique elevation and climate.
According to Grant Canary, CEO of Mast Reforestation, the initiative will also help reduce future wildfire risks by removing hazardous fuel sources while ensuring that new forests grow stronger and more resilient: “By burying this biomass, we lock away additional carbon, clear the way for new seedlings to thrive, and reduce the risk of these trees fueling future wildfires.”
The funding round saw participation from several high-profile investors, including Elemental Impact, Spero Ventures, Thistledown Capital, and Resilience Reserve. Tesla co-founder Marc Tarpenning has also joined as a board observer. Other returning investors include Gaingels, Climate Avengers, Climate Capital, and Techstars alumni.
"I don't believe in every carbon credit, but I believe in the work Mast is doing," said Chamath Palihapitiya, Founder and CEO at Social Capital. "In a market full of uncertainty, Mast's projects deliver real, measurable impact."
Mast has been active in carbon-financed reforestation since 2020, working with buyers such as Shopify and TIME CO2.
