The following is a summary of Mast Reforestation’s project portfolio, including confirmation of its February 12, 2025 transition from project development under the Climate Action Reserve’s (CAR) Climate Forward Reforestation Methodology (v.2.0) to its first project to develop carbon removal credits with Puro.earth’s Terrestrial Storage of Biomass methodology.
In 2025, Mast initiated and successfully completed its first biomass burial project registered with Puro.earth under its Terrestrial Storage of Biomass methodology: Mast Wood Preserve MT1. MT1 achieved credit issuance with all credits sold out. Mast continues to expand its pipeline of additional biomass burial projects. Contact carbon@mastreforest.com for inquiries about the latest volume.
Legacy Reforestation Projects Initiated under the Climate Action Reserve
The following projects were pursued under the Climate Action Reserve’s Climate Forward Program between 2021 and 2024, designed to credit the carbon sequestered by tree growth at reforestation and afforestation sites. This methodology enabled a pathway for project development and credit transactions to finance project development costs (planting supply, operations, surveys, and credit verification). Mast leveraged this pathway to reforest more than 1,700 acres of landscapes across Montana, Oregon, and California that had been devastated by wildfire to the point that natural regeneration was unlikely. Planting occurred at each of the following sites, however just one––Henry Creek––proceeded with carbon project development. Sheep Creek and Feather River Dome did not go on to develop credits and have been closed.
Status summary:
Henry Creek Reforestation Project: Two phases of reforestation complete.
Credit project development status: Phase 1 verification complete, Phase 1 credit issuance complete. Transacted Credit Delivery: Complete.
Sheep Creek Reforestation Project: Two phases of reforestation were completed.
Credit project development status: closed. No credits were generated, issued, or transacted.
Carbon buyers impacted: None.
Closure note: The project was affected by a USDA declared drought. The drought impacted the economic viability of the project. Mast, its project financing partner Carbon Streaming, and the landowners reached a mutual agreement and the project has been brought to a final and orderly close.
Feather River Dome Reforestation Project: Reforestation completed.
Credit project development status: closed. No credits were generated, issued, or transacted.
Carbon buyers impacted: None.
Closure note: Due to a shift in market demand for the credit type, the project was brought to a final and orderly closure as Mast, its project financing partner Carbon Streaming, and the landowners reached a mutual agreement to close the project.
CCI Baccala:
Credit project development status: closed. No credits were generated, issued, or transacted.
Carbon buyers impacted: None.
Closure note: Due to a shift in market demand for the credit type, Mast chose not to proceed with the project despite having funded the grant writing. The Maidu Summit Consortium received a $5,000,000 grant and proceeded with the reforestation without Mast, benefitting from its expenditure of resources.
Reforestation and Landowner Outcome Summaries:
Henry Creek Reforestation Project
Key Project Details:
Reforestation efforts began in 2021 with EFM Investments & Advisory and Mast working together to re-establish native forest cover and help the site recover with greater resilience to future climate stress. Henry Creek was the commercial capabilities demonstration for Mast’s proprietary drone-based enhanced seeding technology. The terrain across the project area includes slopes averaging a 54% grade, some as steep as 78%. The steep slopes exacerbated soil erosion and waterway degradation after the fire and proved hazardous for manual reforestation. Mast used its proprietary drones to deploy thousands of "seed pucks", which were vessels containing native seeds, nutrients, and protection from predators.
This technology enabled rapid, large-scale re-seeding across these challenging areas. Mast deployed more than 1.2 million seeds across nearly 300 acres. In addition, more than 825,000 seedlings were planted across the entire project area using traditional methods over the following two years. To restore the area’s natural diversity of conifers lost in the fire, crews planted a mix of native conifer species, including several firs and other locally adapted species.
Despite the successful re-establishment of seedlings at Henry Creek, Mast has discontinued its drone-based technology in favor of other mechanisms to fund reforestation that address another common barrier: the waste biomass left behind after wildfire that hinders restorative operations.
Sheep Creek Reforestation Project
Key Project Details:
897,114 seedlings of three species were planted at the Sheep Creek property between 2023 and 2024. Mast anticipated dry, harsh conditions in our multi-year replanting prescription, but unfortunately seedling growth and survival rates were impacted by a nationally declared drought disaster affecting Cascade County, MT, delaying the expected project development timeline. The project’s economics were impacted and hindered the project from proceeding. No credits were developed, issued, or sold in advance. Mast, its project financing partner Carbon Streaming, and the landowner, came to a mutual agreement to close the project in 2025.
While the project did not proceed to develop credits, the landowner received more than $1,000,000 in reforestation services, seedling planting, removal of fire-killed trees and site preparation that will allow future plantings, and improved roadwork to allow planter access. Mast and its partners provided these services free of charge, with no landowner commitments or obligations.
Feather River Dome Reforestation Project
47,617 seedlings of three species were planted at the Feather River Dome property in 2024.
Seedling growth outperformed expectations as surveyed in 2024, however, due to a shift in market demand for the credit type, Mast, its project financing partner, and the landowners reached a mutual agreement to close the project.
While the project did not proceed, the landowner received more than $500,000 in reforestation services which included planting, site preparation that will allow future plantings, and improved roadwork to allow planter access, with no commitments or obligations.
Legal Update
In a 2024 constructive discharge lawsuit, a former employee alleged that Mast overstated the value of carbon credits tied to a legacy reforestation project. These credits did not involve biomass burial. The Sheep Creek project referenced in the lawsuit did not generate, issue, or sell carbon credits. Thereafter, the former employee was associated with launching a startup competitive to Mast during the time of the lawsuit. In December of 2025, the former employee submitted a request to dismiss the lawsuit, which was granted by a judge. As a result, the matter is now fully resolved.
Mast Business Model Transition 2025
As of its February 12, 2025 announcement, Mast has transitioned its operational model for the development of carbon removal credits via biomass burial.
Throughout its ten year history, Mast has been on a mission to make reforestation scalable to mitigate the worst effects of climate change. This has guided the company through a series of evolutions and advancements that began as Mast developed and operated state-of-the-art heavy-lift drone swarms as DroneSeed. In 2021 and 2022, Mast vertically integrated as it acquired Silvaseed and Cal Forest nurseries to expand its capabilities to provide seed and seedlings at greater scale. In 2025, we turned our focus to address the largest remaining barrier to successful reforestation: funding. Mast’s MT1 project has turned the most expensive part of a reforestation project--the removal of the woody waste biomass left behind after severe fire--and transformed it into a source of revenue generating carbon credits from the biomass burial that pay for reforestation.