United States-based bio-waste carbon removal provider Vaulted Deep has secured a $35 million commercial debt facility provided by Italian investment bank Mediobanca Group and arranged by United Kingdom-based energy transition specialist CFP Energy. The financing structure is underwritten directly by Vaulted Deep’s long-term carbon removal purchase commitments with Frontier Climate buyers—including Google and Stripe—along with waste servicing contracts. Representing the largest publicly disclosed commercial debt deal for durable carbon removal backed by multi-year offtake agreements in the United States, the transaction adds to $56 million previously raised by the company through equity investments and competition awards.

The capital arrangement targets a critical structural bottleneck in the broader biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More carbon removal and storage sector: the reliance on dilutive equity financing to scale capital-intensive physical infrastructure. Traditional waste management operators across the United States face increasingly constrained disposal options for organic waste, agricultural byproducts, and industrial sludge. Meanwhile, carbon removal developers struggle to transition from early-stage demonstration projects to commercial-scale deployment due to a lack of debt financing from mainstream institutional lenders, who typically require bankable, revenue-backed underlying contracts before extending capital for infrastructure assets.

To resolve this financing constraint, Vaulted Deep leveraged its long-term revenue streams from corporate carbon removal offtakes to unlock traditional bank debt. Vaulted Deep processes carbon-dense organic waste streams into a slurry and injects the material into deep geological formations for permanent subsurface storage. The $35 million facility will fund the nationwide expansion of Vaulted Deep’s subsurface disposal wells and advance project deployment using its proprietary, artificial intelligence-powered site identification and permitting development platform, building on active operational sites in California and Kansas.

The debt facility enables Vaulted Deep to accelerate operational scaling and increase carbon removal volumes beyond the 20,000 tonnes delivered to Frontier buyers in the first half of 2026. By utilizing long-term buyer agreements to secure non-dilutive commercial debt from mainstream financial institutions, the deal establishes a viable capital model for scaling biomass carbon removal infrastructure. Furthermore, it demonstrates how bankable revenue contracts can bridge the transition from early market commitments to institutional project finance across the carbon dioxide removal sector.