Vaulted Deep, a waste management company turning excess organic material into permanent carbon removal, announced a new offtake agreement with Microsoft. Under the deal, Vaulted will deliver up to 4.9 million tons of durable carbon dioxide removal over 12 years through its waste management infrastructure. The agreement runs through 2038 and will allow Vaulted to rapidly expand its proven approach鈥攁lready permitted, operating, and delivering measurable results鈥攖o new sites across the U.S.
Vaulted removes carbon by storing organic waste that contains atmospheric CO鈧� deep underground. The company partners with municipalities, industrial operators, and agricultural producers to manage their organic waste that can’t be reused or safely applied to land. These waste streams include sludgy materials like biosolids, manure, paper sludge, and food and agricultural residues. Vaulted uses deep well injection to store the waste in stable geologic formations sealed by impermeable rock layers thousands of feet underground. This approach permanently removes carbon, reduces methane emissions, and helps keep trace contaminants like PFAS out of local environments.
“As carbon removal moves beyond pilots and prototypes, there is growing demand for solutions that can scale safely and address real-world problems,” said Julia Reichelstein, co-founder and CEO of Vaulted Deep. “Vaulted offers a dual solution: it meets urgent waste management needs and drives measurable climate and public health improvements. This agreement reflects a broader shift in how carbon removal is being deployed. It is no longer limited to emerging technologies but is increasingly delivered through large-scale existing infrastructure with novel applications.”
To date, Vaulted has removed nearly 18,000 tonnes of CO鈧� and diverted more than 69,000 tonnes of organic waste from surface application, landfilling, and incineration. The company’s methodology is certified by carbon registry Isometric, ensuring over 1,000-years of durability and that each credit reflects a scientifically validated tonne of permanent carbon removal.
“Vaulted Deep provides a differentiated, scalable approach to permanent carbon removal with low technology risk,” said Brian Marrs, Senior Director of Energy and Carbon Removal at Microsoft. “Its work delivers immediate climate benefits while stimulating local economies and addresses long-standing environmental challenges that communities face every day. We support this solution as part of our broader effort to accelerate durable, high-integrity carbon removal.”