Mantel is developing the first molten-salt based carbon capture technology. Our molten borates are designed to operate at the high temperatures found inside boilers, kilns, and furnaces – enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industry to reduce emissions - and even achieve net-negative emissions. By solving for efficiency Mantel can reduce energy losses by more than 60% and cut costs in half, unlocking carbon capture’s role in reaching global net zero.
Location: United States
Employees: 1-10
Total raised: $50M
Founded date: 2022
Founders name: Sean Robertson
Founders Related Locations: Haiti, Centre, Hinche; United States, Massachusetts, Boston
Investors 2
| Date | Name | Website |
| - | Engine Ven... | enginevent... |
| - | New Climat... | newclimate... |
Funding Rounds 3
| Date | Series | Amount | Investors |
| 25.08.2026 | - | $18M | - |
| 07.09.2024 | Series A | $30M | - |
| 23.08.2022 | - | $2M | - |
Persons 5
| Date | First Name | Last Name | Title | Location | |||
| - | Danielle | Colson | Chief Oper... | linkedin.c... | - | d*********... | - |
| - | Ralph | Wiser | Director o... | linkedin.c... | - | r***h@mant... | - |
| - | - | - | Co-founder... | linkedin.c... | - | - | - |
| - | Sean | Robertson | Co-founder... | linkedin.c... | - | s**n@mante... | - |
| - | Kelsey | Shakin | Operations... | linkedin.c... | - | k*********... | - |
Mentions in press and media 11
| Date | Title | Description |
| 26.08.2026 | Mantel Fuels Industrial Decarbonization with $50 Million Capital Infusion | Mantel secures $18M, pushing total funding to $50M. This capital accelerates commercial deployment of its molten-borate carbon capture technology. The system cuts energy loss by 97%. It operates at less than half the industry cost. New fund... |
| 25.08.2026 | Mantel Raises $18 Million, Bringing Total Funding To $50 Million As Carbon Capture Projects Move Toward Commercial Deployment | Mantel has raised $18 million in strategic financing from Constellation Technology Ventures and Azimut Investments, along with existing investors, bringing total funding for the carbon capture company to $50 million. The capital will suppor... |
| 25.08.2026 | Mantel Receives $18M Investment | Mantel, a Cambridge, MA-based company leveraging a molten-borate carbon capture technology, received a strategic investment of $18M. Backers included Constellation Technology Ventures (CTV), Azimut Investments, and existing investors. The i... |
| 25.08.2026 | Itoflow Raises $2.5M in Pre-Seed Funding | Itoflow, a London, UK-based provider of an AI-native systematic portfolio management platform, raised $2.5M in Pre-Seed funding. The round was led by Balderton Capital with participation from Barney Hussey-Yeo and others. The company intend... |
| 07.09.2024 | Mantel: Carbon Capture Company Closes $30 Million (Series A) | Mantel Capture, a technology provider of a carbon capture system using molten borates, announced it has raised $30 million in Series A funding co-led by Shell Ventures and Eni Next. And additional participating investors include Engine Vent... |
| 06.09.2024 | Mantel Raises $30M Series A Funding Round | BOSTON, MA, Mantel Capture, the technology provider of a carbon capture system using molten borates, has raised $30 million in Series A funding. >> Click here for more funding data on Mantel Capture >> To export Mantel Capture ... |
| 05.09.2024 | Mantel Raises $30M in Series A Funding | Mantel, a Boston, MA-based technology provider of a carbon capture system using molten borates, raised $30M in Series A funding. The round was led by Shell Ventures and Eni Next. Additional participating investors included Engine Ventures, ... |
| 23.08.2022 | Mantel Raises $2M in Funding | Mantel, a Boston, MA-based developer of a novel solution to carbon capture, rasied $2m in funding. The round was led by The Engine, the venture firm spun out of MIT that invests in early-stage Tough Tech companies, with participation from N... |
| 23.08.2022 | MIT Spinout Mantel Launches With $2M From VC Firm The Engine Jobs at Mantel | Mantel co-founders. | Photo: Mantel As temperatures reach record highs nationwide and climate change becomes the forefront of discussion, the tech ecosystem is looking for ways to combat the amount of carbon emissions in the air. By default... |
| - | Mantel | “Mantel is developing the material solution to carbon capture” |
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