What CREW Carbon does

CREW Carbon is a water-technology and carbon-removal company spun out of Yale University in 2022 that permanently stores atmospheric and biogenic CO2 by dosing locally-sourced alkaline minerals — primarily calcium carbonate (limestone) — into existing wastewater treatment reactors. Operating out of Brooklyn, NY and New Haven, CT, the company sells its patented process intensification technology, branded as Alkalinity-Enhanced Mode (AEM), to municipal and industrial wastewater utilities, while monetizing the resulting verified carbon removal credits through long-term offtake agreements with corporate buyers.

The technology stack comprises three integrated hardware modules — primary inlet sensor arrays, a mineral storage and dosing system, and secondary outlet sensor arrays — that feed CREW's proprietary closed-system MRV (Measurement, Reporting & Verification) capability. This closed-system architecture enables real-time, in-process quantification of CO2 removal rather than the open-system estimation methods used in competing enhanced weathering approaches. CREW's approach has been independently verified under Isometric's WAE (Wastewater Alkalinity Enhancement) protocol and reviewed by a 50+ scientist panel convened by Frontier. Documented utility-side outcomes include 50–70% Sludge Volume Index (SVI) reduction, prevention of filamentous bulking, replacement of hazardous chemicals (sodium hydroxide, ferric chloride, sodium hypochlorite, sodium bisulfite) with locally-sourced minerals, and — at HRSD — the potential deferral of $350M in planned capital upgrades.

CREW operates a hybrid, outcome-based revenue model. On the utility side, it provides mineral feedstock, dosing infrastructure, and operational services under multi-year engagements and municipal RFPs. On the carbon side, it sells verified CO2 removal credits under multi-year offtake agreements, with $33M+ already contracted through Frontier, ClimeFi, and direct buyers including JP Morgan, Google, Autodesk, Stripe, H&M, Workday, and Salesforce. Go-to-market is enterprise field sales — Business Development Managers travel 50–75% of the time to engage utilities directly — supported by PR-driven earned media (WSJ, Reuters, Boston Globe) and industry ecosystem participation (ImagineH2O, Carbon Removal Alliance, Carbon to Sea Initiative). Since launching commercial operations in 2024, the company has deployed at nearly 10 wastewater facilities across the U.S. and Europe, captured 2,000+ tons of CO2, and closed an oversubscribed $25M Series A in May 2026 led by Burnt Island Ventures.

Name

CREW Carbon

Legal name

CREW Carbon, Inc.

Website

https://crewcarbon.com

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

1–10 employees

Short description

CREW Carbon is a Yale spinout that permanently removes CO2 by dosing calcium carbonate into existing wastewater treatment reactors, selling patented process intensification technology to municipal utilities while monetizing verified carbon removal credits via long-term offtake agreements with enterprise buyers.

Ownership category

akta.pro rank

Product category

Carbon Dioxide Removal Services

akta.pro primary industry

Carbon Removal Project Development, Financing & Offtake (Developers, Aggregators, Buyers Clubs) (EUABAFAL)

akta.pro secondary industries

Regenerative Agriculture & Soil Organic Carbon (SOC) (EUABABAE), Carbon Removal Measurement, Monitoring & Verification (Removal MRV & Durability) (EUABAFAK), Carbon Removal Credits Trading (DAC, BECCS, Biochar, Mineralization) (EUAGAIAL), Industrial Carbon Capture Integration & Retrofit Engineering (Capture-Ready, Balance-of-Plant) (EUABAJAJ)

Keywords

• Enhanced weathering carbon removal
• Wastewater treatment optimization
• Carbon dioxide removal credits
• Alkalinity enhancement systems
• Process intensification technology

Headquarters

HQ city

Hamden

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Technology or R&D, Supply Chain, Personnel, Marketing or Sales, Operations

Revenue model

1. Carbon removal credit offtake agreements: Long-term offtake agreements (typically multi-year contracts) with corporate carbon removal buyers where buyers pre-purchase verified CO2 removal credits. Verified carbon removal delivered to corporations including JP Morgan, Google, Autodesk, Stripe, and others through Frontier. CREW has secured $33M+ in offtake agreements. Pricing is outcome-based per ton of CO2 permanently removed and verified.
2. Wastewater utility services and mineral supply: Service engagement with municipal and industrial wastewater utilities where CREW supplies, doses, and manages the calcium carbonate mineral feedstock and operational system. Service is enabled by long-term partnerships and RFPs; one utility customer is considering deferring $350 million in planned capital upgrades due to operational improvements. Logistics involves handling loose bulk minerals scaling from tens of thousands to over 100,000 tons annually.
3. Government and philanthropic grants: Non-dilutive funding from government programs and philanthropic sources. Recent awards include $2.3M from the Colorado Energy Office (Clean Air Program) and $6M in total grant/non-dilutive funding bundled in the Series A round. Selected by U.S. Department of Energy in 2024 as 1 of 24 companies for the Carbon Dioxide Removal Purchase Pilot Prize.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

CREW Carbon operates a patented process intensification platform that doses locally-sourced alkaline minerals (primarily calcium carbonate/limestone) into existing wastewater treatment reactors to optimize pH and alkalinity, permanently converting atmospheric and biogenic CO2 into stable dissolved bicarbonate ions. The platform integrates inlet and outlet sensor arrays with proprietary MRV (Measurement, Reporting & Verification) capabilities, and is deployed at municipal wastewater utilities where it improves treatment performance, reduces chemical usage, and generates verified carbon removal credits sold to corporate buyers under long-term offtake agreements.

Product overview

CREW Carbon offers a single unified process intensification platform for wastewater treatment operators, centered on its patented Alkalinity-Enhanced Mode (AEM) which is delivered through three integrated hardware modules — the CREW Primary Sensor and Inlet Monitoring system, the CREW Mineral Storage and Dosing System, and the CREW Secondary Sensor and Outlet Monitoring system. These modules feed data into CREW's proprietary MRV (Measurement, Reporting & Verification) capability and the in-development CREW Scalable Analytics Platform, which together provide real-time dosing decisions, operational optimization, and high-confidence carbon removal quantification. The platform is offered as a core product to wastewater operators and is also paired with partner technologies such as HRSD's inDENSE® (the CREW x HRSD inDENSE Combined Solution). Carbon removal credits verified through CREW's MRV are sold to corporate buyers.

Differentiator

Problem solved

Functional benefit

Products and services

• CREW Process Intensification Platform CREW's core wastewater alkalinity enhancement platform that integrates into existing biological treatment reactors to optimize pH and alkalinity, improve treatment performance, reduce chemical usage, and permanently convert CO2 into dissolved bicarbonate ions for permanent carbon removal. Offered to municipal wastewater utilities under long-term partnerships.
• CREW Scalable Analytics Platform Scalable software/analytics platform for wastewater treatment facilities delivering actionable operational insights and process optimization capabilities, driven by sensor data, biogeochemical modeling, and process engineering inputs.
• CREW x HRSD inDENSE Combined Solution Partner-integrated offering pairing CREW's calcium carbonate dosing process intensification with HRSD's patented inDENSE hydrocyclone biomass separation technology for biological nitrogen and phosphorus removal at HRSD's Norfolk, Virginia wastewater facilities.
• Verified Carbon Removal Credits Permanent, verified carbon dioxide removal credits generated by CREW's process intensification platform and sold to corporate buyers (JP Morgan, Google, Autodesk, Stripe, H&M Group, Workday, Salesforce) under long-term multi-year offtake agreements through Frontier and ClimeFi. Pricing is outcome-based per ton of CO2 permanently removed and verified.

Quantifiable outcome

• Deferred $350 million in planned capital upgrades for one utility customer (HRSD Virginia Initiative Plant)
• +5 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability2 records

Feature6 records

Partnerships

14 partnerships are on record, tiered flagship utility customer — long-term multi-facility partnership., flagship carbon buyer / advanced market commitment., long-term carbon removal offtake partner., foundational — technology originated at yale., scientific collaborator and advisor institution., scientific collaborator institution., scientific collaborator / national lab partner., government program partner (cdr purchase pilot prize)., industry coalition membership., water sector accelerator partner., climate tech ecosystem connection., wastewater operator partner. and carbon registry/standards partner..

• Hampton Roads Sanitation District (HRSD)flagship utility customer — long-term multi-facility partnership.Strategic or Co-development PartnerLong-term partnership to deploy CREW's process intensification solution at two Norfolk-based wastewater treatment facilities (Virginia Initiative Treatment Plant and Army Base Treatment Plant). Follows a yearlong testing phase demonstrating improvements in biological nutrient removal. Combined with HRSD's patented inDENSE technology. Quote from CTO Dr. Charles Bott.
• Frontier (Stripe, Alphabet, Shopify, Meta, McKinsey)flagship carbon buyer / advanced market commitment.Strategic or Co-development PartnerAdvanced market commitment to accelerate carbon removal. Verified CREW's process with a review panel of 50+ scientists, leading to a $500K pre-purchase agreement in 2022. Source of long-term offtake agreements.
• ClimeFilong-term carbon removal offtake partner.Strategic or Co-development PartnerCarbon removal buyer partner; CREW has signed a long-term offtake agreement with ClimeFi.
• Yale Universityfoundational — technology originated at yale.Strategic or Co-development PartnerYale University spinout. CREW's enhanced weathering technology was developed at Yale, with ongoing scientific collaborators including Prof. Noah Planavsky (Co-Founder & Scientific Advisor) in Yale's Department of Earth and Planetary Sciences.
• Georgia Techscientific collaborator and advisor institution.Strategic or Co-development PartnerDisplayed as a scientific collaborator/advisor institution on the CREW website partner logos section.
• Texas A&M Universityscientific collaborator institution.Strategic or Co-development PartnerDisplayed as a scientific collaborator/advisor institution on the CREW website partner logos section.
• Pacific Northwest National Laboratory (PNNL)scientific collaborator / national lab partner.Strategic or Co-development PartnerDisplayed as a scientific collaborator/advisor institution on the CREW website partner logos section.
• U.S. Department of Energy (DOE)government program partner (cdr purchase pilot prize).Strategic or Co-development PartnerCREW was selected as 1 of 24 companies by DOE in 2024 for the Carbon Dioxide Removal Purchase Pilot Prize Phase 1, as a potential supplier of high-quality carbon credits to the federal government. DOE logo displayed on partner page.
• Carbon Removal Allianceindustry coalition membership.GTM or Marketing PartnerMember/affiliate organization; logo displayed in partners section of CREW website.
• Carbon to Sea Initiativeindustry coalition membership.Strategic or Co-development PartnerDisplayed as a partner/collaborator on CREW website. Aligned with mission of advancing ocean-based carbon removal research.
• ImagineH2Owater sector accelerator partner.Strategic or Co-development PartnerCREW selected by ImagineH2O, the leading water sector innovation accelerator, as part of the 2024 cohort. Logo displayed on partners page.
• Watershedclimate tech ecosystem connection.Technology or IntegrationLogo displayed in partners section. Watershed is a climate platform/enterprise carbon management company.
• Greater New Haven Water Pollution Control Authority (GNHWPCA)wastewater operator partner.Strategic or Co-development PartnerWastewater operator partner logo displayed on the wastewater operator partner section of CREW website.
• Isometriccarbon registry/standards partner.Strategic or Co-development PartnerCREW's approach was verified through the WAE (Wastewater Alkalinity Enhancement) protocol developed, published, and reviewed by Isometric in 2024. Registry partnership for carbon credit verification.

Scale indicators10 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• 44.01: 44.01 is an Oman-based enhanced weathering carbon removal company that mineralizes CO2 in peridotite formations. It is the closest direct competitor to CREW in applying enhanced weathering chemistry for permanent CDR, though operating in geological rather than wastewater media.
• Lithos Carbon: Lithos Carbon deploys enhanced rock weathering on agricultural land to capture CO2. It is a direct enhanced-weathering peer with similar science-driven MRV philosophy but applies it to soils rather than wastewater reactors.
• Eion Carbon: Eion Carbon applies enhanced rock weathering to olivite spread on farmland, generating verified CDR credits. It competes with CREW in the broader enhanced weathering category with overlapping buyer relationships in the voluntary carbon market.

Emerging players

• Captura: Captura is an emerging ocean-based CDR company using electrochemical processes to extract CO2 from seawater. It is an emerging player in the broader CDR category with an alternative deployment pathway that competes for corporate offtake dollars.
• C2X: C2X is commercializing ocean alkalinity enhancement for CDR, with overlap in approach to CREW's alkalinity dosing concept. It is an emerging player competing for similar voluntary carbon market demand.
• Cambrian Innovation: Cambrian Innovation is an emerging water-tech company that combines wastewater treatment with biogas and resource recovery. It is a partial overlap peer addressing municipal and industrial wastewater operators with adjacent clean technology value propositions.

Broad incumbents

• Heirloom Carbon: Heirloom is a leading DAC company using limestone-based DAC technology. While a different removal modality, it is a broad incumbent in the high-quality CDR category competing for the same corporate offtake pool.
• CarbonCure Technologies: CarbonCure injects captured CO2 into concrete for permanent mineralization. It is a broad incumbent in the carbon utilization and removal space with an established industrial deployment base competing for climate capital.
• Veolia: Veolia is a global water and wastewater services giant with extensive relationships with municipal utilities. It is a broad incumbent that could either partner with or compete against CREW at scale within its existing customer base.

Others

• Watershed: Watershed is an enterprise carbon management platform that helps companies measure, reduce, and remove emissions. It is an ecosystem partner already displayed on CREW's partner page and represents an adjacent channel for distributing CDR credits to corporate buyers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/crew-carbon

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds3 records

Investors19 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CREW Carbon