Ebb Carbon
Ebb Carbon is a private climate technology company that uses electrochemical ocean alkalinity enhancement to convert desalination brine into permanent CO2 removal, additional freshwater, and industrial chemicals, serving enterprise carbon-credit buyers (Microsoft, Google, Stripe) and desalination plant operators, most notably the Saudi Water Authority.
- Company typePrivate
- Founded2020
- HeadquartersSouth San Francisco, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Ebb Carbon does
Ebb Carbon is a private climate technology company founded in 2020 and headquartered in South San Francisco that uses electrochemical ocean alkalinity enhancement (OAE) via bipolar electrodialysis (BPED) to convert seawater and, primarily, desalination brine into three output streams: additional freshwater, permanent carbon dioxide removal, and industrial chemical co-products (hydrochloric acid and sodium hydroxide). The company's modular membrane stack systems integrate directly into existing desalination plant operations, treating brine before discharge and enabling claimed performance improvements of approximately 10% higher freshwater yield, 15% lower electricity use, and over 50% higher plant profit margins. The technology targets atmospheric CO2 drawdown through enhanced ocean alkalinity, with claimed durability exceeding 10,000 years based on National Research Council standards for electrochemical OAE. Validation has been generated through a multi-year deployment at the DOE's Pacific Northwest National Laboratory (PNNL) in Sequim, Washington, Project Macoma field operations in Port Angeles, Washington, peer-reviewed publications in Frontiers journals, and the first-ever NPDES permit issued for a marine CDR project under the Clean Water Act.
Ebb Carbon operates a B2B enterprise sales motion targeting two primary customer segments. The first is large-scale desalination plant operators (anchored by a flagship partnership with the Saudi Water Authority, the world's largest desalination operator), where Ebb's system is integrated into existing infrastructure to deliver operational efficiency gains and revenue-sharing economics. The second is corporate carbon credit buyers, where Ebb sells verified, permanent CO2 removal credits through long-term multi-year contracts to technology and sustainability-focused enterprises including Stripe (first customer, $1.5M commitment in 2021), Microsoft (up to 350,000 tonnes over 10 years, the largest marine CDR commitment to date), and Google (3,500-tonne pre-purchase tied to Saudi operations). Pricing is outcome-based and negotiated per project; the company states expected costs below $100 per tonne of CO2 at scale, with no public pricing list. The company has raised approximately $23M across seed, Series A, and a 2023 round from climate-focused investors including Prelude Ventures, Evok Innovations, Congruent Ventures, Incite, Grantham Environmental Trust, and Elemental Impact. Recognition includes the Global Cleantech 100 (2025), XPRIZE Carbon Removal finalist status, and DOE Carbon Removal Purchase Prize semi-finalist status.
Ebb Carbon's GTM is enterprise-direct and partnership-driven, with no self-service, retail, or digital channels. Distribution occurs exclusively through strategic deals with industrial operators and corporate offtakers, complemented by scientific publications, regulatory engagement, and selective participation in climate conferences and policy testimony (CEO testified before the U.S. House Committee on Science, Space, and Technology). The company maintains an active R&D footprint in Sequim and Port Angeles, Washington, with operational sites linked to PNNL and tribal partnerships (Lower Elwha Klallam Tribe) on ecological safety studies, including salmon exposure testing relevant to commercial shellfish and aquaculture industries on the U.S. West Coast.
Ebb Carbon firmographics
Firmographics- Name
- Ebb Carbon
- Legal name
- Ebb Carbon, Inc.
- Website
- https://ebbcarbon.com
- Company type
- Private
- Founded year
- 2020
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Ebb Carbon is a private climate technology company that uses electrochemical ocean alkalinity enhancement to convert desalination brine into permanent CO2 removal, additional freshwater, and industrial chemicals, serving enterprise carbon-credit buyers (Microsoft, Google, Stripe) and desalination plant operators, most notably the Saudi Water Authority.
- Ownership category
- akta.pro rank
Ebb Carbon industry classification
Industry- Product category
- Marine Carbon Dioxide Removal Technology
- NAICS
- Chemical Manufacturing (325)
- SIC
- Miscellaneous Chemical Products (2890)
- akta.pro primary industry
- Ocean-Based Carbon Removal (Alkalinity Enhancement, Seaweed, Ocean Biomass Sinking) (EUABAFAF)
- akta.pro secondary industries
- Carbon Removal Project Development, Financing & Offtake (Developers, Aggregators, Buyers Clubs) (EUABAFAL), Carbon Removal Credits Trading (DAC, BECCS, Biochar, Mineralization) (EUAGAIAL)
Keywords
Where Ebb Carbon is headquartered
LocationHeadquarters
- HQ city
- South San Francisco
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
Ebb Carbon business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales
Revenue model
- Carbon Removal Credits: Ebb Carbon sells verified carbon dioxide removal credits to corporate buyers (Microsoft, Google, Stripe) through long-term agreements. These credits represent permanent CO2 removal verified through rigorous MRV protocols following ISO standards.
- Desalination Technology Integration: Ebb's technology is integrated into desalination plants to increase freshwater production (demonstrated ~10% increase), reduce electricity use (~15% reduction), and increase profit margins by more than 50% for plant operators. Creates value for desalination partners through operational efficiency gains.
- Industrial Chemical Co-products: The process generates low-cost acid (hydrochloric acid) and caustic soda (sodium hydroxide) from recycled brine, offering more sustainable industrial chemical production that can be used in desalination processes or sold to other industries.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Outcome Based/ Performance | Multi-year contract | Enterprise carbon removal agreements negotiated on a per-project basis with major corporate buyers. |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Ebb Carbon product offering
Product offeringCore offering
Ebb Carbon develops and deploys an electrochemical ocean alkalinity enhancement (OAE) platform that integrates with industrial desalination plants. Using proprietary bipolar electrodialysis (BPED) membrane stack technology, the system converts brine waste into three outputs: recycled filtered brine for increased freshwater recovery, industrial chemical co-products (hydrochloric acid and sodium hydroxide), and alkaline seawater that permanently draws down atmospheric CO2. The company sells verified carbon removal credits to corporate buyers under long-term agreements.
Product overview
Ebb Carbon offers an electrochemical ocean alkalinity enhancement technology platform that transforms industrial brine waste into multiple value streams. The core Ebb Carbon System uses bipolar electrodialysis to process brine into freshwater, permanent carbon removal, and industrial chemical co-products. The technology integrates with desalination plants and is demonstrated through projects like Project Macoma in Port Angeles, WA and the Saudi Water Authority partnership in Jubail, Saudi Arabia. The platform delivers freshwater recovery, carbon dioxide removal via ocean alkalinity enhancement, and sustainable industrial chemical production.
Differentiator
Problem solved
Functional benefit
Products and services
- Ebb Carbon System (Electrochemical OAE Platform) Modular electrochemical ocean alkalinity enhancement (OAE) system using proprietary bipolar electrodialysis (BPED) membrane stack technology. Processes brine or seawater into filtered brine, acid, and base streams to deliver increased freshwater recovery, permanent carbon removal, and industrial chemical co-products. Sold as an integrated technology platform to enterprise desalination operators and sold via carbon removal credit agreements to corporate buyers.
- Desalination Plant Integration Integration of Ebb's electrochemical BPED system with existing desalination plants. Intercepts brine waste and converts it into additional freshwater recovery (~10% yield increase), industrial chemical co-products (HCl and NaOH), and alkaline solution for ocean carbon removal. Demonstrated 15% reduction in electricity use and 50%+ increase in plant profit margins. Designed for large-scale seawater reverse osmosis and thermal desalination operators.
- Verified Carbon Removal Credits Verified, permanent carbon dioxide removal credits sold to corporate buyers under long-term offtake agreements. Credits are verified through rigorous MRV protocols including Isometric's OAE protocol and demonstrate 10,000+ year carbon sequestration durability per National Research Council standards. Sold to enterprise buyers (Microsoft, Google, Stripe) under multi-year contracts.
- Project Macoma (Field Pilot) Ebb Carbon's first field pilot project at the Port of Port Angeles, Washington, demonstrating real-world performance of electrochemical ocean alkalinity enhancement integrated with seawater reverse osmosis desalination. Designed to remove up to 1,000 tonnes of CO2 per year while improving local ocean health and serving as a blueprint for commercial-scale desalination integration.
- Saudi Water Authority (SWA) Deployment Commercial-scale deployment of Ebb's electrochemical OAE technology with the Saudi Water Authority, the world's largest desalination owner/operator. First installation at SWA's Jubail facility in Saudi Arabia, with potential for global rollout across SWA's existing desalination assets enabling up to 85 megatonnes of annual CO2 removal capacity.
Quantifiable outcome
- Increases freshwater production by approximately 10% when integrated with desalination plants
- +6 more outcomes
Companies that use Ebb Carbon
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles2 records
Ebb Carbon technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Ebb Carbon partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core, flagship and minor.
- GooglecorePre-purchase agreement for 3,500 tons of CO2 removal from the atmosphere, with removals generated from Ebb's operations in Saudi Arabia through the SWA partnership. Represents significant validation of integrated deployment model.
- Saudi Water Authority (SWA)flagshipStrategic partnership with world's largest desalination owner/operator. Ebb's system will plug into SWA's Jubail facility to transform brine into additional freshwater, industrial chemicals, and carbon removal. Potential to remove 85 megatonnes CO2 annually when deployed across SWA's existing assets.
- MicrosoftflagshipLandmark carbon dioxide removal agreement to remove up to 350,000 tonnes of CO2 over the next decade - the largest marine CDR commitment to date. Microsoft will use Ebb Carbon's carbon removal credits verified through Isometric's OAE protocol to meet climate commitments.
- Pacific Northwest National Laboratory (PNNL)coreFirst deployment of Ebb's 100-ton CDR system at PNNL's marine lab in Sequim, WA. Collaboration with world-leading experts in ocean health, biogeochemistry, and ocean modeling from PNNL, NOAA, and University of Washington.
- StripecoreFirst customer commitment of $1.5 million for carbon removal credits as part of Stripe's Climate Program. First Ebb Carbon system deployed in 2022 under this agreement.
- Lower Elwha Klallam TribecoreCollaborative partnership on salmon ecological safety studies at Project Macoma. Tribe provided juvenile coho salmon for studies and participated in observation of pulse-exposure testing, ensuring local community priorities were incorporated into project design.
- X (formerly Google X)minorCollaboration with X, the Moonshot Factory, to explore innovative pathways for using the acid co-product from Ebb's ocean alkalinity enhancement process, highlighting potential for additional value creation.
- NOAA Pacific Marine Environmental LaboratorycoreCollaboration with NOAA scientists on ocean modeling and biogeochemistry research to advance understanding of ocean alkalinity enhancement and carbon cycle dynamics.
- IsometriccoreCarbon registry providing the first published OAE protocol for measurement, reporting, and verification of ocean alkalinity enhancement carbon removal credits. Ebb Carbon uses Isometric's protocol for credit deliveries to Microsoft.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
Ebb Carbon competitors and assessment
Company assessmentDirect peers
- Captura: Captura develops electrochemical direct ocean CO2 capture technology, using bipolar electrodialysis conceptually similar to Ebb's BPED approach. Closest direct competitor in the marine electrochemical CDR space with overlapping customers in voluntary carbon markets.
- Planetary Technologies: Planetary Technologies is an ocean alkalinity enhancement company producing magnesium hydroxide for ocean CDR. Competes directly with Ebb in the marine CDR category, pursuing voluntary credit sales to enterprise buyers.
- Vesta: Vesta pursues coastal ocean alkalinity enhancement using olivine and other minerals to capture CO2. Operates in the same marine CDR category with a complementary mineralization-based approach rather than electrochemistry.
Emerging players
- SeaO2 Energy: SeaO2 develops electrochemical ocean carbon removal with a focus on co-locating systems with energy and industrial sources. Early-stage competitor with overlapping technology but smaller deployment footprint than Ebb.
- 44.01: 44.01 accelerates natural CO2 mineralization through olivine dissolution in Oman, focusing on enhanced rock weathering for ocean CDR. Operates in adjacent marine CDR niche with similar project-based credit sales.
- Running Tide: Running Tide uses ocean biomass sinking (kelp) for carbon removal. Adjacent ocean-based CDR approach with similar enterprise buyers (Microsoft, Shopify, Stripe) but different underlying removal mechanism.
- Heirloom Carbon: Heirloom is a direct air capture company using limestone-based DAC technology, signed major offtake agreements with Microsoft. Competes for the same enterprise CDR budget but uses a fundamentally different capture method.
- CarbonCapture Inc. CarbonCapture Inc. develops direct air capture systems with plans to sequester CO2 in geological formations and concrete. Competes in the broader durable CDR category serving the same enterprise buyer segment.
- Cquesta: Cquesta develops ocean CDR via macroalgae cultivation and sinking. Pursues the same voluntary carbon market buyers (Microsoft et al.) but uses a biological rather than electrochemical pathway.
Broad incumbents
- Climeworks: Climeworks is the largest direct air capture operator globally with multiple commercial plants and Microsoft offtake agreements. Sets pricing benchmarks and customer expectations across the broader CDR market relevant to Ebb.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Ebb Carbon social profiles
Digital presenceEbb Carbon financial estimates
Financial estimateRevenue estimate
Valuation estimate
Ebb Carbon leadership team
Management profileNumber of profiles
Profiles3 records
Ebb Carbon funding detail
Funding detailFunding overview
Funding rounds3 records
Investors6 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Ebb Carbon M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Ebb Carbon
What does Ebb Carbon do?
Ebb Carbon develops and deploys an electrochemical ocean alkalinity enhancement (OAE) platform that integrates with industrial desalination plants. Using proprietary bipolar electrodialysis (BPED) membrane stack technology, the system converts brine waste into three outputs: recycled filtered brine for increased freshwater recovery, industrial chemical co-products (hydrochloric acid and sodium hydroxide), and alkaline seawater that permanently draws down atmospheric CO2. The company sells verified carbon removal credits to corporate buyers under long-term agreements.
Is Ebb Carbon a public or private company?
Ebb Carbon is a private company. It is classified as venture growth investor backed and is currently operating.
When was Ebb Carbon founded?
Ebb Carbon was founded in 2020. It employs 11 to 50 people.
Where is Ebb Carbon based?
Ebb Carbon is headquartered in South San Francisco, United States, in the North America region.
How does Ebb Carbon make money?
Three revenue lines are on record. Carbon Removal Credits are the primary driver. The others are desalination Technology Integration and industrial Chemical Co-products.
Who are Ebb Carbon's main competitors?
Direct peers on record are Captura, Planetary Technologies and Vesta. Emerging players are SeaO2 Energy, 44.01, Running Tide, Heirloom Carbon, CarbonCapture Inc. and Cquesta. Climeworks is listed as a broad incumbent.
Does Ebb Carbon have an API?
No public API is recorded for Ebb Carbon.
What industry is Ebb Carbon in?
Ebb Carbon's product category is Marine Carbon Dioxide Removal Technology. Its primary akta.pro industry code is EUABAFAF, Ocean-Based Carbon Removal (Alkalinity Enhancement, Seaweed, Ocean Biomass Sinking), with a secondary code of EUABAFAL, Carbon Removal Project Development, Financing & Offtake (Developers, Aggregators, Buyers Clubs). Its NAICS code is 325 and its SIC code is 2890.