What Aptamus Carbon Solutions does

Aptamus Carbon Solutions LLC is a Tampa, Florida-based infrastructure developer that designs marine logistics systems for the transport and permanent sequestration of captured carbon dioxide. The company was established as a wholly-owned subsidiary of Overseas Shipholding Group (OSG), itself acquired by Saltchuk in July 2024, and operates with 1-10 employees. Its core proposition addresses large CO2 emitters in regions like Florida where geology is unsuitable for local sequestration and pipeline alternatives are not cost-effective, offering water-based transport to permanent storage sites in Louisiana and Texas.

The company's product portfolio comprises four interconnected offerings: T-RICH (Tampa Regional Intermodal Carbon Hub), a planned 10-acre hub at Port Tampa Bay designed to receive, store, and process 2,000,000 metric tons of CO2 per year (expandable to 8,000,000 mt/year) via pipeline, rail, truck, and ship; COAST20, a first-of-its-kind U.S. marine CO2 transportation system centered on a 20,000-ton Jones Act-compliant LCO2 vessel; OCCS, an onboard carbon capture system using Hollow Fiber Membrane Contactor (HFMC) technology designed for retrofit onto OSG's Jones Act MR tankers; and a consulting practice covering ship/barge conceptual design, terminal layouts, route evaluation, throughput and Class 5 cost estimating, and regulatory/risk assessments.

Aptamus generates revenue through planned transaction fees on marine CO2 transportation and storage services, plus professional consulting fees. The company is pre-commercial, with project advancement funded primarily by non-dilutive U.S. government grants (a $320,000 DOE grant for T-RICH pre-FEED, a $2.5 million DOE grant for COAST20 FEED, and MARAD funding for OCCS feasibility). Go-to-market is enterprise field sales targeting large CO2 emitters and carbon capture project developers, supported by partnerships with Port Tampa Bay, LBC Tank Terminals, Aker Solutions/Entr, Ionada Carbon Solutions, and ABS for vessel certification.

Name

Aptamus Carbon Solutions

Legal name

Aptamus Carbon Solutions LLC

Website

https://aptamus.com

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

Aptamus Carbon Solutions is a Tampa-based infrastructure developer and OSG subsidiary that designs marine CO2 transport and storage systems, including the T-RICH intermodal hub at Port Tampa Bay, the COAST20 LCO2 vessel system, and onboard carbon capture technology, serving large industrial CO2 emitters in Florida and the U.S. Gulf Coast.

Ownership category

akta.pro rank

Headquarters

HQ city

Tampa

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Technology or R&D, Personnel, Supply Chain, Operations

Revenue model

1. Marine CO2 Transportation Services: Full-service solution for disposal of captured CO2 by transporting it in specially designed CO2 ships to long-term storage locations in Louisiana and Texas. Revenue generated from fees for transporting and storing liquefied CO2 for carbon emitters.
2. Carbon Consulting Services: Consulting services for carbon waste storage and transportation including marine ship/barge conceptual designs, terminal layouts, route evaluation, throughput estimating, cost estimating (Class 5), technology evaluation, and regulatory/risk assessments for CO2 capture projects.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Aptamus Carbon Solutions provides marine transportation and storage solutions for captured CO2 through an integrated logistics chain: the T-RICH intermodal hub at Port Tampa Bay receives CO2 via pipeline, rail, truck, and ship; COAST20 Jones Act-compliant liquefied CO2 (LCO2) vessels transport the CO2 to permanent sequestration sites in Louisiana and Texas; OCCS captures CO2 directly onboard commercial tankers using HFMC technology. The company also offers consulting services covering marine ship/barge conceptual designs, terminal layouts, route evaluation, Class 5 cost estimating, technology evaluation, and regulatory/risk assessments for CO2 capture projects.

Product overview

Aptamus Carbon Solutions operates as a maritime carbon transport and storage solutions provider with four interconnected offerings. The core portfolio includes: T-RICH (Tampa Regional Intermodal Carbon Hub), a proposed intermodal hub at Port Tampa Bay for receiving and storing captured CO2; COAST20, the first marine CO2 transportation system in the U.S. featuring 20,000-ton LCO2 vessels; OCCS (Onboard Carbon Capture & Storage), a shipboard carbon capture technology using Hollow Fiber Membrane Contactors; and Consulting Services for CO2 transport and storage project evaluation. Together, these products form an end-to-end carbon capture logistics chain—OCCS captures CO2 directly on vessels, T-RICH provides the storage and processing hub in Florida, and COAST20 enables large-scale maritime transport to sequestration sites in Louisiana and Texas.

Differentiator

Problem solved

Functional benefit

Brands

• T-RICH: Tampa Regional Intermodal Carbon Hub - proposed comprehensive intermodal transportation hub for captured CO2 on the west coast of Florida sited at Port Tampa Bay
• COAST20
• OCCS

Products and services

• T-RICH (Tampa Regional Intermodal Carbon Hub) Proposed comprehensive intermodal transportation hub for captured CO2 located at Port Tampa Bay, designed to receive, store, and process at least 2,000,000 metric tons of CO2 per year (expandable to 8,000,000 mt/year) for large industrial emitters across Florida. Features 30,000 m3 LCO2 storage, two 50% capacity liquefaction trains, and approximately 10 acres of land area; receives CO2 by pipeline, rail, truck, and ship.
• COAST20 (Carbon Ocean and Storage Transport 20,000 Ton) First marine carbon transportation system in the United States, designed to transport liquefied CO2 (20,000-ton vessel capacity) from Florida emitters to permanent sequestration sites in Louisiana and Texas. Includes CO2 intermodal hubs/terminals in two U.S. states and a Jones Act-compliant CO2-carrying ship. ABS Approval in Principle (AiP) received in May 2025.
• OCCS (Onboard Carbon Capture & Storage) Onboard carbon capture and storage technology for commercial tanker vessels using Hollow Fiber Membrane Contactor (HFMC) technology. Three-stage process: exhaust gas conditioning, amine-based CO2 capture, and liquefied CO2 storage until offloading at port.
• Consulting Services

Quantifiable outcome

• 2,000,000 metric tons per year CO2 processing capacity initially, expandable to 8,000,000 mt/year
• +2 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and major.

• LBC Tank TerminalscoreStrategic or Co-development Partner · 15 May 2025LBC Tank Terminals and Aptamus announced a Joint Development Agreement for CO2 marine terminals, completing the CO2 supply chain from Port Tampa Bay. LBC provides the discharge and regasification terminal at Baton Rouge, Louisiana, adjacent to an existing dedicated CO2 pipeline system for delivery to permanent underground storage sites. Design work awarded September 2025.
• Aker Solutions (Entr)coreImplementation/ SI/ Consulting Partner · 8 May 2025Entr, the consultancy arm of Aker Solutions, was engaged for front end engineering and design of the T-RICH hub terminal at Port Tampa Bay and the discharge/regasification terminal at LBC Tank Terminals in Baton Rouge, Louisiana. Entr combines 300+ highly experienced engineers with access to Aker Solutions' global project execution expertise. The FEED study is expected to be completed by end of 2026.
• Overseas Shipholding Group (OSG)coreStrategic or Co-development Partner · 1 July 2024OSG is the parent company of Aptamus Carbon Solutions. Aptamus is a wholly owned subsidiary of OSG and part of the Saltchuk family of companies. OSG brings four decades of maritime transportation experience to Aptamus, providing the operational expertise for marine CO2 transport and storage solutions. OSG's Jones Act fleet and maritime operations expertise form the foundation of Aptamus's carbon reduction strategies.
• SaltchukcoreStrategic or Co-development Partner · 1 July 2024Saltchuk is the parent company of OSG, making Aptamus Carbon Solutions part of the Saltchuk family of companies. This affiliation provides corporate backing and access to broader maritime logistics expertise.
• Ionada Carbon Solutions LLCmajorTechnology or IntegrationIonada is a maker and innovator of Hollow Fiber Membrane Contactors (HFMC) technology for shipboard carbon capture. Calculations and design work for the OCCS study were performed by Ionada, whose technology was chosen as the basis for the MARAD-funded study due to its relatively low energy requirements and compact size.
• Port Tampa BaycoreStrategic or Co-development PartnerPort Tampa Bay is identified as the site for T-RICH hub, having identified a 15-acre parcel with access to an existing deep-water berth critical for efficient CO2 transport. Port Tampa Bay engineering staff provided input to the pre-FEED study. Port is also a partner in the COAST20 project.
• American Bureau of Shipping (ABS)majorTechnology or IntegrationABS (American Bureau of Shipping) awarded Approval in Principle (AiP) in May 2025 for the 20,000 MT LCO2 ATB (Articulated Tug Barge) design, validating the technical feasibility of Aptamus's marine CO2 transport vessel design.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Linde plc: Global industrial gases major that produces, liquefies, and distributes merchant CO2 via truck and ship. Comparable in the LCO2 logistics value chain — Aptamus's T-RICH and COAST20 system extends a similar model into dedicated CCS rather than industrial merchant CO2 supply.
• Kinder Morgan (CO2 business): Operates the Cortez and other dedicated CO2 pipelines serving Permian EOR and emerging CCS projects. Comparable as a high-volume, fee-based CO2 transportation incumbent that Aptamus's marine model aims to compete with where pipelines are uneconomic.
• Air Products and Chemicals: Industrial gas major that produces and ships LCO2 and is actively investing in CCS/hydrogen megaprojects. Comparable given its role as a large-scale CO2 supplier and operator of cryogenic CO2 logistics infrastructure.
• Denbury Resources (an ExxonMobil subsidiary): Long-standing U.S. operator of CO2 pipelines used for enhanced oil recovery, now part of ExxonMobil's Low Carbon Solutions. Directly comparable as an incumbent CO2 transport provider, though it relies on pipelines rather than ships.
• 1PointFive (Occidental): Occidental's CCS business building industrial-scale DAC plus sequestration. Comparable as a well-capitalized CCS infrastructure developer that competes for both emitter customers and CO2 transport/storage economics.

Direct peers

• Liquid Wind: Sweden-based developer of e-methanol projects that generates captured CO2 as a by-product and explores marine logistics for CO2 transport. Closest direct peer given its focus on maritime-linked CO2 handling and its relationship with carbon capture infrastructure providers.
• Northern Lights CCS JV: Joint venture of Equinor, Shell, and TotalEnergies operating maritime receipt and subsea storage of CO2 in Norway. Aptamus's COAST20 system is the closest U.S. analogue to Northern Lights' ship-to-storage CO2 logistics model.

Others

• Aker Solutions: Engineering partner that owns the Entr consultancy engaged for Aptamus's T-RICH and LCO2 terminal FEED work and develops offshore CCS substructures. Relevant as the lead engineer and a thematically adjacent infrastructure provider rather than a competitor.

Emerging players

• Talos Low Carbon Solutions: U.S. upstream operator developing coastal CCS hubs (e.g., Bayou Bend in Texas) with marine CO2 reception. Comparable as an emerging competitor combining offshore Gulf infrastructure with CO2 reception and storage capability.
• Project Greensand (Denmark): Danish consortium that shipped liquefied CO2 across the North Sea for subsea storage. Closely comparable to Aptamus in pioneering ship-based CO2 transport, although it operates in European waters rather than Gulf/U.S. coastwise.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/aptamus-carbon-solutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

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 Aptamus Carbon Solutions