Strategic ocean infrastructure

Ocean-powered
infrastructure.

OCEES develops systems that use the ocean's natural thermal gradient to deliver continuous power, fresh water, cooling and long-term resilience.

The opportunity

The places most exposed to energy and water insecurity are often surrounded by their greatest untapped resource.

Tropical oceans hold a dependable temperature difference between warm surface water and cold deep water. OCEES is developing the integrated infrastructure to put that resource to work.

One platform · Four essential outcomes

Power. Water. Cooling. Resilience.

01

Power

Continuous renewable baseload power for island, coastal and mission-critical infrastructure.

02

Water

Desalinated water integrated into the same ocean-infrastructure platform.

03

Cooling

Deep seawater cooling for buildings, campuses and high-density computing.

04

Resilience

Long-life systems designed to reduce exposure to imported fuel and fragile supply chains.

Conceptual integrated coastal system showing warm- and cold-water intakes supporting power, district cooling, desalination and agricultural irrigation
Integrated ocean infrastructure · Conceptual rendering
© OCEES International, Inc. 2026

Ocean Thermal Energy Conversion

The future runs deep.

OTEC uses the temperature difference between warm surface seawater and cold water from the deep ocean to generate continuous renewable electricity.

  1. 01

    Warm surface seawater heats and vaporizes a closed-cycle working fluid.

  2. 02

    The vapor drives a turbine to generate electricity.

  3. 03

    Cold deep seawater condenses the fluid so the cycle can begin again.

  4. 04

    Shared marine infrastructure can also support desalinated water and cooling.

Sea Water Air Conditioning (SWAC)

Cooling from the deep ocean.

SWAC uses naturally cold deep ocean water through a heat exchanger to cool a separate freshwater distribution loop. The system can provide efficient cooling for buildings, campuses, critical infrastructure and high-density computing facilities.

The seawater remains separate from the closed building-water loop and is returned to the ocean through an appropriately engineered discharge.

Sea Water Air Conditioning system Cold deep seawater passes through a heat exchanger, cooling a separate freshwater loop serving buildings and computing facilities before seawater returns to the ocean. COLD DEEP SEAWATERSEAWATER RETURNHEAT EXCHANGERCLOSED FRESHWATER LOOPBUILDINGS · CAMPUSES · DATA
Cooling from the deep ocean · Simplified system diagram© OCEES International, Inc. 2026

Engineering beyond the concept

Designed from seabed to system.

OCEES's experience extends across thermal-cycle design, heat-exchanger configuration, marine bathymetry, deep-water intake systems, offshore-pipeline installation, shore-side civil works and integrated power-and-water infrastructure.

WARM WATER POWER TO GRID EVAPORATOR CONDENSER WORKING-FLUID LOOP
Thermal-cycle designWarm-water, working-fluid and cold-water interfaces.© OCEES International, Inc. 2026
SHORE FACILITY ANCHORED INTAKE ROUTE DEEP-OCEAN WATER
Marine route engineeringBathymetry, intake alignment, anchoring and installation.© OCEES International, Inc. 2026
OCEAN HEAT EXCHANGE POWER WATER COOLING
Shore-side integrationOne marine platform supporting multiple infrastructure outputs.© OCEES International, Inc. 2026
Conceptual offshore ocean-infrastructure platform supporting high-density computing

Ocean infrastructure for AI

Power and cooling, designed together.

OTEC and deep-seawater systems offer a potential platform for continuous renewable power and high-efficiency cooling for energy-intensive digital infrastructure. OCEES is evaluating applications for coastal and offshore computing environments.

Conceptual rendering · Not a completed project

Engineering and development experience

Credibility built through serious work.

These engagements represent engineering, feasibility and project-development experience. They are not presented as constructed or operational OCEES facilities.

01
Engineering & financial analysis submitted

Kwajalein Atoll · Marshall Islands

Army energy and water resilience

OCEES has supported Johnson Controls Government Systems, the prime contractor, in responding to a U.S. Army requirement for continuous island power and potable water. The submitted concept remains under review; no Army or DoD award or endorsement is implied.

02
SBIR Phase I & II completed

Diego Garcia · Indian Ocean

Naval OTEC power and water system

OCEES completed Office of Naval Research SBIR Phase I and Phase II work examining OTEC power and desalinated water for a remote mission-critical installation. That work established a technical basis for potential Phase III follow-on opportunities; no future award is guaranteed.

03
Feasibility study completed

Guam · United States

Land-based OTEC feasibility

A technical and economic study evaluated land-based OTEC with integrated desalination, including site conditions, system configuration and a pathway toward detailed engineering.

04
Feasibility study completed

U.S. Virgin Islands

Land-based and floating OTEC study

Prior work evaluated land-based and floating OTEC configurations with desalination for St. Croix and St. Thomas, including preliminary site and development considerations.

DOE-funded open-cycle OTEC research plant at NELHA in Hawaii

Industry validation · Hawaii

Operational OTEC experience on the OCEES team.

This U.S. Department of Energy-funded open-cycle OTEC research facility operated at NELHA in Hawaii during the 1990s. Dr. Luis A. Vega, who served as program manager for the project, is a member of the OCEES team.

Photo courtesy of NELHA.

Selective global engagement

Ocean infrastructure for island, coastal and mission-critical environments.

Pacific

Kwajalein · Guam · Hawaii

Indian Ocean

Diego Garcia

Caribbean

U.S. Virgin Islands

International development

Singapore · Oman · India

OCEES is engaging with governments, technical partners and long-term capital providers while exploring international engineering, research and project-development partnerships. Locations shown include completed studies, current discussions and prospective markets—not announced contracts.

Leadership

Experience across infrastructure, defense and commercialization.

Jeremy P. Feakins

Jeremy P. Feakins

Chairman & CEO

Entrepreneur, investor and infrastructure developer with more than 35 years of experience building, financing and commercializing businesses and technologies.

Bobbie Griffin

Bobbie Griffin

Chief Operations Officer

Retired U.S. Air Force Colonel with four decades of leadership in military operations, infrastructure, engineering and energy resilience.

William (Bill) Sheedy, PE

William (Bill) Sheedy, PE

Program Manager

Former U.S. Navy Civil Engineer Corps officer and professional engineer experienced in large-scale military and commercial infrastructure programs.

Paul Roege, PhD

Paul Roege, PhD

Strategic Advisor

Technology strategist and commercialization adviser supporting partnerships, market positioning and resilient infrastructure development.

Paula Vitz

Paula Vitz

Vice President, Community Engagement

Works with public officials, community organizations and stakeholders to advance economic development and strategic opportunities.

Technical leadership

Dr. Luis A. Vega

OTEC Subject-Matter Expert · OCEES Team

Dr. Vega brings decades of OTEC research, engineering and program-management experience, including leadership of the DOE-funded open-cycle OTEC demonstration at NELHA in Hawaii.

OCEES International

An ocean-infrastructure company moving technology toward deployment.

OCEES International, Inc. is a U.S.-based infrastructure and project-development company advancing OTEC, desalinated water and deep-seawater cooling for tropical, coastal and mission-critical environments.

For more than fifteen years, OCEES and its leadership have worked with governments, engineers and strategic partners to advance ocean-powered systems integrating electricity, fresh water, cooling and resilience.

Develop with us

The ocean is ready.
So are we.