Global OTEC

What Global OTEC does

Global OTEC is a UK-based clean energy company that designs and commercialises floating Ocean Thermal Energy Conversion (OTEC) platforms which generate continuous baseload electricity by exploiting the temperature differential between warm tropical surface seawater and cold deep ocean water via an Organic Rankine Cycle. Its core product is the proprietary OTEC Power Module® — a self-contained, modular skid delivering up to 500 kW of gross installed capacity per unit, scalable from a single module to systems exceeding 50 MW by combining units — floated on storm-resistant cylindrical platforms (the prototype 'Don' at PLOCAN, Canary Islands). The technical architecture integrates Makai Ocean Engineering's proprietary Thin Foil Heat Exchanger (TFHX), a vertical seawater intake riser that cuts pipe length requirements by approximately 80% versus onshore OTEC, and Lloyd's Register-certified designs (1.5 MW 'Dominique' platform). Named projects include PLOTEC, the Onshore Demonstration, the Dominique commercial platform, and Offshore Electrification applications.

The company earns — or intends to earn — revenue through long-term power purchase agreements (PPAs) with island governments and international development organisations (world's first signed with São Tomé and Príncipe, supported by UNIDO; BIDC MoU for Barbados June 2025), deployment of OTEC Power Modules on offshore oil & gas, data centre and green-fuel installations, and grant-funded R&D (€3.5M EU Horizon Europe for PLOTEC, £500K NZTC TechX, Climate VC backing). Customer segments are organised vertically: tropical island states and SIDS (primary), offshore production, data centres, green fuel production, ports and cruise terminals, and resorts/eco-tourism.

Go-to-market is enterprise/B2G field sales — direct negotiations with national governments, regional development banks and industrial operators, augmented by partnerships with Makai, 2H Offshore, ENOGIA, Lloyd's Register, SIDS DOCK/GLOEA and UFRJ. Pricing is not publicly disclosed and is set per PPA; the company estimates a levelised cost of energy of $0.15–$0.30/kWh for early-generation OTEC barges, with potential to fall to ~$0.05/kWh at 50–100 MW scale. The company identifies over 25 GW of existing fossil fuel capacity across tropical islands and up to 2–3 TW of theoretical resource within 100 km of tropical land masses as its addressable market.

Name

Global OTEC

Legal name

Global Otec

Website

https://globalotec.co

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Global OTEC is a UK-based clean energy company that designs floating Ocean Thermal Energy Conversion platforms — anchored by its proprietary 500 kW OTEC Power Module® — to deliver 24/7 baseload renewable power for tropical island states, offshore oil & gas operations, data centres and green-fuel producers.

Ownership category

akta.pro rank

Product category

Ocean Thermal Energy Conversion (OTEC) / Marine Renewable Energy

NAICS

Electric Power Generation (22111), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Ocean Thermal Energy Conversion (OTEC) Power Generation (EUACAJAE)

akta.pro secondary industry

Marine & Hydrokinetic R&D (Tidal, Wave, River Current, OTEC) (EUAMAOAD)

Keywords

• Ocean thermal energy conversion
• Floating OTEC platforms
• Offshore baseload power
• Marine renewable energy
• Island electrification

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Power Purchase Agreements (PPAs): Long-term contracts with island nations and governments for baseload electricity supply. São Tomé and Príncipe signed world-first OTEC power purchase agreement. Barbados exploring similar arrangements. Revenue based on electricity volume delivered at negotiated rates.
2. Offshore Electrification Services: Power supply services for offshore operations including oil and gas platforms, data centers, and maritime facilities. OTEC modules replace diesel generators, providing sustainable power for remote sea-based operations.
3. EU Research and Development Grants: €3.5 million Horizon Europe funding for PLOTEC project. Supports prototype development, testing, and validation. Funding covers pan-European consortium led by Global OTEC.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Global OTEC designs and commercialises floating Ocean Thermal Energy Conversion (OTEC) platforms and modular power systems that convert the temperature difference between warm tropical surface seawater and cold deep ocean water into 24/7 renewable baseload electricity. Its core product is the proprietary OTEC Power Module®, a self-contained skid-based unit delivering up to 500 kW per module and scalable to 1–50 MW by combining multiple units. Offerings target tropical island states, offshore oil and gas operations, data centres, green fuel production, ports, and eco-tourism facilities.

Product overview

Global OTEC is a UK-based clean energy company that develops and commercialises Ocean Thermal Energy Conversion (OTEC) technology, which generates clean baseload electricity 24/7 by harnessing the temperature difference between warm tropical surface water and cold deep ocean water. The company's product portfolio is anchored by the OTEC Power Module®, a proprietary self-contained skid-based modular system with up to 500 kW capacity per unit, scalable to 1–50 MW by combining modules. This core product is complemented by several named projects: PLOTEC — a storm-resistant offshore prototype platform deployed at PLOCAN in the Canary Islands as the world's first purpose-built offshore OTEC platform; the Onshore Demonstration — the world's largest onshore OTEC pilot plant; Dominique — a First-Of-A-Kind 1.5 MW floating commercial-scale OTEC platform slated for São Tomé and Príncipe; and Offshore Electrification — applications of the OTEC Power Module for sea-based operations replacing diesel and gas turbines. The technology uses an Organic Rankine Cycle and is designed for tropical islands, offshore platforms, data centres, ports, resorts, and green fuel production.

Differentiator

Problem solved

Functional benefit

Brands

• OTEC Power Module®: Proprietary self-contained skid enabling lower cost, modular approach to generating electricity from OTEC with increments of up to 500 kW of gross installed capacity. Contains all necessary safety and control systems for local and remote operations.

Products and services

• OTEC Power Module® Proprietary self-contained skid module generating up to 500 kW of gross installed capacity per unit from Ocean Thermal Energy Conversion via an Organic Rankine Cycle. Scalable from 1 module to systems exceeding 50 MW by combining units. Contains all necessary safety and control systems for local and remote operations. For tropical island utilities, offshore platforms, data centres, power-to-X facilities, ports, and marinas.
• Offshore Electrification solution Application of the OTEC Power Module for sea-based operations such as oil and gas wells, processing rigs, and drilling platforms currently powered by gas and diesel turbines. Replaces the need for long subsea tiebacks and enables offshore facilities to operate more sustainably in remote regions.
• PLOTEC storm-resistant offshore OTEC prototype Pan-European consortium project delivering a storm-resistant cylindrical floating OTEC prototype capable of withstanding tropical revolving storms. Installed at PLOCAN test site off Gran Canaria, Spain, for year-long testing of resilience, structural integrity, and continuous power generation through hurricanes.
• Onshore OTEC Demonstration World's largest onshore OTEC demonstration plant, generating up to 500 kW of clean baseload power day and night, all year round. Designed to validate OTEC technology and prepare it for large-scale commercial deployment.
• Dominique — 1.5 MW floating OTEC platform First-Of-A-Kind 1.5 MW floating OTEC platform designed to address small islands' critical need for affordable and reliable renewable electricity. Planned for deployment in São Tomé and Príncipe as the world's first commercial-scale floating OTEC platform, supported by UNIDO and the world's first OTEC PPA.

Quantifiable outcome

• Reduces pipe length requirement by approximately 80% compared to onshore OTEC systems
• +5 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Ten partnerships are on record, tiered core, regional and supporting.

• Makai Ocean EngineeringcoreTechnology or Integration · 5 August 2025MoU signed August 2025 for integration of Makai's proprietary Thin Foil Heat Exchanger (TFHX) technology into Global OTEC's OTEC Power Module. Makai brings four decades of OTEC R&D experience including design and operation of one of only two grid-connected OTEC demonstration plants. TFHX features compact geometries and corrosion-resistant materials to lower costs while maintaining thermal efficiency and fouling resistance.
• Barbados Investment & Development Corporation (BIDC)coreStrategic or Co-development Partner · 1 June 2025MoU signed June 2025 to collaborate on sustainable ocean renewable energy development. Barbados targeting 100% renewable energy by 2030. Partnership for OTEC exploration and potential deployment in Caribbean nation.
• UFRJ (Universidade Federal do Rio de Janeiro)regionalStrategic or Co-development Partner · 1 January 2025MoU signed January 2025 for collaboration on ocean energy advancement in Brazil. Partnership to drive adoption of OTEC technology in Brazilian waters through research and development cooperation.
• PLOCAN (Oceanic Platform of the Canary Islands)coreTechnology or Integration · 1 January 2024Pre-consented marine technology test site off Gran Canaria, Spain. Hosts Global OTEC's offshore OTEC prototype 'Don' for year-long testing. Location provides access to deep ocean water close to shore for system validation.
• FugrosupportingTechnology or Integration · 1 January 2024Fugro providing advanced sensors for PLOTEC prototype testing. Sensors record gyroscopic and accelerometer data to monitor vessel motion and cold-water pipe stability, correlating with local wave data.
• 2H OffshorecoreTechnology or Integration · 1 December 2023MoU collaboration for OTEC development, specifically focusing on cold water pipe and riser technology. 2H Offshore brings subsea engineering expertise to address one of OTEC's most complex technical challenges.
• ENOGIAcoreTechnology or Integration · 1 August 2023Partnership to develop OTEC plants combining ENOGIA's waste heat recovery technology with Global OTEC's floating platform. Next-generation OTEC components optimized through the collaboration.
• UNIDOcoreStrategic or Co-development Partner · 1 July 2023United Nations Industrial Development Organization supporting development of first OTEC project in São Tomé and Príncipe. Technical assistance and international development backing for OTEC commercialization in SIDS.
• Lloyd's RegistercoreTechnology or Integration · 1 June 2023Lloyd's Register awarded Approval in Principle (AiP) for Global OTEC's 1.5MW floating OTEC platform (Dominique) to be installed in São Tomé and Príncipe. First AiP for a floating OTEC system. Lloyd's Register certification validates engineering design for commercial deployment.
• SIDS DOCKcoreStrategic or Co-development Partner · 1 January 2021Global Ocean Energy Alliance (GLOEA) approved by Pacific leaders highlighting Global OTEC projects. Alliance formed to bring floating OTEC to small island developing states. GLOEA represents coordinated SIDS approach to ocean energy adoption.

Scale indicators6 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Makai Ocean Engineering: Hawaii-based ocean engineering firm that designed and operated one of only two grid-connected OTEC demonstration plants and is Global OTEC's TFHX technology partner. Directly comparable as the leading legacy OTEC R&D player with overlapping technology stack and target use cases.

Emerging players

• Carnegie Clean Energy: Australia-listed marine energy company developing CETO wave-energy technology for island and offshore applications. Comparable as a publicly-listed, early-commercial-stage ocean-energy developer targeting utility-scale baseload power and desalination in similar geographies.
• CorPower Ocean: Swedish/Portuguese wave-energy converter developer pursuing commercial-scale offshore WEC deployment. Comparable as a pre-commercial deep-tech ocean-energy company relying on EU grants and certification milestones to reach its first commercial unit.
• AW-Energy: Finnish developer of the SurgeWEC wave-energy converter with utility pilots. Comparable as a focused marine-energy equipment company selling into island and offshore operators via similar long-cycle project development.
• Wello (Wave Energy Converter): Finnish floating WEC developer targeting island and offshore power markets. Comparable as a sub-scale European ocean-energy equipment maker pursuing offshore-electrification use cases.
• Alaka'i Energy: US/UK-based ocean-energy startup developing wave-energy and ocean-thermal conversion devices for island and remote applications. Comparable as an early-stage ocean-energy developer targeting SIDS and tropical deployment contexts.
• Nelumbo Energy: Marine-energy services firm providing engineering, testing, and deployment support for ocean-energy and offshore decarbonization projects. Comparable as an enabling engineering partner in the same OTEC/marine-renewable project ecosystem, including PLOCAN-style testbed work.

Broad incumbents

• Simec Atlantis Energy: UK-based developer of tidal-stream and marine renewable projects targeting island and coastal markets. Comparable as a marine-renewable IPP with similar technology risk profile, government PPA sales motion, and tropical/island project pipeline.

Regional players

• Sustainable Marine Energy: Canadian tidal-energy developer (PLAT-I platform) focused on remote community and island microgrids. Comparable as a specialist marine-renewable equipment vendor with a similar island/microgrid-offtake model and B2G sales motion.

Others

• Biotherm Energy: Project developer focused on offshore wind co-located with marine energy solutions, including ocean-thermal and wave pilots, for island and offshore decarbonization. Comparable as an adjacent ocean-energy integrator working on baseload offshore power for industrial offtakers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCz4j02yK7Z7S1T4t4P7qZ9Q
• LinkedInlinkedin.com/company/global-otec
• Xx.com/globalotec

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Global OTEC