What Fielax does

FIELAX GmbH is a privately held German limited liability company (GmbH) headquartered in Bremerhaven, founded in 2002, with a headcount of 11-50 employees. The company specializes in marine heat flow measurement technology and provides technical, scientific, and IT services centered on determining thermal conductivity in marine sediments. Its core technology comprises a proprietary heat flow probe system (with a new demonstrator unit first deployed offshore in February 2026) combined with specialized data acquisition hardware and software, used to support thermal dimensioning of power cables along offshore wind farm and interconnector routes.

The company's commercial offering spans seven main product/service lines: Heatflow & TRT measurement systems and services, temperature modelling, technical and IT services, data processing, custom software development, and archive migration services. Its primary revenue stream comes from B2B direct engagement with offshore wind developers, energy transmission utilities (interconnector projects), and government-affiliated research and archival institutions. Pricing is not publicly disclosed and is likely quote-based, reflecting a project services model. The go-to-market is direct enterprise sales supplemented by trade show presence (most recently Oceanology International 2026 in London) and downloadable technical brochures as content marketing.

FIELAX is currently funded by a project grant from the Federal Ministry for Economic Affairs and Energy under the "Maritime Research Program" (started October 2023) to develop its next-generation heat flow probe. It holds ISO 9001 quality management certification (certificate valid through 2026) and has executed an archive migration engagement with the Alfred Wegener Institute and the Lower Saxony State Archives. The company has no disclosed external equity investors, no parent company, no subsidiaries, and no public market listing.

Name

Fielax

Legal name

FIELAX GmbH

Website

https://fielax.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

1–10 employees

Short description

FIELAX GmbH is a Bremerhaven-based marine technology company that develops proprietary heat flow probes and thermal modeling services for offshore wind farm cable routing and interconnector projects, plus software development, data processing, and archive migration services.

Ownership category

akta.pro rank

Product category

Marine Survey & Geotechnical Measurement Services

NAICS

Geophysical Surveying and Mapping Services (541360)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Digital Engineering & Simulation (CFD/FEA, Digital Twins, Model-Based Engineering) (IMAJAGAL)

akta.pro secondary industries

Wind Power Plant EPC (Onshore/Offshore) (EUAEAAAF), Electrical Engineering & Power Distribution (Generation, Switchboards, Cabling, Lighting) (IMAJAGAF)

Keywords

• Marine heat flow
• Offshore cable survey
• Thermal conductivity measurement
• Geothermal analysis services
• Marine data processing

Headquarters

HQ city

Bremerhaven

HQ country

Germany

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels1 record

Marketing channels3 records

Core offering

FIELAX designs and operates heat flow measurement systems and associated services for marine sediments, enabling thermal conductivity determination and cable dimensioning for offshore wind farms and international interconnectors. In parallel, the firm delivers temperature modelling, general data processing, custom software development, and archive migration/digitization services for research and public-sector clients.

Product overview

FIELAX GmbH offers a portfolio of specialized products and services focused on heat flow measurement and geothermal analysis. The core offerings include Heatflow & TRT measurement systems (with various probe types for marine sediment applications), associated services (geothermal heat flow services, temperature modelling), and technical/IT services. The company also provides software development and data processing services. The product range is designed to support offshore wind farm and interconnector projects, with particular focus on thermal conductivity measurement for power cable dimensioning. Recent developments include a new heat flow probe demonstrator for offshore use, and the company has expanded into archive migration and data management services.

Differentiator

Problem solved

Functional benefit

Products and services

• Heatflow & TRT (Heat Flow Measurement Systems) Measurement systems for determining heat flow and thermal resistance in marine sediments, including various probe types for offshore applications such as cable routes for offshore wind farms and interconnectors.
• Heatflow & TRT Services Geothermal heat flow services including measurement, analysis, and consulting for offshore wind farm and interconnector projects.
• Modelling (Temperature Modelling) Temperature modelling services including sediment temperature analysis for climate change assessment, seasonal warming/cooling effects, and artificial heat sources such as buried power cables or pipelines.
• Technics & IT Technical and IT services provided by FIELAX to support marine and scientific projects.
• Data Processing Data processing services for various technical and scientific applications.
• Software Development Custom software development services, including programming support for specialized applications such as archive migration and integration.
• Archive Migration Services Programming support for migrating archive records to new systems, including transformation into standardized formats for online search and organization.

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Alfred Wegener InstitutecoreStrategic or Co-development Partner · 1 December 2025FIELAX providing programming support for integrating the Archive of German Polar Research into the Archive Information System of Lower Saxony and Bremen. Transformation of archive records into new format by end of year.
• Lower Saxony State ArchivescoreStrategic or Co-development Partner · 1 December 2025Partner in the archive information system integration project with the Archive of German Polar Research. All archive objects to be organized and searchable via Arcinsys website.

Broad incumbents

• SGS: Global testing, inspection and certification company serving offshore wind and energy transmission customers, including subsea cable-related services — broader but adjacent buyer ecosystem.
• COWI: Engineering consultancy with a substantial offshore wind and subsea cable engineering practice — competes for cable route design and offshore wind engineering scope.
• DNV: Independent energy and maritime advisory including offshore wind certification, cable advisory, and marine survey oversight — adjacent to FIELAX's offshore wind and interconnector customer base.
• Ramboll: Global offshore engineering consultancy with a large offshore wind practice covering cable route engineering, site characterization, and project development — competes for engineering scope adjacent to FIELAX's measurement services.
• Bureau Veritas: Testing, inspection and certification firm with marine and offshore wind service lines, often engaging with the same offshore developers and TSOs as FIELAX on subsea cable projects.
• Fugro: Global leader in marine geotechnical and geophysical site characterization, including offshore wind cable-route surveys — competes for the same offshore wind and interconnector survey budgets as FIELAX but at significantly larger scale.

Direct peers

• UTEC (Acteon): Marine survey and geotechnical services provider for offshore energy projects, including offshore wind farm site investigations and cable-route surveys — a direct competitor in the offshore wind survey value chain.
• Next Geosolutions: European marine survey and offshore engineering firm specializing in offshore wind, cable route, and subsea infrastructure surveys — directly comparable marine survey scope to FIELAX.
• GeoServe: Specialist marine geotechnical and geophysical firm focused on offshore wind, interconnector, and cable route surveys — closely comparable niche competitor to FIELAX in marine sediment characterization.
• Cathie Associates: Offshore geotechnical and geophysical engineering consultancy specialized for offshore wind and subsea cable projects — directly comparable service offering to FIELAX's marine sediment measurement and cable routing support.

Market position

Strengths4 records

Weaknesses4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Fielax