What Green Rebel does

Green Rebel Marine Limited is an offshore site investigation services company headquartered in Cork, Ireland, founded in 2020 by Pearse Flynn. It provides integrated survey packages for offshore wind developers, spanning geophysical, metocean (meteorological and oceanographic), benthic, and aerial ecological surveys across the project development lifecycle from site characterisation through construction support. Named customers include SSE Renewables, Vattenfall, Fred Olsen Seawind, and Energia Renewables; Green Rebel contributed survey work to the SSE Arklow Bank development, a project valued at approximately €2.5 billion. The company holds ISO 9001, ISO 14001, ISO 27001, and ISO 45001 certifications and operates from offices in Cork, Limerick, Crosshaven, and Glasgow.

Its core technical assets are a purpose-built survey fleet — Roman Rebel, Lady Kathleen, and the long-term-hired 56m Glomar Vantage (via a partnership with Glomar Offshore) — combined with a Stage 2 OWA-certified floating LiDAR buoy for wind resource measurement and DataLink, a proprietary real-time data management platform. The acquisition of the MetOcean division of IDS Monitoring extended in-house metocean capability beyond what was previously bought in. Green Rebel is privately held and bootstrapped; in February 2022 it announced a €20 million technology investment programme to expand its digital and sensor platform. Leadership transitioned from founder Pearse Flynn to Kieran Ivers as the company moved into a scale stage.

The business model is project-based service revenue from utility-scale offshore wind developers under multi-year site characterisation and pre-construction survey contracts. Revenue is generated by selling vessel days, sensor deployments (including the floating LiDAR product), and integrated data deliverables rather than recurring SaaS. Customer engagement is concentrated among a small number of large European utilities and developers, with projects tied to specific offshore wind lease areas. Geographic expansion (Glasgow office) and stated ambitions to operate globally by 2025 indicate a go-to-market shift from an Ireland-centric supplier to a pan-European — and eventually global — offshore wind survey provider.

Name

Green Rebel

Legal name

Green Rebel Marine Limited

Website

https://greenrebel.ie

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

101–250 employees

Short description

Green Rebel Marine Limited provides offshore site investigation services — geophysical, metocean, benthic, and aerial ecological surveys — for utility-scale offshore wind developers including SSE Renewables, Vattenfall, Fred Olsen Seawind, and Energia Renewables.

Ownership category

akta.pro rank

Headquarters

HQ city

Cork

HQ country

Ireland

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Offshore Survey Services: Green Rebel generates revenue through providing geophysical, metocean, and aerial ecological survey services to offshore wind developers and other marine sectors. Services span the full data lifecycle from acquisition through processing, analysis, interpretation, reporting, and delivery. Projects include seabed mapping, floating LiDAR deployment, current and wave monitoring, and water quality assessment. Revenue is project-based, with contracts awarded through competitive tender processes (e.g., SSE Renewables Arklow Wind Park, Muir Mhòr floating offshore wind farm, North Celtic Sea project with Energia Renewables).
2. Data Services and Reporting: Ongoing data interpretation, monthly reporting, and real-time data delivery services tied to deployed monitoring equipment (floating LiDAR buoys, wave riders, ADCP systems). Data is delivered to clients in near-real time via DataLink platform, with monthly performance reports including datasets and performance metrics.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

Green Rebel delivers integrated offshore site investigation services for the offshore wind sector, combining geophysical and benthic surveys from purpose-built vessels, metocean data collection via proprietary floating LiDAR buoys, and aerial LiDAR/optical surveys from its own aircraft. Data is delivered to clients through its DataLink platform to support wind farm development, cable routing, and consenting.

Product overview

Green Rebel is a specialist offshore site investigation company delivering geophysical and metocean surveys through a portfolio of purpose-built vessels, floating LiDAR buoys, and aircraft. The company operates three core service divisions: Marine/Geo (geophysical surveys, hydrographic surveying, side-scan sonar, magnetometry, sub-bottom profiling, seismic investigation), MetOcean (floating LiDAR, wave/current monitoring, water quality monitoring), and Aerial Surveys. All data is processed through the proprietary DataLink platform and delivered via a world-class team of scientists, engineers, and data specialists.

Differentiator

Problem solved

Functional benefit

Brands

• IDS Monitoring: MetOcean division of Green Rebel providing floating LiDAR, wave monitoring, current monitoring, and water quality monitoring solutions with over 25 years of experience.

Products and services

• Marine Surveys (Geophysical & Benthic)
• Floating LiDAR (FLiDAR / DataBuoy) Campaigns
• Aerial Surveys (AeroD2)
• DataLink Data Delivery Platform

Quantifiable outcome

• Muir Mhòr offshore wind farm project data will inform energy yield analysis and engineering design of wind turbine array for a project expected to be operational by 2030
• +3 more outcomes

Named customers4 records

Segments2 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature7 records

Partnerships

Six partnerships are on record, tiered minor and core.

• Glomar OffshoreminorStrategic or Co-development Partner · 1 April 2024Green Rebel signed a long-term hire agreement with Glomar Offshore for a 56-metre multi-purpose vessel (Glomar Vantage). The vessel will be involved in geophysical and geotechnical survey works in the North Sea and Irish Sea. It is equipped with multibeam echosounder, side scan sonar, sub-bottom profiler, and magnetometer, and has 27 accommodation berths.
• Energia RenewablescoreStrategic or Co-development Partner · 1 December 2022Energia Renewables appointed Green Rebel to carry out geophysical surveys for the North Celtic Sea offshore wind project off Co. Waterford. A three-part mini docuseries was jointly produced showcasing the survey work. The project is one of Ireland's most advanced offshore energy projects, with construction targeted for 2026 to meet Ireland's 2030 climate targets. Will power over 500,000 Irish homes and businesses.
• Fred Olsen SeawindcoreStrategic or Co-development Partner · 1 November 2022Fred Olsen Seawind is in a joint venture with Vattenfall on the Muir Mhòr floating offshore wind farm project located 70km off the coast of Aberdeen in the North Sea. Green Rebel was awarded the tender for MetOcean surveys, signing contracts in November 2022 and deploying floating LiDAR technology in February. The project is on track for operational status by 2030.
• VattenfallcoreStrategic or Co-development Partner · 1 November 2022Vattenfall is in a joint venture with Fred Olsen Seawind on the Muir Mhòr floating offshore wind farm project (70km off Aberdeen, North Sea). Green Rebel was awarded the tender to carry out MetOcean surveys, deploying floating LiDAR for 12 months. Project director David Hinshelwood noted the importance of the data for foundations, mooring systems, cables, and operational planning.
• SSE RenewablescoreStrategic or Co-development PartnerGreen Rebel and SSE Renewables completed a key survey milestone for Phase 2 of SSE's Arklow Wind Park in the Irish Sea. Green Rebel employed 80 specialists using vessels Roman Rebel and Lady Kathleen to gather seabed data. The wind farm is estimated at €2.5 billion and will power ~850,000 homes. Project manager John O'Sullivan noted the unique combined wind, wave, and climate conditions at Arklow Bank site.
• Wind Energy IrelandcoreStrategic or Co-development PartnerGreen Rebel contributed to Wind Energy Ireland's report 'Working Together – Building Ireland's Offshore Wind Industry' and sponsored the 'Renewables in Ireland 2022' event in Cork. This contribution prompted the Joint Oireachtas Committee on Enterprise, Trade and Employment to hold a meeting on the future of offshore wind energy, with CEO Kieran Ivers invited to speak. Wind Energy Ireland's report outlined recommendations for developing Ireland's domestic offshore supply chain.

Scale indicators9 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• MMT Group: MMT is a Swedish marine survey company specialising in geophysical and hydrographic surveys for offshore wind, oil and gas, and cable route projects. It is now part of Ocean Infinity but continues to operate as a focused offshore wind survey brand, providing highly comparable services to Green Rebel in the North Sea and Baltic.
• Gardline Limited: Gardline is a UK-based marine survey contractor with a long-established fleet delivering geophysical, geotechnical, and environmental surveys to offshore wind, oil and gas, and cable clients. Its service portfolio and North Sea/Irish Sea geographic focus closely mirror Green Rebel's.
• Ocean Infinity: Ocean Infinity is a UK/US-based marine survey and subsea robotics company operating a large fleet of unmanned and crewed vessels for geophysical and oceanographic data acquisition, including dedicated offshore wind services. It acquired MMT Group in 2021 and competes head-to-head with Green Rebel on European offshore wind tenders.
• Acteon (UTEC): Acteon, through its UTEC brand, delivers offshore survey, positioning, and geotechnical services to offshore wind and oil and gas clients globally. Its survey services portfolio and European project base position it as a direct comparable to Green Rebel's integrated offering.
• Reach Subsea: Reach Subsea is a Norwegian offshore subsea services company offering survey, inspection, and light intervention support to offshore wind and oil and gas clients. It competes for the same European offshore wind survey scopes that Green Rebel targets, including floating wind tenders.

Emerging players

• Next Geosolutions: Next Geosolutions is an Italian-headquartered offshore survey company delivering marine geophysical, geotechnical, and environmental services across European waters. It is a comparable European mid-sized peer serving the offshore wind site investigation market.
• Argeo: Argeo is a Norwegian marine survey company using autonomous underwater and surface vessels for geophysical and geotechnical surveys, with a growing offshore wind focus. It is smaller and earlier-stage than Green Rebel but competes in the same survey-for-offshore-wind niche with a tech-led differentiation story.

Broad incumbents

• PGS: PGS is a global marine geophysical company historically focused on oil and gas seismic acquisition that has been expanding into offshore wind site characterisation. Its scale and vessel fleet exceed Green Rebel's, but its offshore wind survey offering overlaps materially.
• Fugro: Fugro is the global leader in marine geophysical, geotechnical, and metocean survey services with a much larger fleet and broader geographic footprint than Green Rebel. It competes directly for the same offshore wind site investigation tenders but as part of a much larger portfolio of geoscience services.

Others

• Cathie Group: Cathie Group is a UK-headquartered offshore wind engineering and geoscience consultancy that interprets survey data for offshore wind developers. It is an adjacent rather than competing participant in the same value chain, frequently partnering with survey contractors like Green Rebel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@greenrebelmarine
• Facebookfacebook.com/GreenRebelMarine
• LinkedInlinkedin.com/company/green-rebel-marine

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

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 Green Rebel