What Gavin & Doherty Geosolutions does

Gavin & Doherty Geosolutions (GDG) is a Dublin-headquartered specialist engineering consultancy founded in 2011, delivering geotechnical, civil, and structural design solutions for offshore wind, marine, ports and harbours, onshore renewables, infrastructure, structures, and environmental projects. Its service portfolio spans seven core areas (Offshore, Ports & Harbours, Environment, Structures, Infrastructure, Onshore Renewables, Research & Development) delivered through specialised capabilities in ground modelling, metocean analysis, and geotechnical design, supported by proprietary 3D ground modelling tools and metocean software that integrate public geological datasets (INFOMAR, British Geological Survey) with project-specific geophysical and geotechnical data. GDG operates from offices in Dublin, Cork, London, Edinburgh, Belfast, Utrecht, and Providence, Rhode Island, employing 130+ specialist engineering consultants and serving enterprise developers, contractors, financial institutions, and government organisations across Europe, North America, and APAC.

Since 2021 GDG has operated as a member company of Venterra Group, a global offshore wind services platform that has acquired ten companies across the Engineer-Build-Support lifecycle and raised approximately £150 million in its fourth fundraising round led by BeyondNetZero (General Atlantic's climate fund) with First Reserve. GDG's go-to-market is direct enterprise and government engagement through competitive tenders and direct appointments, with revenue generated via bespoke project-based consultancy contracts. Notable engagements include geotechnical and seismic design for the 1,044 MW Hai Long offshore wind project in Taiwan, design advisory for the €200M Rosslare Europort ORE Hub, foundational studies for the Tonn Nua 900 MW site off County Waterford, and contributions to Ireland's South Coast Designated Maritime Area Plan.

Name

Gavin & Doherty Geosolutions

Legal name

Gavin & Doherty Geosolutions Ltd

Website

https://gdgeo.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Gavin & Doherty Geosolutions is an Ireland-based specialist geotechnical, civil, and structural engineering consultancy serving offshore wind developers, port authorities, and governments across Europe, North America, and APAC, and operating as a member company of Venterra Group.

Ownership category

akta.pro rank

Headquarters

HQ city

Dublin

HQ country

Ireland

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Design Consultancy Services: GDG generates revenue through specialist design and consultancy contracts for geotechnical, civil and structural engineering across offshore wind, marine, infrastructure, onshore renewables, and environment sectors. Revenue is project-based, typically awarded through competitive tendering to developers, contractors, councils, government organisations, and financial institutions.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Core offering

GDG is a specialist engineering consultancy providing geotechnical, civil and structural design and consultancy services for offshore wind, marine, ports and harbours, infrastructure, onshore renewables, environment, and research & development projects. The firm delivers ground modelling, foundation design, metocean analysis, seabed characterisation, and geotechnical design to developers, contractors, councils, financial institutions, and government organisations. As a member company of Venterra Group, GDG offers its services as part of an integrated Engineer-Build-Support lifecycle platform.

Product overview

Gavin & Doherty Geosolutions (GDG) is a specialist engineering consultancy offering a unified portfolio of design and consultancy services rather than a software product. The company provides geotechnical, civil and structural design solutions across seven core service areas: Offshore, Ports & Harbours, Environment, Structures, Infrastructure, Onshore Renewables, and Research & Development. These services are delivered through specialized offerings including Ground Modelling, Metocean Services, and Geotechnical Design, all focused on offshore wind, marine, and infrastructure projects worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Offshore Services Specialist design and consultancy services to the offshore sector, including offshore wind foundation design, geotechnical analysis, and marine engineering solutions for developers, contractors, and government organisations.
• Ports & Harbours Services Marine civil and structural design, and geotechnical consultancy services in the nearshore environment for harbour developments and port infrastructure clients such as DAFM and Iarnród Éireann.
• Environment Services Environmental consultancy services covering the full project lifecycle from site selection to asset disposal for renewable energy and infrastructure projects.
• Structures Services Specialist design and consultancy services in urban areas, focusing on soil structure interaction for commercial and residential developments.
• Infrastructure Services Geotechnical, civil and structural design and consultancy services for infrastructure projects including roads, bridges, flood defence schemes, housing projects, and retaining walls.
• Onshore Renewables Services Specialist design and consultancy services to the onshore wind, solar and electrical grid sectors, including foundation design, ground conditions assessment, and access track design.
• Research & Development Services Cutting-edge R&D services ensuring clients benefit from the most recent advancements in offshore wind and geotechnical engineering, including academic and public-sector research collaborations.
• Ground Modelling Desktop studies and ground modelling services providing data-driven insight for foundation concepts, technology suitability, installation strategy, and project cost and risk assessment for offshore wind sites. Includes interactive 3D ground models for seabed and subsurface visualisation.
• Metocean Services Metocean site condition assessment, weather downtime assessment, seabed mobility assessment, environmental impact assessment, and scour prediction assessment and protection design services for offshore projects.
• Geotechnical Design Geotechnical designs for civil engineering projects including retaining walls, flood defence schemes, and housing projects.

Quantifiable outcome

• 1,044 MW Hai Long offshore wind project (Taiwan) expected to power 1.55 million households once fully operational in 2026
• +3 more outcomes

Named customers20 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Twelve partnerships are on record, tiered strategic, major, core, project-level and research.

• Tonkin + TaylorstrategicStrategic or Co-development Partner · 27 February 2025Venterra Group and Tonkin + Taylor signed a Memorandum of Understanding (MoU) to collaborate on offshore wind projects in Australia and New Zealand. The partnership combines Venterra's global expertise in lifecycle offshore wind solutions with Tonkin + Taylor's deep regional knowledge. Services include Owners Engineering, environmental and geotechnical investigation, foundation design, marine surveys, project management, and UXO and metocean data analysis. Australia aims for 32 GW offshore wind by 2030 and New Zealand is exploring up to 8 GW.
• NKTstrategicTechnology or Integration · 20 October 2024Osbit Ltd, part of Venterra Group, was awarded a contract by NKT to design and build the NKT T3600, one of the world's most powerful subsea cable trenchers delivering 3,600 horsepower, capable of burying power cables at depths of up to 5.5 metres below the seabed. Expected to be commercially operational by 2027.
• CAPE HollandmajorTechnology or Integration · 1 August 2023Venterra Group agreed to acquire CAPE Holland, the market leader in offshore vibro-piling. Headquartered in Beilen, The Netherlands, CAPE Holland developed unique Vibro Lifting Tools to handle and drive piled foundations for offshore wind turbine monopile foundations. The company employs over 60 people and its fleet is deployed worldwide on behalf of developers and tier-one contractors. The acquisition was expected to complete in the weeks following the announcement.
• Oceanscan Holdings LimitedmajorTechnology or Integration · 22 October 2022Venterra Group acquired Oceanscan Holdings Limited, a leading group providing subsea and non-destructive test equipment, geotechnical services, and specialist personnel to the offshore energy market. Oceanscan is headquartered in Aberdeen with subsidiaries in Houston and Singapore. Its subsidiaries include Oceanscan Limited, Hydrographic Personnel Resources, Geoforce Technical Services, and Sercal Non-Destructive Test Equipment. The acquisition reinforces Venterra's Geoscience and Survey teams.
• Naver EnergystrategicStrategic or Co-development Partner · 7 September 2022Venterra Group launched Naver Energy as its first start-up venture. Based in Denmark, Naver Energy provides windfarm developers with project management services. Launching with eight founding partners led by Henrik Stamer with over 20 years' experience in offshore wind, the team plans to grow to over 40 people in its first year, offering services for project management, engineering management and procurement across the UK, EU, US and Asia.
• INSPIRE EnvironmentalcoreTechnology or Integration · 1 July 2022INSPIRE Environmental, a leading US marine environmental consultancy founded in 2015 by Drew Carey and Joe Germano, joined Venterra Group as its first North American acquisition. INSPIRE specialises in acquisition and interpretation of data determining the health of the seabed and ocean habitats, serving clients including Orsted, Shell, Equinor, Siemens Gamesa, Mayflower Wind, Ocean Winds, BP, and NYSERDA. Located in Newport, Rhode Island, INSPIRE opened Venterra's US headquarters on the East Coast.
• PartraccoreTechnology or Integration · 17 June 2022Partrac, a metocean and seabed consultancy founded in 2003 by Sam Athey, Kevin Black, and Peter Wilson, joined Venterra Group. Partrac provides expert metocean and seabed measurement, analysis and critical advice for the offshore wind industry. As part of Venterra, Partrac continues to work on pioneering offshore wind projects and accelerates its growth as part of the wider 'Engineer' offering alongside GDG.
• BVG Associatesproject-levelImplementation/ SI/ Consulting PartnerGDG worked alongside BVG Associates to support the identification of optimal areas for development within the South Coast Designated Maritime Area Plan (SC-DMAP) in Ireland's Celtic Sea.
• Anthony D Bates Partnership (ADBP)project-levelImplementation/ SI/ Consulting PartnerGDG and ADBP were appointed by the Department of Agriculture, Food and the Marine (DAFM) to undertake the detailed design, tender and construction phases of the Rossaveel Deep Water Quay Development. ADBP provided technical and contractual advice relating to the dredging aspects of the scheme.
• Nicholas O'DwyerstrategicImplementation/ SI/ Consulting PartnerGDG and Nicholas O'Dwyer (an RSK company) were awarded the design contract for the ORE Hub at Rosslare Europort by Iarnród Éireann. The partnership combines civil engineering and marine advisory expertise for the €200 million port infrastructure project.
• MaREI (SFI Research Centre for Energy, Climate and Marine)researchStrategic or Co-development PartnerGDG collaborated with MaREI, the SFI Research Centre for Energy, Climate and Marine, on the 'ShipFuel' research project to develop a path to low-carbon alternatives for the Irish maritime sector. Funded by SEAI and the Department of Transport, the project investigates alternative fuels including hydrogen, biomethane, methanol, and renewable diesel.
• RWEmajorTechnology or IntegrationVenterra Group company Partrac has been supporting RWE on the Sofia Offshore Wind Farm since May 2023, deploying metocean measurement and demarcation buoys and providing real-time environmental data for construction planning. Sofia is one of the world's largest offshore wind farms, located 195 km northeast of the UK coast on Dogger Bank.

Scale indicators8 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Cathie Group: Cathie Group is a specialist geotechnical engineering consultancy focused on offshore wind. It directly competes with GDG for geotechnical site investigation interpretation, foundation design, and cable route engineering across European offshore wind projects, serving many of the same developers.

Broad incumbents

• Fugro: Fugro is a global geoscience and offshore site characterization specialist offering geotechnical, geophysical, and metocean services. It overlaps with GDG on offshore wind site investigation and ground model delivery, though at much larger scale and with integrated survey assets.
• AtkinsRéalis: AtkinsRéalis (formerly Atkins / SNC-Lavalin) is a global multi-disciplinary engineering firm with a significant offshore wind practice. It is both a competitor for owners engineering and detailed design scopes and a feeder of senior talent into GDG (e.g., the MD and an Offshore Technical Director came from Atkins).
• Royal HaskoningDHV: Royal HaskoningDHV is an international engineering consultancy with deep offshore wind design and marine infrastructure capabilities. It competes with GDG on offshore wind, ports, and coastal engineering scopes and is the former employer of GDG's current Managing Director.
• Arup: Arup is a global multi-disciplinary engineering consultancy with a strong offshore wind and marine infrastructure practice. It competes for high-value offshore wind owners engineering, geotechnical, and structural design work similar to GDG's scope.
• COWI: COWI is a Danish-headquartered engineering consultancy with a large offshore wind practice spanning foundation design, transport and installation, and site assessment. It competes with GDG on European offshore wind detailed design and metocean scopes.
• WSP: WSP is a global professional services firm with a sizeable environment, energy, and offshore wind advisory practice. It bids for multi-disciplinary scopes that include the geotechnical, marine, and consenting work in which GDG specializes.
• Mott MacDonald: Mott MacDonald is a global engineering consultancy with substantial offshore wind, ports, and energy advisory capabilities. It frequently competes for owners engineering and detailed design roles on the same offshore wind projects where GDG is positioned.
• Ramboll: Ramboll is a Danish-headquartered engineering, design, and consultancy firm with a leading offshore wind practice. It competes with GDG on European offshore wind design, environment, and consenting scopes.

Emerging players

• Acteon: Acteon is an offshore energy services group covering subsea foundations, geotechnical installation, and marine survey. It is both a former employer of GDG's offshore director and an adjacent player in metocean, foundation, and seabed intervention work overlapping with Venterra's portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/gavin-&-doherty-geosolutions
• Xx.com/GDGeosolutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds2 records

Investors2 records

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 Gavin & Doherty Geosolutions