Correll Group
Correll Group (SPIE Wind Connect) is a UK-based specialist contractor delivering high-voltage cable installation, termination, testing, fault-finding, commissioning and 24/7 HV control-room services exclusively to offshore wind farm developers, EPC contractors and turbine manufacturers worldwide.
- Company typePrivate
- Founded2013
- HeadquartersSkelton-in-cleveland, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Correll Group does
Correll Group, operating under the brand SPIE Wind Connect, is a specialist high-voltage services contractor dedicated to the offshore wind industry. Founded in 2013 and headquartered in Skelton-in-Cleveland, UK, the company is a wholly owned subsidiary of SPIE (Euronext Paris: SPIE.PA). It delivers cable installation (pull-in), termination and jointing, cable fault location and repair, HV commissioning, operations and maintenance, and a 24/7 HV control room service through three divisions — Correll Electrical Engineering (CEE), Correll Cable Installation & Power Services (CIPS), and Correll High Voltage Management (CHVM/HV-M). Its technical credentials include Senior Authorised Persons and Authorised Persons qualified up to 400kV and early-mover capability in 66kV inter-array cable systems for next-generation offshore wind turbines.
The company sells project-based professional services to offshore wind farm developers, EPC contractors, and wind turbine generator manufacturers, including Ørsted, Vattenfall, DEME, Jan De Nul, Prysmian, Siemens Gamesa, Seaway 7, Hellenic Cables, GE, Global Marine Systems, Asso.subsea, Van Oord, Baltic Power, Vineyard Wind, and Taiwan Power Company. GTM is enterprise field sales via competitive tendering and multi-year framework agreements, with a stated track record of 169+ projects, 2.8 million man-hours and 23 GW of installed generating capacity globally. Office locations span UK (Skelton, Seaham), Taiwan (Taipei) and the US (Virginia Beach), supporting operations across UK/Europe, the Americas and Asia-Pacific.
Revenue is not publicly disclosed; the company operates on project-based professional services pricing across framework agreements and discrete EPC sub-scopes. Management is led by Managing Director Sam Dowey, with divisional leads Peter Dinsdale (Electrical Engineering) and Will Sharrock (HV Management), and country leadership in Taiwan (Ray Tsao, Fiona Su). Customer concentration is moderate — concentrated by end-market (offshore wind) but diversified across a deep enterprise client base — and the business benefits from meaningful switching costs embedded in multi-year framework contracts and regulatory HV authorisations.
Correll Group firmographics
Firmographics- Name
- Correll Group
- Legal name
- Correll Group
- Website
- https://correllservices.com
- Company type
- Private
- Founded year
- 2013
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Correll Group (SPIE Wind Connect) is a UK-based specialist contractor delivering high-voltage cable installation, termination, testing, fault-finding, commissioning and 24/7 HV control-room services exclusively to offshore wind farm developers, EPC contractors and turbine manufacturers worldwide.
- Ownership category
- akta.pro rank
Correll Group industry classification
Industry- Product category
- Offshore Wind High-Voltage Services
- NAICS
- Power and Communication Line and Related Structures Construction (237130), Electrical Contractors and Other Wiring Installation Contractors (23821)
- SIC
- Water, Sewer, Pipeline, Comm & Power Line Construction (1623)
- akta.pro primary industry
- Transmission Interconnection & Line Works (Gen-Tie Lines, Overhead/Underground Lines) (EUAMAFAF)
- akta.pro secondary industries
- Wind Farm EPC & Balance of Plant Construction (Civil, Electrical, Substations) (EUAMACAF), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB)
Keywords
Where Correll Group is headquartered
LocationHeadquarters
- HQ city
- Skelton-in-cleveland
- HQ country
- United Kingdom
- HQ region
- Europe
Offices4 records
Markets served
Correll Group business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Others
Revenue model
- Project-based Professional Services: Services rendered on a project basis for offshore wind farm developers and EPC contractors. Revenue generated through cable installation, termination, testing, and HV commissioning services. Projects typically span several months with teams of technicians deployed on-site. Framework agreements with major developers (Ørsted, Vattenfall, Siemens Gamesa) provide recurring engagement models.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Correll Group product offering
Product offeringCore offering
Correll Group (operating as SPIE Wind Connect) provides specialist high-voltage cable services for offshore wind farms, including subsea cable pull-in installation, cable termination and jointing, cable fault location and dry repair, HV commissioning, operations and maintenance, and 24/7 HV control room monitoring. Services are delivered by deployed specialist HV technician teams authorised up to 400kV, supporting offshore wind developers, EPC contractors, and wind turbine manufacturers across the UK/Europe, the Americas, and Asia-Pacific.
Product overview
SPIE Wind Connect (formerly Correll Group) is a high-voltage services provider specializing in the offshore wind industry. The company operates through three main divisions: Cable Installation & Power Services Division (CIPS) handling cable pull-in operations; Electrical Engineering Division (CEE) providing termination, testing, and fiber optic cable services; and High Voltage Management Division (HV-M) delivering switching operations and authorized personnel services. The company offers six core service offerings: Cable Installation (Pull In), Cable Termination & Jointing, Cable Fault Location & Repair, Operations & Maintenance, HV Commissioning, and a 24/7 HV Control Room. The portfolio includes extensive experience with 66kV inter-array cable systems and provides services across the full lifecycle from installation through operations and maintenance.
Differentiator
Problem solved
Functional benefit
Brands
- Correll Electrical Engineering (CEE): Division focused on termination and testing of inter-array cables and export cables for offshore wind farms
- Correll Cable Installation & Power Services Division (CIPS)
- Correll High Voltage Management (CHVM/HV-M)
Products and services
- Cable Installation (Pull In)
Companies that use Correll Group
Customer profileNamed customers14 records
Segments3 records
Ideal customer profiles3 records
Correll Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Correll Group partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core.
- VattenfallcoreTwo multi-year Framework Agreements for Cable Testing and Fault Finding covering all existing and potential new build Vattenfall offshore wind farms in UK and Europe (excl. Germany) for an initial 5-year period. Covers HV Submarine Cable System fault pinpointing, cable condition monitoring, and testing before re-energization.
- Siemens Gamesa Renewable EnergycoreFramework Agreement (May 2022 to February 2023) for supply of High Voltage Installation Technicians and Authorised Persons (APs) to perform HV Terminations and HV Switching within Siemens Gamesa Wind Turbine Generators. Extended with APAC Framework Agreement from December 2025 for HV Services including Electrical Management Systems.
- ØrstedcoreMulti-year Framework Agreement covering Array Cable HV/FO Fault Finding, Diagnostics & Dry Repairs. Originally awarded for European locations in September 2021, extended in October 2023 to include UK, USA, and Taiwan operations. Covers export and array, offshore and onshore HV and Fibre Optic cable fault finding, diagnostics and dry repairs.
- DEME OffshorecorePrimary contractor for Dogger Bank Wind Farm phases A, B, and C. CEE contracted to complete 66kV inter-array cable termination & testing on Dogger Bank A (95 WTGs), Dogger Bank B, and Dogger Bank C (87 WTGs). Dogger Bank is the world's largest offshore wind farm at 3.6GW.
- Jan De Nul GroupcoreLong-standing partnership for offshore wind cable projects including Formosa 1, Formosa 2, Changhua Demonstration, Princes Amalia, and Thor OWF (72 WTGs for RWE). Jan De Nul awarded EPCI cable contracts by RWE in consortium with Hellenic Cables.
- Prysmian GroupcorePartnership for cable pull-in, termination and testing on multiple French and UK projects including Saint Nazaire, Fécamp, Hornsea 2, Neart Na Gaoithe, Courceulles-sur-Mer, Saint-Brieuc, and Gode Wind 3/Borkum Riffgrund 3.
- Seaway 7corePartnership for Taiwan offshore wind projects including Yunlin OWF, CFXD OWF, Moray West, and Baltyk II & III OWF in Poland. CEE awarded multiple contracts for termination and testing of 66kV inter-array cables.
- Asso.subseacorePartnership for cable pull-in operations on Vesterhav Nord and Syd (41 array + 4 export cables), Saint Brieuc OWF (62 WTGs + OSS), Kaskasi II, and Gode Wind 3/DolWin Kappa projects.
- Baltic PowercoreFramework Agreement (March 2025 to Present) for Client Representation Services to support the Baltic Power Offshore Wind Farm Project in Poland. Covers offshore and onshore activities with experienced Client Representatives deployed.
- Van OordcorePartnership for Windanker OWF (21 WTGs) and Hollandse Kust West VI OWF (52 WTGs) termination and testing projects. Van Oord is the global marine contractor for these Ecowende Wind Farm projects.
- Hellenic CablescorePartnership for South Fork OWF (New York's first offshore wind farm) and Revolution OWF (704MW, 65 WTGs). CEE delivered termination and testing services for inter-array cables using local unionised labour combined with EU experienced resource.
- Vineyard WindcoreFramework Agreement (January 2026, initial 5-year term with 3-year option) for comprehensive operational support including fault finding, corrective and preventative maintenance assistance, and pre-engineering activities on America's first large-scale offshore wind farm.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Correll Group competitors and assessment
Company assessmentBroad incumbents
- Nexans: Global cable manufacturer and installer with offshore wind subsea cable EPC capabilities including inter-array and export cable systems; broader than Correll but directly comparable on the cable installation and termination service line.
- Prysmian Group: World's largest cable manufacturer with end-to-end submarine cable EPC and installation services; acts both as a cable supplier and (in some projects) a competitor to specialist cable installers like Correll, with whom they partner on multiple French and UK offshore wind farms.
- NKT: Danish cable manufacturer and installer with submarine power cable solutions for offshore wind; competes with Prysmian and is comparable as a broader incumbent offering cable manufacturing plus installation/termination services.
- Boskalis: Large marine services contractor with offshore wind cable lay and balance-of-plant capabilities across European and Asian projects; broader portfolio than Correll but operates in the same specialist cable installation space.
Direct peers
- Van Oord: Dutch marine contractor with offshore wind cable installation and balance-of-plant capabilities; Correll has provided termination and testing services on Van Oord's Windanker and Hollandse Kust West VI projects, indicating overlapping technical and customer exposure.
- DEME Offshore: Tier-1 marine contractor for offshore wind balance-of-plant including cable installation, foundation, and turbine installation; Correll is contracted to DEME on Dogger Bank A/B/C, making them simultaneously a customer and a comparable subcontractor in the cable services layer.
- Jan De Nul Group: Marine contractor delivering cable installation, termination, and testing for offshore wind projects globally (Formosa, Changhua, Thor, Moray West). Correll has delivered services on multiple Jan De Nul-led projects, indicating highly comparable technical scope.
- Seaway 7: Subsea 7's offshore wind division and a direct peer; specialises in subsea cable installation and termination for offshore wind farms across Europe, Asia Pacific (Taiwan Yunlin/CFXD), and the US, with overlapping customer set including DEME and Jan De Nul.
- JDR Cable Systems: UK-based subsea cable manufacturer and termination specialist serving offshore wind; comparable scope of inter-array and export cable systems, with overlap on customer base (EPCs installing UK and European offshore wind).
- Global Marine Systems: Subsea cable installation and maintenance provider active in offshore wind (Kincardine Floating OWF, Block Island repair); a direct comparable on cable installation and fault repair services, and an existing Correll customer.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Correll Group social profiles
Digital presenceCorrell Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Correll Group leadership team
Management profileNumber of profiles
Profiles5 records
Correll Group subsidiaries and ownership
Company hierarchySubsidiaries3 records
Correll Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Correll Group M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Correll Group
What does Correll Group do?
Correll Group (operating as SPIE Wind Connect) provides specialist high-voltage cable services for offshore wind farms, including subsea cable pull-in installation, cable termination and jointing, cable fault location and dry repair, HV commissioning, operations and maintenance, and 24/7 HV control room monitoring. Services are delivered by deployed specialist HV technician teams authorised up to 400kV, supporting offshore wind developers, EPC contractors, and wind turbine manufacturers across the UK/Europe, the Americas, and Asia-Pacific.
Is Correll Group a public or private company?
Correll Group is a private company. It is classified as corporate owned and is currently operating.
When was Correll Group founded?
Correll Group was founded in 2013. It employs 11 to 50 people.
Where is Correll Group based?
Correll Group is headquartered in Skelton-in-cleveland, United Kingdom, in the Europe region.
How does Correll Group make money?
One revenue line is on record: project-based Professional Services.
Who are Correll Group's main competitors?
Broad incumbents on record are Nexans, Prysmian Group, NKT and Boskalis. Direct peers are Van Oord, DEME Offshore, Jan De Nul Group, Seaway 7, JDR Cable Systems and Global Marine Systems.
Does Correll Group have an API?
No public API is recorded for Correll Group.
What industry is Correll Group in?
Correll Group's product category is Offshore Wind High-Voltage Services. Its primary akta.pro industry code is EUAMAFAF, Transmission Interconnection & Line Works (Gen-Tie Lines, Overhead/Underground Lines), with a secondary code of EUAMACAF, Wind Farm EPC & Balance of Plant Construction (Civil, Electrical, Substations). Its NAICS code is 237130 and its SIC code is 1623.