ONRG
ONRG provides high voltage network management, safety rules, consultancy, and substation services for offshore wind farms and transmission systems. Acquired by OEG in 2024, it operates as the parent company's HV services division.
- Company typePrivate
- Founded2009
- HeadquartersBuxhall, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What ONRG does
ONRG is a UK-based specialist in high voltage (HV) network management for offshore wind farms and transmission systems, founded in 2009 and headquartered in Buxhall with an operations support facility in Edinburgh. The company provides end-to-end solutions spanning the design, build, and operation of HV networks, substations, and associated equipment, delivered through an integrated suite of services that includes safety rules, inspection/maintenance/repair (IMR) and fault management, HV training, consultancy, and project crewing. Its operational backbone is a 24/7 monitoring and operations centre that provides continuous asset oversight for client HV infrastructure, with the explicit objective of prioritizing safety and environmental sustainability.
The company's technology is centered on specialized HV engineering expertise rather than a unified software platform. Its proprietary element is the industry-leading 24/7 control room, which manages client HV assets through the construction-to-operations transition and subsequent ownership changes. ONRG serves enterprise offshore wind developers and operators, with named engagements including Iberdrola (East Anglia ONE) and the Changfang & Xidao wind project, indicating penetration into both European and Asia-Pacific offshore wind markets. A secondary customer segment is offshore transmission system operators requiring specialized HV expertise.
In 2024, ONRG was acquired by OEG (Ocean Energy Group), a global energy solutions provider with operations spanning more than 65 countries on six continents. The acquisition integrated ONRG's HV capabilities into OEG's broader offshore energy portfolio, which includes subsea services, vessels, offshore equipment, fabrication, and training. The combined platform monetizes primarily through professional services engagements, with revenue tied to project crewing, training, consultancy, and ongoing asset management. Pricing is not publicly disclosed and is tailored to individual client project needs, consistent with an enterprise field-sales motion targeting major offshore wind developers and operators.
ONRG firmographics
Firmographics- Name
- ONRG
- Legal name
- ONRG
- Website
- https://onrg.co.uk
- Company type
- Private
- Founded year
- 2009
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- ONRG provides high voltage network management, safety rules, consultancy, and substation services for offshore wind farms and transmission systems. Acquired by OEG in 2024, it operates as the parent company's HV services division.
- Ownership category
- akta.pro rank
ONRG industry classification
Industry- Product category
- High Voltage Network Management Services for Offshore Wind
- NAICS
- Electric Bulk Power Transmission and Control (221121), Electric Power Transmission, Control, and Distribution (22112), Wind Electric Power Generation (221115)
- SIC
- Electric Services (4911)
- akta.pro primary industry
- Electrical Systems O&M (Substations, Transformers, Switchgear, Protection & Controls) (EUAMAGAH)
- akta.pro secondary industries
- Transmission & Substation O&M (HV Equipment Maintenance) (EUAEAGAD), Protection, control & substation automation engineering (relay/RTU/IEC 61850) (EUADAKAD), Substations, Transformers & Grid Step-Up Facilities (EHV Substations, GSU Transformers) (EUAMAFAE), Substation Automation & Digital Substations (IEC 61850) Integration Services (EUAEANAD)
Keywords
Where ONRG is headquartered
LocationHeadquarters
- HQ city
- Buxhall
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
ONRG business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- High Voltage Network Services: Provides end-to-end solutions for the design, build and operation of high voltage networks, substations and associated equipment from before construction through to operations. Revenue is generated through professional services engagements including project crewing, training, consultancy, and ongoing asset management.
Go-to-market motion1 record
Distribution channels1 record
ONRG product offering
Product offeringCore offering
ONRG provides end-to-end high voltage network management services for offshore wind farms and transmission systems. Its offerings span the design, build, and operation of HV networks, substations, and associated equipment from pre-construction through to operations and maintenance, supported by a 24/7 Monitoring and Operations Centre and complemented by specialized safety rules, IMR/fault management, training, consultancy, and project crewing services.
Product overview
ONRG, acquired by OEG in 2024, provides a comprehensive suite of high voltage services for wind farms and offshore energy projects. The offering is organized as integrated service modules rather than a unified software platform. Core offerings include High Voltage Network Management (covering design, build, and operation of HV networks and substations) supported by a 24/7 Monitoring and Operations Centre. These are complemented by specialized services including Safety Rules, IMR and Fault Management, Training, Consultancy, and Project Crewing. The portfolio enables seamless end-to-end support from pre-construction through to operations and maintenance, with services prioritizing safety and environmental sustainability.
Differentiator
Problem solved
Functional benefit
Products and services
- High Voltage Network Management End-to-end solutions for the design, build, and operation of high voltage networks, substations, and associated equipment for wind farms, spanning from pre-construction through to operations and maintenance. Delivered to offshore wind farm developers and operators.
- 24/7 Monitoring and Operations Centre Continuous 24/7 monitoring and operations management service for high voltage assets, prioritizing safety and environmental sustainability while efficiently managing clients' high voltage assets offshore.
- Safety Rules Services Specialized safety rules services for high voltage network management ensuring compliance with safety protocols for offshore wind and transmission asset operators.
- High Voltage IMR and Fault Management Inspection, maintenance, repair, and fault management services for high voltage infrastructure and equipment serving offshore wind farm and transmission operators.
- High Voltage Training Comprehensive training services for HV engineers and personnel working on high voltage networks and offshore wind projects.
- High Voltage Consultancy Expert consultancy services providing transparent and individually tailored solutions for high voltage project needs for offshore wind and transmission clients.
- Project Crewing Specialized staffing solutions providing project crewing of high voltage engineers and technical personnel for offshore wind and energy projects.
Quantifiable outcome
- Smooth transition between lifecycle stages and optimal asset performance
Companies that use ONRG
Customer profileNamed customers3 records
Segments2 records
Ideal customer profiles1 record
ONRG technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
ONRG partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- OEGcoreOEG acquired ONRG in 2024, integrating ONRG's high voltage network management capabilities into OEG's global energy solutions portfolio. This acquisition enables OEG to offer complete end-to-end high voltage solutions spanning design, build, and operations across offshore wind farms and transmission systems worldwide.
Scale indicators2 records
Recent moves5 records
Expansion highlights6 records
ONRG competitors and assessment
Company assessmentRegional players
- Aibel: Aibel is a Norwegian engineering and construction firm with a dedicated offshore wind and HV substation business delivering platforms and HVDC connections in Northern Europe. Comparable for HV substation design and delivery scope on offshore wind farms, primarily serving the Nordic and Northern European market.
Broad incumbents
- Worley: Worley provides engineering, procurement, and construction services to the energy sector including offshore wind and HV infrastructure. Comparable as a broad incumbent with overlapping substation, protection, and renewable energy EPC services delivered to similar enterprise customers.
- Wood Group: Wood is a global engineering and energy services firm with significant HV, substation, and offshore wind services capabilities. Comparable as a broad incumbent offering HV network design, build, and O&M across the offshore wind value chain, though it is far larger and not specialized solely in HV.
- Balfour Beatty: Balfour Beatty's Power Transmission & Distribution business delivers HV substation construction, protection systems, and grid infrastructure in the UK and globally. Comparable as a major HV infrastructure contractor serving UK utilities and renewable developers with overlapping T&D scope.
- Hitachi Energy: Hitachi Energy manufactures HV equipment and provides substation integration, automation, and lifecycle services for transmission and offshore wind. Comparable as an HV systems provider with deep substation automation expertise (IEC 61850), competing for design and commissioning work on offshore wind substations.
- Siemens Energy: Siemens Energy supplies HV transmission technology, offshore wind grid connections, and substation solutions globally. Comparable as a major OEM with bundled HV and substation services that increasingly compete for the same offshore wind HV commissioning and operations scope ONRG serves.
Direct peers
- TES Group: TES Group delivers HV engineering, commissioning, and consultancy services to renewable and conventional power projects. Comparable as a specialist HV services firm targeting similar offshore wind and utility customers with comparable project-based professional services delivery.
- Spencer Group: Spencer Group's Energy Division delivers HV substation construction, balance of plant, and grid connection services for UK renewable and infrastructure projects. Comparable as a specialist UK-based HV and substation contractor competing for similar offshore wind and grid projects.
- High Voltage Marine Services (HVMS): HVMS is a specialist provider of HV services to the offshore wind sector, covering cable termination, jointing, commissioning, and HV maintenance. Comparable as a direct specialist peer focused exclusively on offshore wind HV with a similar asset-light professional services model.
- Synergy Offshore: Synergy Offshore provides HV engineering, consultancy, and O&M services to offshore wind farm operators in the UK and Europe. Comparable as a direct specialist peer with similar HV training, safety rules, and operations support offerings for wind farm developers and operators.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
ONRG social profiles
Digital presenceONRG financial estimates
Financial estimateRevenue estimate
Valuation estimate
ONRG leadership team
Management profileNumber of profiles
ONRG funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ONRG 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 ONRG
What does ONRG do?
ONRG provides end-to-end high voltage network management services for offshore wind farms and transmission systems. Its offerings span the design, build, and operation of HV networks, substations, and associated equipment from pre-construction through to operations and maintenance, supported by a 24/7 Monitoring and Operations Centre and complemented by specialized safety rules, IMR/fault management, training, consultancy, and project crewing services.
Is ONRG a public or private company?
ONRG is a private company. It is classified as corporate owned and is currently operating.
When was ONRG founded?
ONRG was founded in 2009. It employs 11 to 50 people.
Where is ONRG based?
ONRG is headquartered in Buxhall, United Kingdom, in the Europe region.
How does ONRG make money?
One revenue line is on record: high Voltage Network Services.
Who are ONRG's main competitors?
Aibel is listed as a regional player. Broad incumbents are Worley, Wood Group, Balfour Beatty, Hitachi Energy and Siemens Energy. Direct peers are TES Group, Spencer Group, High Voltage Marine Services (HVMS) and Synergy Offshore.
Does ONRG have an API?
No public API is recorded for ONRG.
What industry is ONRG in?
ONRG's product category is High Voltage Network Management Services for Offshore Wind. Its primary akta.pro industry code is EUAMAGAH, Electrical Systems O&M (Substations, Transformers, Switchgear, Protection & Controls), with a secondary code of EUAEAGAD, Transmission & Substation O&M (HV Equipment Maintenance). Its NAICS code is 221121 and its SIC code is 4911.