The people who switch it on.
ECS Commissioning delivers specialist commissioning site services for the electricity industry — from offshore wind and HVDC converter stations to data centres and transmission networks. We take projects from cold commissioning to first energisation.
Where we work
Built for the grid's hardest environments
Commissioning is where design meets reality. We operate at the sharp end of the energy transition — wherever high-voltage plant has to be proven, tested and energised.
Offshore Windfarms
Turbine, array and export system commissioning support, offshore-ready personnel.
Onshore & Offshore Substations
AIS and GIS substation commissioning from installation checks to energisation.
HVDC Converter Stations
Specialist support for converter station systems, controls and auxiliaries.
Data Centres
Critical power commissioning where uptime is non-negotiable.
Battery Energy Storage Systems
Commissioning of grid-scale battery storage, from cells to grid connection.
Transmission & Distribution
Network reinforcement, upgrades and new-build T&D projects.
What we do
A niche we know inside out
We specialise in one thing: commissioning. That focus means the right people, the right test equipment and the right reporting — without the overhead of a generalist contractor.
Key Commissioning Personnel
Mobilised on short noticeCommissioning managers, lead engineers and technicians embedded into your project team. We supply the key personnel who hold a commissioning programme together — site-ready and proven on major energy projects.
Test Equipment Rental
Calibrated & project-readyA fleet of commissioning test equipment available to rent, so your programme is never waiting on kit. Supplied standalone or with an engineer who knows how to get the most out of it. Available equipment includes:
- Insulation Resistance Tester
- Circuit Breaker Analyzer
- Micro-Ohmmeter
- CT Analyzer
- Injection Test Set
- OTDR Test Set
- VLF Test Set
- Cable Fault Locator
- Power Quality Meter
AD-HOC HV Fault Finding
Rapid responseWhen an HV network misbehaves, time is everything. We provide rapid-response fault-finding support on high-voltage networks — diagnosis, testing and a clear path back to service.
Progress Reporting
Daily / weekly / monthlyCommissioning lives and dies on visibility. We deliver structured daily, weekly and monthly progress reporting that gives clients and stakeholders a true picture of where the programme stands.
Every assignment is backed by our back-office engineering team — providing engineering support to all project personnel, so the expertise on site is never working alone.
Two ways to work with us
Individual engineers, or the full commissioning service
Need to strengthen an existing team? We supply key personnel. Need the whole thing run for you? Our full service delivers a complete, independent commissioning function — acting as the developer's eyes and ears from construction through to handover to O&M.
Commissioning Engineers
Specialist commissioning managers, engineers and technicians embedded into your team — by discipline, on short notice, for as long as you need them.
Request Commissioning EngineerFull Commissioning Service
A fully autonomous, independent commissioning service. We build the team, run the programme, report the progress and represent your interests at every stage — right through to operating the plant until handover.
Request Commissioning ServiceDedicated Project Manager
A single point of accountability who builds and leads the commissioning team around your project's needs.
Proven Processes & Procedures
A tried and tested set of processes, procedures and manuals — refined on real projects, ready from day one.
Client Reporting System
A structured reporting system giving the client full visibility of commissioning progress at all times.
Autonomous & Independent
A self-sufficient service that runs the commissioning scope with full autonomy and independence.
Commissioning Oversight & Compliance
Oversight on the client's behalf, with specialist reviews of commissioning procedures and reports to ensure full compliance with the employer's requirements.
The Developer's Eyes & Ears
We represent the client throughout the commissioning stages of the project — from construction through to handover to O&M.
Plant Operation & Interim O&M
We can operate the plant until handover to O&M, including interim O&M — managing both scheduled maintenance and unplanned maintenance.
AI Integration
AI-enhanced commissioning support — accelerating reporting, document review and progress analytics across the programme.
Specialist disciplines
Specialist Engineers for every system
Our specialists cover the full spread of systems a modern energy project has to commission — presented here the way we run them: as a schedule.
TP141 Advanced Commissioning Engineers
We provide TP141 Advanced Commissioning Engineers in line with NGET requirements — giving National Grid projects assured, compliant commissioning from engineers who hold the relevant authorisations.
How we work
Visibility, from punch list to power-on
Clear, honest reporting is the backbone of a successful commissioning programme — it's how risk is seen early and decisions are made on facts, not assumptions. Every ECS assignment comes with structured progress reporting at the cadence your project needs: daily on the tools, weekly for the project team, monthly for the board — with completion tracking and visual dashboards as standard.
Design & Specification Review
Review of design and specifications against project and employer's requirements.
Procedure Development & Review
Commissioning procedure development and/or review against project requirements.
Cold Commissioning
De-energised testing of individual equipment and systems.
System Testing
Functional and integrated testing across systems.
Energisation
Controlled, staged energisation of HV plant.
Trial Operation
Performance proving and handover to operations.
Interim Operations
Managing and operating the plant, including scheduled maintenance, until handover to O&M.
OFTO Transactions
Assisting with OFTO transactions through to transfer of ownership.
Track record
Project experience
Examples of projects our engineers have supported — across offshore wind, HVDC, transmission and heavy industry, in the UK and internationally.
Wikinger Offshore Windfarm
GermanyEast Anglia 1 Offshore Windfarm
UKSt-Brieuc Offshore Windfarm
FranceEast Anglia 3 HVDC Converter Stations & Offshore Windfarm
UKHumber Oil Refinery
UKNational Grid Onshore Substations
UKFonterra Milk Processing Plant
New ZealandClients
Client List
Work with us
Join the ECS commissioning network
We're always looking for experienced commissioning engineers and specialists across HVDC/AC, mechanical, LV electrical, HVAC, SCADA and fibre optics. If you're a specialist who thrives at the sharp end of major energy projects — worldwide, onshore and offshore — we'd like to hear from you. Register your interest and send us your CV.
Mobilise ECS
Need commissioning engineers on site? Talk to us today.
Whether you need a single specialist, a full commissioning team, test equipment or rapid HV fault-finding support — we can mobilise on short notice.
Philip Jones — Director
Mobile: +44 7557 331 915
Email: team@ecscommissioning.com