As part of the Power division at IES Utility Solutions, our Overhead Line services cover the full asset lifecycle, from design and construction through to ongoing maintenance. We work across voltages from LV to 400kV, delivering solutions on both wooden pole and steel lattice tower systems.
Our teams help ensure reliable power transmission across all terrains, supporting the resilience and performance of the electricity network.
We caught up with Extra Mile Awards nominee Colin Donnelly, one of our Project Managers within the Power division who looks after some of the maintenance portfolio projects.
“Within our maintenance portfolio, the hazard rectification and defects programme plays a critical role in maintaining the safety, reliability and regulatory compliance of the overhead line network on behalf of Scottish Power Energy Networks across North Wales and the Dee Valley.”
The programme includes the installation and replacement of key safety and hazard signs such as Danger of Death (DOD) plates, anti-climbing devices (ACDs), Cable Guards and general compliance works across the network.
Colin said, “We currently, 20–30 dedicated teams are deployed on the ground each day, to deliver the programme.” This results in a consistently high weekly output, driven by experienced operatives working efficiently to identify, manage and clear safety‑critical concerns in a timely manner.
As with all of our projects at IES the hazards and defect rectification works are all carefully planned and issued to teams. Responsible for the day-to-day running of the programme, Colin coordinate multiple teams across North Wales and the Dee Valley, making sure everyone is deployed correctly each morning with the right work packs, access, and information to carry out the works safely and efficiently.
“I oversee the delivery side of the operation, ensuring works are planned properly, completed to the required standard, and aligned with programme targets. Throughout the day, I monitor team outputs, track progress, and adjust resources where needed to keep everything moving.”
Quality is a big focus, every defect is subject to a robust quality assurance process. “We review before‑and‑after photos captured for each defect to confirm that all works meet the required technical specifications and safety standards. This approach provides full visibility and traceability, giving confidence that compliance has been achieved at each individual defect location.” said Colin.
If the teams on site come across any operational issues on site, Colin is there to support the teams ensuring that the communication is clear between those in the field, back office and the client.
Once teams complete works on site, and Colin and the team review the activity in real time and ensuring the correct costings are accurately applied. The works are then seamlessly handed over to the IES commercial team for final validation and payment, maintaining control and compliance at every stage of the process.
“As we now start to gear up for our move into Scotland, my focus is on making sure these same standards, processes, and communication channels are in place from day one to support a smooth and professional rollout.”
Combining the expertise of our skilled operatives on site with thorough planning and oversight from our project management and office teams, IES is able to identify, prioritise and resolve hazards efficiently, preventing defects from escalating and ensuring network safety is maintained.
We are looking forward to catching up with Colin and the team later on this year as the programme expands up North.
Having joined IES Utility Solutions at 17, Garron Donnelly is now a qualified overhead linesman after just 10 months working through our Apprenticeship programme. Garron was the youngest in his cohort, but quickly earned the respect of his peers and mentors through his work ethic, attitude and determination.
Garron’s journey to this point hasn’t been easy; after being diagnosed with leukaemia just before his seventh birthday, he spent over five years undergoing intensive treatment at the Children’s Hospital in Belfast. At one point, the effects of his illness left him unable to walk, but Garron pushed through, teaching himself to walk again. Following all his treatments and challenges that life through at him before even completing school, Garron went into the world of work looking for a hands-on role he could get stuck into.
“After looking for a hands-on career with real progression, the IES apprenticeship stood out as a great opportunity for me to learn on the job whilst gaining recognised qualifications,” said Garron.
Since joining IES Garron has worked on a wide range of live projects and has seen first-hand the impact this has on the public, particularly during restoration and fault response projects. When asked what his favourite type of project was to work on, he explained: “I really enjoy working on the overhead line projects, particularly if there is some complexity involved. I love the problem-solving element of them.”
“It’s a great feeling to now be qualified. There’s a real sense of achievement after putting in the time and effort throughout the apprenticeship. It also brings more responsibility in my day-to-day role which has been really exciting for me.”
“Garron is the kind of lad who just wants to be out there doing the work,” says Conor O’Neill, Director of Power at IES. “He doesn’t look for attention. He just gives 100% every day — and that attitude is rare, especially in someone so young.”
When we asked what advice, he would give to anyone considering becoming a linesman Garron said: “Be prepared to work hard, stay focused on safety at all times, and take every opportunity to learn from experienced colleagues around you.”
He may not ask for recognition, but Garron’s story deserves it. In a world full of noise, he’s a reminder that real strength often comes from those who simply keep going — not for praise, but because they believe in the value of resilience, humility and heart. Having Garron as part of the IES team is a real privilege, and we look forward to seeing him continue to grow.
As Storm Dave swept across the UK over the bank holiday weekend, it highlighted another excellent team effort from IES crews who stepped up to support communities affected by the storm.
Special thanks go to IES colleagues Carwyn Ellis and John Lawley, who, while inspecting lines in Hartford, Northwich, came across residents attempting to clear a large fallen tree blocking a busy road.
After ensuring everyone was safe, they stepped in to help, cutting the tree into manageable sections and coordinating local volunteers to clear the road efficiently and reopen it to traffic.
A local resident who was there over the weekend commended Carwyn and John saying, “Their work was precise, and efficient. The community spirit they demonstrated on behalf of IES Utilities was both unusual and truly commendable.”
This is a great example of the IES team putting their skills and knowledge to help the wider community. Giving up time over the bank holiday weekend to make sure that communities stayed connected.
We want to say a massive thank you to everyone involved. Your efforts truly embody the spirit of the IES promise, through collaboration, agility and service that drives our industry.
Working alongside Equans in Germany, we delivered specialist 220kV subsea and transition joining works for the Ostwind offshore transmission system, ensuring a secure power export from offshore generation to the German grid.
Scope
This project included the installation of subsea joints on offshore export cables, the construction of transition joints between subsea and land cable sections, and the execution of all jointing activities in line with OEM procedures and international HV standards. Providing support to the wider transmission installation and commissioning programme.
Challenges
One of the key elements of work was managing the complex interfaces between the subsea and land cable systems, as they demand flawless alignment and preparation to ensure the transition jointing happened smoothly. The team had to follow strict compliance with the NKT and OEM-specific jointing methodologies alongside elevated safety and quality requirements typical of German high-voltage transmission projects.
Approach
To carry out the highly skilled project we deployed our senior, fully certified jointers trained in 220 kV subsea and transition jointing.
Outcomes and benefits to the client
As a result our team completed a successful installation of all 220 kV subsea and transition joints, demonstrating our capability in delivering high-voltage works for major European grid projects.
IES Utilities Group is pleased to announce that, as of Q1 2026, its operating company IES Integral Energy Services will now trade under the new name IES Utility Solutions.
This change reflects the continued evolution and growth of the business, ensuring that our trading name more clearly represents the sectors in which we operate and the services we deliver across the UK’s critical utility and multi‑infrastructure networks.
Why the change?
The updated name – IES Utility Solutions – provides a clearer and more accurate expression of our capabilities. It better communicates who we are, what we do, and the value we bring to clients across power, gas, water, telecoms and emerging infrastructure markets.
As our service offering has expanded, the previous name no longer fully represented the breadth of our work. The new name strengthens alignment between our brand and our technical delivery, helping clients, partners and stakeholders immediately understand the specialist utility engineering expertise we provide.
A positive step for our future
This name change supports our long‑term strategy:
While our name is changing, our commitment to high‑quality delivery, safety, engineering excellence and trusted partnerships remains exactly the same.
A message of thanks
We would like to extend our sincere thanks to our clients, partners and framework stakeholders across the sectors we serve. Your continued support has played an important role in our growth, and we look forward to strengthening those relationships as we move into this next chapter.
For further information or updated brand assets, please contact the IES Utilities Group Communications Team.
This month we successfully completed a complex infrastructure deconstruction project of a redundant gas pipework and bridge structure in Lincoln, spanning both the Network Rail lines and historic Foss Dyke Canal.
Scope
IES were appointed as the principal contractors, to deliver the deconstruction of the redundant gas pipework being supported by specialist subcontractors.
Challenges
Due to the nature of the sensitive location and complexity of infrastructure involved extensive pre-construction planning and stakeholder coordination was required.
The team needed to secure approvals and permissions were required from multiple organisations including Environment Agency, Canal & River Trust and Network Rail prior to any work commencing on site.
The planning stage involved significant collaboration to ensure all technical, environmental, and safety requirements were satisfied before the deconstruction began.
Approach
Once construction began, the works progressed smoothly, the IES team were supported by Taziker as specialist subcontractor, with all works taking place on a Saturday – Sunday night to minimise disruption.
Through careful planning and strong communication between all parties, ensured that the works were delivered safely and efficiently, while maintaining strict controls around the railway and canal infrastructure.
Outcomes
Through effective collaboration and detailed planning, the project was completed safely and within the agreed programme. Successfully removing redundant infrastructure while protecting surrounding assets and environments.
This project demonstrates the importance of early stakeholder engagement, technical expertise, and coordinated delivery when working within complex infrastructure environments.
We’re proud to share that we’ve successfully completed an eight-month remedial works programme at the Merkur Offshore Wind Farm, Germany – one of the leading offshore wind providers in the German North Sea.
The project focused on strengthening the 33 kV cable system at the offshore substation, improving insulation coordination and transient overvoltage protection — all delivered without any modifications to existing MV GIS or backup generator set transformers.
Scope
Flashovers were observed during switching operations at the 33 kV backup generator set transformers on the Merkur Offshore Substation.
These events indicated an elevated risk of transient over voltages affecting the medium voltage cable system, particularly at the interfaces with the 33 kV shunt reactors located in Rooms L201 and L202.
If left unaddressed, the condition presented a risk to system integrity, operational reliability, and equipment safety, with potential implications for unplanned outages and asset damage in a challenging offshore environment.
Approach & Challenges
A targeted remedial solution was developed to improve insulation coordination and overvoltage protection without requiring modifications to the existing MV GIS or backup generator set transformers.
The scope of works included:
All works were executed offshore using CTV and helicopter access, carefully planned around weather constraints. Activities were delivered in full compliance with German electrical safety regulations, GWO certification requirements, and site-specific RAMS.
Strict safety controls were applied throughout, including full LOTO procedures, verification of dead systems, and earthing and short circuiting prior to work execution.
Following termination, the 33 kV cables were pressure tested using VLF at 3 × U₀ (approximately 57 kV DC) for 60 minutes, with surge arresters temporarily disconnected. Testing confirmed the electrical integrity of the cable system.
Outcomes
The remedial works significantly reduced the risk of future flashovers, providing enhanced protection against transient over voltages at the shunt reactor interfaces and improving overall system resilience.
This World Water Day, we’re shining a spotlight on the innovative work within our Water Division at IES Utilities Solutions. Work that helps shape the future of clean, reliable water supply in the UK.
With increasing pressure to reduce environmental impact, improve water quality, maintain ageing assets, and deliver better customer experiences, the water sector is facing some of its most significant challenges to date. Over the past year we’ve successfully been tackling these head-on by introducing the use of Comprex® Impulse Cleaning Technology; a proven, trenchless pipe-cleaning solution widely used across Europe and now being deployed in the UK with excellent results.
Traditional pipe-cleaning methods such as scraping or high‑volume flushing can be resource-intensive, disruptive, and environmentally costly. Comprex® offers a modern alternative: a digitally controlled system that uses precise pulses of medical‑grade air and water to clean pipes safely, efficiently, and with minimal water use. This low-disruption, high-performance system removes sediment, biofilms, and mineral deposits from pressurised water pipes without the need for chemicals, excavation, or high-water use.
We saw this firsthand at our pilot project with Northumbrian Water at Honey Hill, Northumberland, which demonstrated the step-change potential of this technology.
During the pilot we saw:
As a result in this project, we saw a 2,000‑metre cast‑iron main laid in 1922, Comprex® restored performance, removed biofilms and mineral deposits, and brought the pipe back into service, all without excavation, chemicals, or extended operational shutdowns.
As the water sector continues to focus on resilience, environmental protection, and customer outcomes. We will continue to work with innovations like Comprex® to help our clients move forward with confidence.
Read the full case study for Honey Hill Here: Honey Hill Water Case Study
Scope
SSE Renewables and NKT faced a critical outage at the Beatrice Offshore Windfarm in Caithness, Scotland, when one of the site’s two 220kV subsea export cables unexpectedly failed. The incident cut the windfarm’s transmission capacity by 50%, placing energy supply for more than 450,000 households at risk and creating major commercial and operational exposure for the asset owners.
To restore full transmission capability as quickly as possible, the client required a repair partner capable of delivering a technically complex subsea intervention within an extremely compressed timeframe. IES Utilities Group was engaged by NKT to deliver a fully managed turnkey repair solution.
Approach
IES deployed an integrated engineering, logistics, and offshore operations strategy designed to overcome bottlenecks and accelerate the repair window. The approach focused on rapid mobilisation, advanced subsea handling technologies, and tight coordination between all stakeholders.
Key elements of the approach included:
Delivery
Mobilisation was achieved within six days, with offshore works completed just 38 days from contract signing. The repair programme combined advanced subsea technology, coordinated project governance, and efficient cable handling to drastically reduce operational downtime and ensure quality and safety standards throughout the intervention.
Outcome
Client Benefits
This week, our teams have been working in Essex, completing protection works for Cadent Gas within a Vehicle Restraint System (VRS) area at Stansted Airport.
The site sits in the airport’s main air‑cargo hub, which is a busy industrial estate with constant movements of HGVs, cargo trucks and service vehicles. Because so many large vehicles operate in tight spaces, the area is extremely traffic‑sensitive and required careful planning to ensure safety and avoid disruption.
This was a full design-and-build project for our teams. As part of the design phase, we carried out a detailed risk assessment using Department for Transport guidance and UK Roads Liaison Group standards. This allowed us to understand the level of risk posed by local traffic and select the most appropriate barrier system for the location.
Our teams worked closely with all stakeholders to agree the final design. This included securing approval from Manchester Airport Group (site owners) for a solution that would provide robust protection for the gas governor while keeping the impact on road users to a minimum and reducing disruption during installation.
Our teams installed eight heavy-duty safety bollards around the existing gas governor to safeguard critical gas infrastructure from potential vehicle impact.
The works were delivered by our operations team, led by Andy Magor, within the highly controlled airport environment. All safety procedures were strictly followed, and the project was completed ahead of schedule.
Planning had presented additional challenges due to limited access windows and the presence of numerous underground services. Despite the project’s relatively small scale, we approached the pre‑construction phase with the same level of detail and diligence as a major scheme, ensuring all approvals, safety checks and service investigations were completed before work began.
Through thorough planning and professional delivery, IES completed the installation demonstrating the high standard of service we bring to every project, regardless of size.
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