Ascendera Advisory · Exclusive practice · OHTL

Power lines, delivered by people who have built them.

The Overhead Transmission Lines practice supports power line projects from planning to energisation: how towers are built, how conductors are strung, and how crews work safely at height. It is led by the founder of Innovecta Ltd, a career linesman with more than two decades on and around the towers before advising on them.

Exclusive partnership
Planning to energisation
132–500 kV, UK and international

The practice

Transmission work forgives nothing. Neither do we.

Overhead line delivery combines height, stored energy, heavy plant, weather and logistics, often hundreds of kilometres from the nearest town. The margin for error is thin, and the difference between a smooth project and a troubled one is rarely the engineering. It is the quality of planning, supervision and crew competence on the ground. That is where this practice works.

Advice from the tower, not the textbook

Every recommendation comes from someone who has erected towers, strung conductors and worked the weather windows himself. Practical, buildable and honest about what crews will actually do.

The whole lifecycle, one standard

From route planning and foundations to stringing, energisation and handover, the same person accountable across every phase, so nothing gets lost between stages.

Crews that leave stronger

Training and assessment are built into the work, drawing on two decades of the practice lead training crews and building the methods they work to, including adapted training delivered on live projects in the Kingdom. Your crews finish the project more capable than they started it.

What it offers

Six service lines. One accountable lead.

Each can stand alone or combine into full lifecycle support. Every engagement is scoped on evidence and led by the practice lead personally.

Planning and route assessment

Foundations, access, logistics and sequencing, reviewed with a builder's eye. Problems are cheapest on paper, and that is where we catch them.

Tower erection and assembly

Erection methods, supervision structures and lift planning for steelwork at height, from stub setting to final torque, checked against how crews actually work.

Stringing and tensioning

Conductor stringing, sagging and clipping-in: puller and tensioner setups, stringing blocks, crossing plans and the discipline that keeps conductors, and people, safe.

Working at height and rescue

Fall protection systems, climbing discipline and rescue readiness. If someone gets into difficulty up a tower, your crew must be able to get them down. We make sure they can.

Energisation readiness

Pre-energisation inspections, documentation and handover, so the line is provably ready before it goes live, not assumed ready.

Workforce training and assessment

Academy-grade training and competence assessment for linesmen and crews, from new starters to experienced hands, with evidence of what every person can do.

On the tools · Live delivery support

The practice lead · Exclusive partnership

Led by someone who has worked the towers.

Lee Stevenson has spent more than two decades in overhead transmission lines, from the tools to the boardroom. He learned the trade on the towers in the UK, erecting steel and stringing conductors in every weather the job can throw at you, and went on to lead crews and advise on live projects across every major high-voltage system, from 132 to 500 kV.

He is the founder, Managing Director and Technical Consultant of Innovecta Ltd, the UK-based OHTL consultancy whose work spans the UK and Ireland, Europe, the Middle East and Central Asia. Through Innovecta he supports utilities, developers and EPC contractors with constructability reviews, delivery support, contractor assessments, incident investigation and training. His Innovecta Technical Library holds more than 455 field-proven OHTL documents: work guides, risk assessments, method statements, toolbox talks and training modules, written from experience rather than theory.

Lee knows this market first hand. His recent delivery support and contractor training includes major high-voltage transmission projects here in the Kingdom, where he has walked the routes, reviewed the methods and trained the crews building them.

Lee works with Ascendera under an exclusive partnership. In the Kingdom, he works only with our clients, on our engagements, and he leads them personally. When he tells you how a crew will behave on a tower, it is because he has been that crew.

Advice from someone who has done the job himself, at height, for real.

How an engagement runs

The Ascendera model, applied on the line.

Start with your data

Your programme, your designs, your method statements and your incident history, read before any recommendation. The route comes from your project, not from a template.

Scoped on evidence

We price on value and scope on what the evidence shows. If a single phase needs attention, we say so. If the risk is systemic, you see exactly why.

Delivered on site, with your crews

The practice lead works alongside your teams in the field, not from a distant office. Capability transfers crew to crew, the way the trade has always been taught.