TriEX Limited
Bringing the Energy to Business
From the beginning, local entrepreneur Mark McGillion carried a bold ambition – to create a world-class company, built on strong values, powered by people who believed in making a difference, delivering for the worlds most trusted companies.
That idea grew into Triex, an award-winning electrical infrastructure specialist delivering complex projects in Renewables, Data Centres and Utilities across the UK and Europe. But behind the success is a journey of determination, opportunity, support and vision.
When Mark first connected with Enterprise Causeway Triex was little more than a concept. With the help of a dedicated business mentor, he refined his business plan, tested his ideas and mapped out a clear pathway forward. What followed was the transformation of a startup dream into a company trusted by some of the world’s most innovative organisations, ensuring the power behind their critical assets.
“Before starting Triex I had no business experience, no funding or staff. Enterprise Causeway’s support gave me the fundamentals and confidence to build a business and dedicated team. Today, we operate across 10 countries, providing employment opportunities locally while competing on a European stage.”
The company has been recognised with prestigious awards, from UBS UK Fast Growth Index Green Company of the Year to Belfast Telegraph’s Young Business Person of the Year. Beyond business, Triex has donated over £30,000 to charitable causes, reflecting its commitment to creating a positive impact in the wider community.
At the heart of Triex is its people. Mark often credits his team as the true energy behind the company – experts committed to delivering safe, efficient solutions that enable real progress.
Looking ahead, Triex is determined to strengthen its position as the go-to partner for specialist infrastructure projects across Europe. For Mark, the advice is simple: “Start with a support organisation like Enterprise Causeway, know your purpose, and when the time feels right – go for it.”