TES has been acquired by Legrand, in a deal that gives the Northern Irish engineering firm access to one of the biggest names in electrical and digital building infrastructure.

The acquisition follows a period of rapid growth for TES, which has built its presence in the European data centre market as well as the UK and Irish utility sectors. The company said it had grown revenue to £72 million and expanded its workforce to around 300 employees.

It’s estimated that around 50% of TES’ revenue currently comes from the data centre sector, with the firm hoping to grow even further to capitalise on the rapid growth that is occurring in the industry in response to the rise of AI. 

Headquartered in Cookstown, County Tyrone, TES has recently expanded its manufacturing footprint with the opening of a 300,000sqft campus in County Derry. That additional capacity should be able to pump out more low-voltage power distribution equipment, ensuring that the company can keep up with demand. 

Earlier this year, Legrand pointed to the data centre market as a key driver of growth. While the firm has long been established in both the residential and commercial power market, it has been eager to compete with players such as Schneider Electric and ABB in the data centre sector. 

So far, its strategy has been paying off. Legrand reported that data centres accounted for 26% of its 2025 revenues, with it noting that the sector has the potential of accounting for 40% of its revenue in the future. This acquisition of TES should help it move towards that goal. 

As part of the deal, TES said it would continue to operate from its existing facilities in Cookstown and Derry following the acquisition, maintaining its focus on local job creation and its specialist divisions serving both the data centre and water utility markets.

Brian Taylor, CEO of TES, noted, “Joining Legrand is a landmark moment for TES. Over the past number of years, we have scaled our operations at an incredible pace, and this acquisition is a testament to the hard work and expertise of our entire team. Legrand’s global reach and market-leading position in the electrical sector provide the perfect platform for TES to further expand our international presence. We are excited to bring our bespoke engineering solutions to a wider audience while remaining deeply committed to our roots in Northern Ireland.”

Noel McCracken, Managing Director of TES, added, “Our mission has always been to provide innovative, high-quality engineering for critical infrastructure. With the support of Legrand, we can accelerate our investment in state-of-the-art manufacturing and continue to lead the way in both the water and power critical infrastructure markets.”