Mactech Energy Group is proud to announce its acquisition by Assystem, marking a pivotal step in our ongoing commitment to supporting the UK’s nuclear energy transition. This strategic partnership underscores Assystem’s dedication to advancing nuclear projects in the UK and achieving the nation’s ambitious low-carbon energy objectives.
With over 37 years of expertise in site-based construction for the nuclear industry, Mactech will continue to operate as an independent entity under Assystem’s ownership. Together, we aim to enhance our collective impact by delivering innovative workforce solutions and strengthening our capabilities to support critical nuclear projects, including Hinkley Point C, the Magnox fleet, and Small Modular Reactor (SMR) developments.
Andrew McFarlane, Managing Director of Mactech, shared:
“By joining forces with Assystem, Mactech is better positioned than ever to create meaningful career opportunities and deliver high-value services to our customers. This partnership will help accelerate progress toward a cleaner, more sustainable energy future for the UK.”
Christian Jeanneau, Executive Vice President at Assystem, added:
“We are delighted to welcome Mactech to the Assystem Group. Together, we will drive the UK’s energy transition, combining our strengths to support nuclear and defence customers through engineering and construction contracts.
About Mactech Energy Group
Mactech specialises in workforce solutions, project support, and resource planning for the UK’s nuclear industry and other highly regulated sectors. Founded in 1986, Mactech has been a trusted partner in advancing the energy transition, with a proven track record of delivering results for civil nuclear new build programs and beyond.


