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The Irish Construction News Top 20 Mechanical and Electrical Contractors 2022 listing is a snapshot of the overall Irish M &E specialist services sector at the end of 2021.

No 1: Mercury 

Total Turnover: €1.48BN

ROI Turnover: €600M

International Turnover: €880M

Mercury is a European contractor that builds and manages complex engineering projects that reimagine how people work and live in the built environment. Mercury’s focus and determination enable it to deliver leading-edge construction solutions across a range of key sectors, including enterprise and hyperscale data centres, advanced technology, life sciences and the live environment.

Gyproc

No 2: Jones Engineering

Total Turnover: €930M

ROI Turnover: €558M

International Turnover: €372M

Jones Engineering employs over 4,000 people throughout Ireland, the UK, Europe and the Middle East. It has an annual training budget of over €2m and encourages all of its employees to attend internal and external training courses on a regular basis.

No 3: Kirby Group Engineering

Total Turnover: €402,699,261

ROI Turnover: €253,446,397

International Turnover: €149,252,864

Established in 1964, Kirby Group Engineering is a values-driven business that has taken pride in providing quality and value for its clients for over 55 years. It is a privately-owned provider of complete mechanical and electrical contracting services, as well as specialist high-voltage (HV) and medium-voltage (MV) design and construction services.

No 4: Dornan Engineering Ltd

Total Turnover: €370M

ROI Turnover: €105M

International Turnover: €265M

Expanding into new markets has allowed Dornan to diversify its business and grow its reputation as a European market leader in the M&E and HVAC installation industry. Taking advantage of the adjustments required to navigate the Covid pandemic, Dornan worked to build synergy with its clients, optimising its expertise and resources. It enhanced its technical and engineering capabilities to engage earlier in the project lifecycle, reducing cost and schedule while increasing flexibility and value.

No 5: STS Group

Total Turnover: €255M

ROI Turnover: €85M

International Turnover: €170M

Specialising in electrical, instrumentation and commissioning services, STS Group has been on an impressive growth trajectory of late. Having made substantial investments locally and internationally across its two main areas of focus – life sciences/pharma and data centres – the firm now has 1,600-plus personnel delivering some of the most challenging and prestigious projects with world-renowned brands.

No 6: Suir Engineering 

Total Turnover: €242M

ROI Turnover: €175M

International Turnover: €67M

Suir Engineering has over 38 years of mechanical, electrical and instrumentation (M, E&I) expertise, with offices in Waterford, Dublin, Sweden, Denmark and Germany and a direct workforce of more than 1,300 people.

No 7: Designer Group

Total Turnover: €202,300,00

ROI Turnover: €125,426,000

International Turnover: €76,874,000

Founded in 1992 on its electrical engineering excellence, Designer Group is now a leading innovative and sustainable provider of mechanical, electrical and instrumentation engineering solutions and celebrates its 30th anniversary in 2022.

No 8: King & Moffatt

Total Turnover: €129M

ROI Turnover: €36M

International Turnover: €93M

King & Moffatt Building Services is an award-winning mechanical and electrical contractor with over 400 directly-employed personnel. It has over 40 years’ experience in the building services industry and an annual group turnover of over €125m.

No 9: Radley Engineering

Total Turnover: €88,448,641

ROI Turnover: €87,012,069

International Turnover: €1,436,572

Radley Engineering Ltd is one of Europe’s leading specialists in the design, manufacture, fabrication and site installation of high-quality stainless steel, carbon steel and exotic materials.

No 10: BMD & Co Limited

Total Turnover: €67.2M

ROI Turnover: €67.2M

With 50 years as one of Ireland’s leading mechanical engineering companies, BMD & Company Limited (BMD) has a track record of delivering projects across a wide range of industries, including life sciences, semiconductors and oil and gas.

No 11: MSL Engineering Ltd

Total Turnover: €47,077,245

ROI Turnover: €46,077,245

International Turnover: €1,328,409

Founded in 1979, MSL Engineering Ltd is a mechanical engineering contractor dedicated to delivering a service that incorporates the highest standards of workmanship, safety, quality and reliability in interpreting and exceeding its clients’ expectations.

No 12: Lynskey Engineering

Total Turnover: €44,622,000

ROI Turnover: €21,141,000

International Turnover: €23,481,000

CJK Engineering

No 13: CJK Engineering

Total Turnover: €44,546,326

ROI Turnover: €44,546,326

CJK Engineering is an Irish-owned mechanical and electrical services contractor established in 1998. Based in Dublin, the company has steadily expanded its operations over the past 24 years and employs 320 people.

No 14: Leo Lynch Group

Total Turnover: €44.27M

ROI Turnover: €44.27M

Leo Lynch was established in 1956 and is one of Ireland’s leading mechanical and process-mechanical engineering contractors.

No 15: LMC Group

Total Turnover: €42M

ROI Turnover: €41,160,00

International Turnover: €840,000

Founded by joint managing directors Martin Lydon and Stephen McConnell in 2008, LMC Group comprises three distinct businesses – LMC MEP Ltd, LMC FM and LMC Modular.

Tritech

No 16: Tritech Engineering

Total Turnover: €36M

ROI Turnover: €36M

No 17: Weltec

Total Turnover: €26,700,00

ROI Turnover: €26,700,564

Rockwell

No 18: Rockwell Engineering

Total Turnover: €20M

ROI Turnover: €20M

Buttimer Engineering

No 19: Buttimer Engineering

Total Turnover: €19.6M

ROI Turnover: €11.17M

International Turnover: €8.43M

Rockwell Engineering

No 20: T Bourke Ltd

Total Turnover: €14.5M

ROI Turnover: €14.5M