The Irish Construction News Top 15 Mechanical and Electrical Contractors 2020 Listing is a snapshot of the overall Irish M &E specialist services sector at the end of 2019.

No.1: Mercury 

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 and life sciences, fire protection, technical support services (TSS), data centre facility management, healthcare and building services.

Total Turnover: €1.04BN

ROI Turnover: €375m

International Turnover: €665m

No.2: Jones Engineering

Jones Engineering Group currently employs over 4,000 people with a turnover of circa €750m per annum and a training budget of in excess of €2m. Operating throughout Ireland, the UK, Europe and the Middle East, it delivers projects in the data centre, medical, life sciences, building services, industrial, semi-conductor, and power and energy sectors.

Total Turnover: €750M

ROI Turnover: €375M

Internation Turnover: €375M

No 3: Winthrop

Winthrop is a dedicated data centre construction company providing turnkey solutions to meet clients’ needs. Founded in 1995 and headquartered in Dublin, Winthrop has a portfolio of projects that stretches across Europe.

Total Turnover: €560,006,114

ROI Turnover: €91,820,525

International Turnover: €468,185,589

No 4: Dornan Engineering Ltd

2020 was a bumper year for Dornan, having the largest turnover in the company’s history. According to Micheál O’Connor, Managing Director, Dornan Engineering: “On the back of an exceptional year in 2020, 2021 has shown some pause in certain sectors following the impacts of Covid-19 on the broader European and global economies.

Total Turnover: €488M

ROI Turnover: €115M

International Turnover: €373M

No 5: Kirby Group

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. A family-founded, privately-owned company, Kirby provides complete mechanical and electrical contracting services. The company also provides specialist high-voltage (HV) and medium-voltage (MV) design and construction services.

Total Turnover: €292,746,938

ROI Turnover: €157,728,319

International Turnover: €135,018,619

Laois Hire

No 6: Designer Group

Total Turnover: €203,426,638

ROI Turnover: €114,568,009

International Turnover: €88,858,629

No 7: Suir Engineering 

Total Turnover: €190M

ROI Turnover: €157.5M

International Turnover: €32.5M

No 8: STS Group

Total Turnover: €182M

ROI Turnover: €73M

International Turnover: €109M

No.9: King & Moffatt

Total Turnover: €114.8M

ROI Turnover: €37.2M

International Turnover: €77.6M

No 10: Radley Engineering

Total Turnover: €58,830,153

ROI Turnover: €57,746,117

International Turnover: €1,084,036

No 11: MSL Engineering Ltd

Total Turnover: €51,340,083

ROI Turnover: €48,688,031

International Turnover: €2,652,052

No 12: Leo Lynch Group

Total Turnover: €50M

ROI Turnover: €50M

No 13: Lynskey Engineering

Total Turnover: €45M

ROI Turnover: €20.7M

International Turnover: €24.3M

No 14: BDM & Co Limited

Total Turnover: €43,284,071

ROI Turnover: €43,284,071

No 15: LMC Group

Total Turnover: €42,670,000

ROI Turnover: €42,670,000

No 16: Weltec Engineering

Total Turnover: €37,150,000

ROI Turnover: €37,150,000

No 17: CJK Engineering

Total Turnover: €29,058,774

ROI Turnover: €29,058,774

Riverside

No 18: Riverside Engineering Ltd

Total Turnover: €21M

ROI Turnover: €21M

Tritech

No 19: Tritech Engineering Ltd

Total Turnover: €20M

ROI Turnover: €20M

Rockwell

No 20: Rockwell Engineering

Total Turnover: €19.5M

ROI Turnover: €19.5M