Merz & McLellan
|Industry||Electrical engineering consultants|
|Headquarters||Newcastle upon Tyne, England|
|Malcolm Kennedy (Chairman)|
The firm was founded by Charles Merz and William McLellan in Newcastle upon Tyne in 1902 when McLellan joined Merz's existing firm established in 1899. The partnership was instrumental in designing the United Kingdom's first three-phase electrical supply network, on Tyneside, and for the next century continued to advise other Commonwealth countries on setting up their own networks.
- 1901: Neptune Bank Power Station
- 1904: Carville Power Station, Wallsend, UK
- 1908 & 1912: Electrification of Melbourne suburban railways in Victoria, Australia.
- 1911: Electrification of North Eastern Railway (UK)
- 1914-18: Mobile power stations for the battlefield
- 1921: North Tees Power Station
- 1925: Report on electrification of the New Zealand suburban systems in Auckland, Wellington, Christchurch and Dunedin. (including the Lyttelton railway line between Lyttelton and Christchurch 
- 1933-51: Dunston B power station, Dunston, Newcastle-Upon-Tyne, UK
- 1940s: Orlando Power Station, Johannesburg, South Africa
- 1953: Blyth A Power Station, Cambois, Northumberland, UK
- 1960s: Bell Bay Power Station, Tasmania, Australia
- 1962: Blyth B Power Station
- 1969 Longannet Power Station
- 1980-1993: Kariba South dam hydroelectric upgrade
- 1989: Subiya oil-fired power station, Kuwait
Merz & McLellan firms still independent
- An exciting time for electrical engineers The Independent, 22 January 1998
- Charles Merz - Lessons from Boston Institute of Engineering & Technology
- Speech by Dr Malcolm Kennedy The Royal Society of Edinburgh, 2004
- Mott MacDonald acquires African power consultant Merz and McLellan
- Merz & McLellan South Africa
- Churchman, Geoffrey B. (1995). Railway Electrification in Australia and New Zealand. Sydney & Wellington: IPL Books. pp. 45,46. ISBN 0-908876-79-3.
- Tyne and Wear Archives
- Churchman, Geoffrey B. (1995). Railway Electrification in Australia and New Zealand. Sydney & Wellington: IPL Books. pp. 16,17. ISBN 0-908876-79-3.
- Lyttelton Railway Tunnel
- Sinclair Knight Merz