Think. Manage. Integrate.

The experience to exceed expectations

McMahon is a name that has been involved in the successful delivery of significant power generation and industrial electrical projects in New Zealand for over 30 years. The company name has evolved from McMahon and McDowell, McMahon and Associates, McMahon Engineering Consulting Ltd and now McMahon Ltd.

McMahon Ltd has two working Directors based with fellow Engineers in offices in Auckland, Tauranga, Napier and New Plymouth. Engineers are supported by in house CAD services, specialist software packages, and access to third party specialists as required.


  • Bachelor of Engineering (Electrical) University of Auckland 1984
  • New Zealand Certificate of Engineering (Electrical) 1982
  • Chartered Member of Engineering New Zealand CMEngNZ


  • New Zealand Certificate of Engineering (Electrical) 1990
  • Advanced Trade Certificate A, B & C 1988
  • Registered Electrical Inspector

General Manager

  • Bachelor of Engineering (Electrical) Auckland University of Technology 2013
  • Member of Engineering New Zealand MEngNZ

Engineering Manager

  • New Zealand Certificate of Engineering (Electrical) 1993
  • Bachelor of Business 2018

About us

We are a practical ‘hands on’ oriented group of engineers and will take direct responsibility and involvement in all aspects of the site works, as and when appropriate. Detailed electrical commissioning is usually led by McMahon.

We can supply the personnel that are required for installation supervision (Resident Engineer) and for all plant commissioning from high voltage switchgear, transformers, motor control centers to programmable logic controllers and instrumentation.