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Industrial installation

When industrial plants face problems such as high harmonic distortion, flicker, or supply unreliability, expert troubleshooting is essential to provide the required plant reliability as soon as possible.

Mott MacDonald is often called in to carry out troubleshooting on industrial plants with specific problems, such as high harmonic distortion, flicker or supply unreliability.

Our experience on a vast range of plant types and our measurement capability enables us to deliver solutions and remedial measures effectively and efficiently.

Mott MacDonald has strong capability and a long track record in major industrial power projects, including management of multidisciplinary projects, troubleshooting, and electrical design services integrated with the client’s process design team.


We have a leading track record in petrochemical plants where the integration of electrical systems into process engineering is crucial to reliable, continuous production. Key drivers for such plants are different from those of utility networks. The cost versus reliability financial balance is often very different, leading to alternative engineering solutions.

Constraints are often more stringent in terms of available space and the need to integrate with other services, such as steam, fuel, water, air, and gases. We provide solutions to meet all these requirements.

Mott MacDonald has worked extensively on the following:

  • Offshore oil and gas production facilities, fixed and floating
  • Onshore oil and gas production facilities, grid-connected and islanded
  • LNG liquefaction plants, connected and islanded
  • Refineries, connected and islanded
  • Metallurgical works


  • Design checking
  • Detailed construction planning, including outage planning
  • Detailed design and engineering of power systems, including civil works
  • Earthing calculations
  • Feasibility and technical studies
  • Outline system design
  • Overall project management leading up to commissioning and handover
  • Plant selection
  • Site supervision of installation, including site safety
  • Studies and recommendations for power factor control

Customer benefits

Mott MacDonald can provide a total plant design team or electrical service that will work closely with your plant team while providing comprehensive service in electrical systems engineering up to the highest voltages.

This is becoming crucial as more industry plant operators contemplate the need to move to high-voltage operations to cater for the large amounts of power required by modern industry processes.

Selected project examples

Aluminum smelter plant, Middle East

We've carried out a complete study of a high-voltage distribution system for one of the leading aluminum smelter plants in the Middle East. This included reconfiguration of the integrated HV distribution system, rectifiers supplying DC current to the smelter, harmonic measurement, analysis, and design of filters.

Steel and LNG plants

We've provided similar studies and full implementation services for smelter plants and the steel and LNG industries worldwide over the last few decades. We have the capability to undertake complete consulting services for the implementation of all electrical services from captive power plants and distribution systems to special services such as the design of rectifier transformers and harmonic filters.

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