Iain Lister

Iain Lister

Iain has had more than 25 years experience of service for rotating equipment in the Power Generation, Oil & Gas and Industrial Markets.

Working for over 17 years in various technical and managerial roles involved with electrical rotating machinery in the power generation, oil & gas and industrial sectors. Iain's role immediately prior to joining Greenray was the Director of Service for the Stafford Facility.  Iain joined Greenray in 2007 and led the Greenray Energy Businesses as Managing Director of the Energy Division until 2012, when Iain acquired the business and became Chief Executive.

Recent success for Iain includes winning the EY Entrepreneur Of The Year 2015 International category in the Midlands region. 

Integrated Turbine Systems specialises in providing engineering solutions, maintenance services and new equipment for a wide variety of gas turbine, steam turbine and gas compressor packages.

We work closely with our customers to identify maintenance requirements, provide whole or part system refurbishments and replacements, and deliver a complete turnkey integrated systems approach to life extension.

Ultimately we aim to assist our customers in gaining the maximum potential from their assets in an efficient and cost effective way.

We provide turbine package operators with a cost effective alternative to traditional service providers without compromising on quality, reliability and safety.

Gas Turbine, Steam Turbine and Compression Specialists

Providing complete maintenance, upgrade solutions and new equipment for gas and steam turbine packages. Integrated Turbine Systems is part of the Greenray Group of Companies, which has been established for over 30 years, offering niche services to renew older, more mature equipment. 

Independent and not directly linked to an OEM, our team bring you expertise to extend and bring life to your gas turbine, steam turbine and compressor equipment.

Our comprehensive range of services include:

  • Proactive project management
  • On site field service support
  • Maintenance contracts 
  • Spare parts supply, including strategic spares planning
  • Complete overhauls in our specialised workshop facilities
  • Component repairs, servicing and replacement 
  • New equipment 
  • Complete plant rehabilitations 
  • Life extension and upgrade solutions 

We provide a customer focused service and a dedicated main point of contact who will assist you to access our extensive knowledge, find the right solutions for you and solve problems efficiently and cost effectively.

Our engineering expertise extends to new equipment installation, maintenance on older units and the ability to upgrade and extend the useful life of your existing assets. We provide a comprehensive range of tailored services and equipment, currently located in over 30 countries worldwide.


Established in 1981, the Greenray Group of companies has been offering turbine package upgrades and maintenance to the Oil & Gas and Power Generation sectors for more than 30 years.

For more information about ITS and our comprehensive range of services please contact us on +44 (0)1522 503300 or sales@turbinesystems.co.uk