Repair & Overhaul

Repair and overhaul services for gas generators

You can trust our expertise to enhance your gas generator performance and lower your lifecycle costs.

We offer a full in-house scope of gas generator repair and overhaul service, covering scheduled and unscheduled maintenance, engine upgrades and repairs, exchange engines, parts provision, performance testing, and logistics management. We are OEM-approved, bringing you unrestricted access to the latest OEM repair and overhaul procedures.


Our repair and overhaul capability extends across SGT-A35, SGT-A20, SGT-A05 and Olympus gas generators; marine Spey, Tyne, Olympus and WR21 gas turbines; and power turbines. We have successfully overhauled close to 4000 engines used in the global power generation, oil & gas and marine propulsion industries.

Combined with our world-leading advanced technology component repairs and global, 24/7 field service support, it’s easy to see why operators choose us as their preferred maintenance partner.

Close to
engines overhauled

For the global power generation,
oil & gas
and marine propulsion industries

“The support provided by RWG was exemplary. Materials, labour, planning and technical advice were provided with exceptionally short notice to an exceptionally high standard.”International Oil and Gas Company

Service designed around you

For nearly three decades, we have invested continuously and significantly in our world-class service facilities. We have a combined 220,000 sq ft of dedicated repair, overhaul and testing capacity across multiple locations in the UK, US and Asia Pacific.

Our bespoke maintenance solutions are tailored to your individual equipment and operations. Our exceptional product knowledge and robust systems and processes help improve the efficiency and reliability of your engines.

We are team of 500 highly skilled and experienced industry professionals, ready to support you wherever and whenever you need us. From basic inspections to full equipment overhaul, we will work with you to define a work scope that delivers quality and integrity, on time and within budget.

You’ll have a dedicated RWG project engineer, who knows your equipment inside out, and we’ll provide updates as often as you need them as your engine progresses through our facilities.

Get in touch with us to discuss your gas generator repair and overhaul requirements.

Case study

Maintenance solution for marine propulsion.

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Enquire about this service
Major Maintenance
Major maintenance Availability and reliability for critical equipment.
Read more about maintenence
Upgrades A range of engine upgrades for your gas turbine equipment.
Read more about upgrades