About Gas Turbine Controls

Global Solutions for Gas and Steam Turbine Operators

Since 2001, Gas Turbine Controls (GTC) has positioned itself as a premier technology supplier of replacement parts, repairs, training and field services for all versions of General Electric (GE) power plant controls systems, especially for the Speedtronic series. Areas of expertise include current, prior and discontinued versions of turbine control, excitation, LCI, generator protection and vibration monitoring systems.

During the years, GTC has expanded its product line to support all aspects of turbine users’ needs with proprietary developments in repair technology, upgrades, services and technical support, paired with competitive pricing and unparalleled customer service. Through a companywide dedication to quality in processes and products, GTC proudly maintains ISO 9001 certification.

From our corporate headquarters in New York and several domestic and international offices, we are able to support our expanding worldwide customer base. Our team of committed personnel has decades of field and repair technology experience that will exceed your expectations and support the life of your power plant assets.


With an extensive stock of GE circuit boards and other controls system components, GTC enables the user to keep and potentially improve the controls system’s expected reliability and availability. GTC also supports drive controls systems in the steel, aluminum and paper industries.

To ensure availability of critical components, GTC stocks thousands of genuine GE-manufactured circuit boards and other technology components, with emphasis on the Speedtronic Mark I, Mark II, Mark III, Mark IV, Mark V, Mark Ve, Mark V LM, Mark VI, and Mark VIe Turbine Controls Systems; the EX2000, EX2100, EX2100e, Alterrex, Generrex and earlier Excitation Systems, the Innovation Series and LS2100 LCI Systems as well as a wide array of other component parts.


GTC offers its own modern Mark V power supply, know as GTC-TCPS-1. For the Mark IV, originally designed with very limited connectivity, GTC offers upgrades of the operator’s interface (CRT + PIMB) with state-of-the-art technology enabling data gathering and remote operability through the GTC-S (HMI server). Committed to supporting the customer’s operational and maintenance excellence, GTC developed comprehensive test and repair protocols. GTC’s proprietary processes feature a unique final functional test in an energized GE controls system panel to consistently deliver reliable, working components.

These technological advantages promoted GTC to a distinct leadership position in the industry, maintained through significant investment in continuous development and improvement.


As of November 2015, GTC’s global headquarters, main test and repair shop, warehouse and training center were relocated to a new, 17,000 ft² (5168 m²) modern industrial facility in the Mid-Westchester Executive Park located at 6 Skyline Drive in Hawthorne, New York, USA.

GTC currently has more than 25 employees across a broad range of specialties and locations, as well as dedicated sales agents strategically located around the globe.

Find out how we can help you extend the life of your controls systems.

Supportscreen tag

Your safety, as well as the health and welfare of our employees, associates, clients and partners around the world is our priority.

We urge everyone to follow Government Guidelines and maintain strict social distancing.