GEC Turbine Generators Ltd was a subsidiary of GEC. Although GEC sold its turbo-generators business in 1966, in the following year the company acquired AEI, which brought turbo-generators back. In 1969 the company established GEC Power Engineering, which included English-Electric AEI Turbine Generators Ltd. The business became known as GEC Turbine Generators Ltd around 1972.

GEC Turbine Generators Ltd had its headquarters and steam turbine design centre at Rugby, whilst manufacturing for low pressure turbines was based at Trafford Park, and Stafford manufactured generators.

Faced with a slow domestic market in the 1970s GEC Turbine Generators increasingly turned its focus to overseas markets. It won significant contracts for work on power stations in Hong Kong and South Korea, amongst other countries, and by October 1976 could boast that 60-70 percent of its business was in exports. The company was given the Queen's Award for Export Achievement for its steam turbines and associated generators for fossil-fuel and nuclear power stations in 1982.

In 1998 GEC Turbine Generators was merged with Compagnie Générale d'Electricité (CEG) and became known as GEC Alsthom Turbine Generators Ltd.