9F-7 Gas Turbine

GE’s fleet of F-class gas turbines—the largest in the world—has a proven record of performance with more than 45 million operating hours. The 9F-7 gas turbine for the FlexEfficiency* 50 Combined Cycle Power Plant offers power generation that excels in performance, efficiency, reduced emissions, and operational flexibility compared to prior GE technologies.

Flexible, Efficient Power Generation

The 9F-7 gas turbine is highly efficient, air-cooled, and designed for utility-scale power generation. The improved efficiency and higher output results in less specific fuel consumption and emissions compared to prior technologies on a MW per hour basis. In addition, the ability to start-up quickly, change load rapidly and run at low loads allows customers to quickly respond to varying electricity industry conditions.

9F-7 Gas Turbine Highlights

>40 Percent Simple Cycle Efficiency

  • Air-cooled technology
  • Advanced 3D aerodynamic compressor with 14 stages

Full-Load Validation Prior to First Fire

  • GE’s Greenville, South Carolina validation facility conducts the most thorough full-scale gas turbine validation in the world

Advanced Technology

  • Proven materials ensure reliable and efficient operation
  • Improved rotor cooling and sealing using near flow path seals and cover plates — over 50% more rotor life versus the industry for cyclic missions

Field-replaceable Blades

  • Allows on-site replacement of compressor and turbine blades

Extended Turndown of 30% Gas Turbine Load While Maintaining Emissions Guarantees

  • Combustion system is an evolution of the current Dry Low NOx (DLN) 2.6+ pre-mix system
  • Turndown of the combined cycle plant from baseload to 40%

GE’s 9F-7 gas turbine in the FlexEfficiency 50 Plant operating at ISO baseload conditions for 4,500 hours/year is architected to achieve a 1.0 point increase of combined cycle efficiency, consuming less fuel per MW of power generated.

A typical customer operating GE’s FlexEfficiency 50 Plant with a 9F-7 gas turbine† for an equivalent net plant output of 510 MW could achieve an annual fuel savings of 6.4 million cubic meters of natural gas, equivalent to the annual natural gas consumption of approximately 4,720 EU households.

A typical customer operating under these conditions for an equivalent net plant output of 510 MW could avoid the emissions of more than 10 metric tons of NOx and 12,700 metric tons of CO2 per year, equivalent to the CO2 emissions of more than 6,480 cars on EU roads.