H System™ Turbine Combined Cycle System

GE’s H System™ turbine is one of the most advanced gas turbines in the world, the first capable of delivering 60 percent efficiency and powerful enough to provide electricity to 273,000 American homes.

Environmental Benefit

A GE 7H gas turbine combined cycle system has the capacity to generate 3.2 million megawatt-hours of electricity per year, which is equivalent to the annual electricity usage of 273,000 U.S. households – approximately the number of households in Austin, TX. Producing 3.2 million megawatt-hours of electricity with a GE 7H gas turbine combined cycle system rather than in a typical U.S. coal-fired plant could avoid the emission of 1.9 million metric tons of CO2 per year – equivalent to the annual emissions from more than 370,000 passenger cars on U.S. roads.

Operating Benefit

Greater efficiency means the H System™ uses less fuel and produces fewer emissions per megawatt of electricity generated than a typical gas turbine combined cycle system.

The environmental challenge

The H System™ uses an innovative closed-loop steam cooling system. This system allows the turbine to fire at a higher temperature capable of 60-percent fuel efficiency capability and helps deliver greater efficiency, reduced emissions and less fuel consumption per megawatt generated.

GE’s innovative solution

Producing 3.2 million megawatt-hours of electricity with a GE 7H gas turbine combined cycle system rather than a typical gas turbine combined cycle system could avoid the emission of 45,000 metric tons of CO2 per year - equivalent to the annual emissions from more than 8,700 passenger cars on U.S. roads.

Environmental impact

Producing 3.2 million megawatt-hours of electricity with a GE 7H gas turbine combined cycle system rather than a typical U.S. coal-fired plant could avoid the emission of 1,900,000 metric tons of CO2, equivalent to the CO2 absorbed annually by 530,000 acres of southeastern U.S. forest.

Producing 4.16 million megawatt-hours of electricity with a GE 9H gas turbine combined cycle system rather than in a typical gas turbine combined cycle system could avoid the emission of 540 metric tons of NOx. Producing 3.2 million megawatt-hours of electricity with a GE 7H gas turbine combined cycle system rather than a typical gas turbine combined cycle system could avoid the emission of 45,000 metric tons of CO2, equivalent to the CO2 absorbed annually by 12,000 acres of southeastern U.S. forest.

Cutting costs

GE’s H System is the first advanced combined cycle system capable of breaking the 60 percent efficiency barrier and delivers higher efficiency and output to reduce the cost of electricity of this gas-fired power generation system.