About 50% Lower

High efficiency energy through combined cycle power generation

Gas turbine combined cycle (GTCC) power plants use natural gas to deliver the cleanest and highest efficiency power generation.

Plants employing state-of-the-art gas turbines of Mitsubishi Power have a 20% higher power generation efficiency than conventional coal-fired thermal power generation systems and the world’s highest level of efficiency of more than 64%. That enables CO2 emissions an approximate 50% reduction.

What is GTCC?

In the power generation method characterized by the standalone operation of a gas turbine, known as the simple or open cycle, releases exhaust gas at temperatures of around 600℃ into the atmosphere.

Combined cycle power generation improves the general thermal efficiency of the plant by recovering this high temperature exhaust gas. Many combined cycle power generation plants adopt a waste heat recovery cycle in which exhaust gas from the gas turbine is led to the waste heat recovery boiler to generate steam using recovered heat to drive the steam turbine.

Advantages and Features that Make the GTCC the Mainstream for New Thermal Power Generation Facilities

High level of thermal efficiency

In comparison with thermal efficiency of about 40% in steam power generation, combined cycle power generation features a thermal efficiency of at least 60% (with both figures on the lower heating value basis).

Environmentally-friendly

Carbon dioxide (CO2) is released in smaller quantities into the atmosphere.

Nitrogen oxides (NOx) and sulfur oxides (SOx) are released in smaller quantities into the atmosphere.

High temperature wastewater is discharged in smaller quantities into the sea.