GE Power (NYSE: GE) announced today that the Chubu Electric Nishi-Nagoya power plant Block-1 in Japan – powered by GE’s 7HA gas turbine – has been recognized by Guinness World Records as the world’s most efficient combined-cycle gas-fired power plant, based on achieving 63.08 percent gross efficiency.

In addition to the HA gas turbine, the plant utilizes Toshiba Energy Systems & Solutions (ESS) Corporation’s steam turbine and generator technology, and optimal overall plant system design and construction were achieved by Toshiba ESS.
GE Bouchain plant
With this latest achievement, GE’s HA turbine has been recognized for powering the world’s most efficient power plants in both the 50hz and 60hz energy segments. In June of 2016, GE Power and EDF were acknowledged by Guinness World Records for delivering the world’s most efficient combined-cycle plant in a 50hz segment, powered by the 9HA turbine. 

The facility, in Bouchain, France, achieved an efficiency rate of 62.22 percent net efficiency and was also the world’s first combined-cycle plant equipped with GE’s HA turbine.

“We’re very proud to make history once again and to partner with Chubu and Toshiba to bring GE’s industry-leading HA turbine to Japan,” said Russell Stokes, President and Chief Executive Officer of GE Power. “Our HA technology enables the power plant of the future, delivering unprecedented levels of efficiency and reliability that can help countries everywhere meet today’s power demands and reach more aggressive emissions goals.”

GE supplied three 7HA.01 gas turbines to the Nishi-Nagoya Block-1 power plant, which provides more than 1,188 MW of power to the grid, the equivalent power needed to supply approximately 2.7 million average homes in Japan.  GE’s HA gas turbines are the fastest growing fleet of gas turbines in the world, and have achieved more than 88,000 operating hours of proven experience globally.

Low-cost natural gas-fired combined-cycle power plants and renewables are becoming more important in Japan as demand growth slows and utilities face more competition due to deregulation.

The 7HA’s fuel flexibility accommodates a wide range of gas and liquid fuels, including high ethane (shale) gas and LNG. Additionally, the 7HA can ramp up to full load in less than 30 minutes allowing for greater grid stability with renewable and alternative energy sources. The efficiency gains should help Chubu Electric reduce fuel costs and CO2 emissions.

GE supplied three more 7HA.01 gas turbines to Block-2 of the Nishi Nagoya facility, which is expected to achieve commercial operation at the end of March 2018.