Tokyo Gas-affiliated power plants are operated by Tokyo Gas Baypower Co., Ltd. (100,000 kWh, wholly owned by Tokyo Gas, 50% maximum efficiency on a lower heating value, or LHV, basis at the generating end), Tokyo Gas Yokosuka Power Co., Ltd. (240,000 kW, 75% owned by Tokyo Gas, 51% maximum efficiency), Kawasaki Natural Gas Power Generation Co., Ltd. (840,000 kW, 49% owned by Tokyo Gas, 58% maximum efficiency), and Ohgishima Power Co., Ltd. (approximately 1.2 MkW, 75% owned by Tokyo Gas, 58% maximum efficiency).
In addition, we decided to receive the entire output (approximately 1.24 MkW) of the Moka Power Station, which Kobelco Power Moka Inc. (a wholly owned subsidiary of Kobe Steel, Ltd.) is building in Moka city, Tochigi Prefecture. (The plant’s first unit will be completed in the second half of 2019, and its second in the first half of 2020.)
These plants are all highly energy-efficient natural gas-fueled power plants that generate electricity by using cutting-edge gas turbine combined cycle technology.
Using the electricity generated by these newly built highly efficient power plants in place of electricity produced by the less efficient existing thermal power plants will help reduce our CO2 emissions by the difference between the existing and new plants in CO2 emissions per unit of generated electricity.
Ohgishima Power Station
Gas Turbine Combined Cycle Technology
Combined cycle power plants that use LNG (liquefied natural gas) as fuel achieve higher power generation efficiency as they convert water to steam with the heat from gas turbines and collect the steam to run steam turbines to generate power.
Combined Cycle Power Generation
The Group promotes the procurement of electricity from renewable energy sources with the aim of helping to create a low-carbon society.
Electricity generation costs have recently dropped at wind power plants mainly due to their large-scale operations, and expectations are growing for them to emerge as major producers of renewable energy. We have engaged in wind power generation since 2005 at a plant with an output of 1,990 kW in our Sodegaura LNG Terminal. The Sodegaura plant called for the revocation of its certification under the Act on Special Measures Concerning New Energy Use by Operators of Electric Utilities in March 2013 and obtained certification under the Act on Special Measures Concerning Procurement of Electricity from Renewable Energy Sources by Electricity Utilities. In addition, we sell generated electricity to ENNET Corporation, an electricity retailer.