The Tongyeong power project is a 1GW  gas-fired, combined-cycle power project being developed in the Gyeongsangnam-do province of South Korea.

Tongyeong Eco Power Corporation, a subsidiary of Hyundai Development Company (HDC), is building the gas-fired power station with an estimated investment of approximately £946m ($1.2bn).

The construction works on the project are anticipated to be started in 2021. Scheduled for commissioning in the first half of 2024, the Tongyeong combined-cycle power station is expected to supply enough electricity for approximately one million South Korean households.

Location and site details

The Tongyeong gas-fired power project is located in the Gwangdo-myeon, Tongyeong-si, in the Gyeongsangnam-do province of South Korea.

The project site occupies approximately 275,269m2 in the Anjeong Industrial Park, near the Seongdong Shipbuilding site and Korea Gas Corporation’s Tongyeong base.

Tongyeong power plant make-up

The Tongyeong combined-cycle power station will be equipped with two 7HA.02 gas turbines, one STF-D600 steam turbine, two heat recovery steam generators (HRSG), and three H65 generators from GE for a total net output of 1,012MW.

The gas turbine will be fitted with an air-cooled generator and will be capable of near-zero carbon operations by running on a blend of hydrogen and natural gas if required in the future.

The heat recovery steam generator (HRSG) module will be connected to a 65m-high exhaust stack, while the other components of the facility will include a boiler feed water pump, auxiliary boiler, cooling water intake pump station and tower, a wastewater treatment plant, raw water, and demineralised water storage tanks, and a 154kV gas-insulated substation.

Infrastructure facilities

The Tongyeong power project also involves the construction of one 200,000 kilolitres (kl) of storage tank for liquefied natural gas (LNG) along with associated facilities, a service gas storage building for N2, H2, and CO2, a chlorination building, along with sampling rack room, warehouse, workshop, and administrative building.

Contractors involved

Hanwha Engineering and Construction Company was awarded an engineering, procurement, and construction (EPC) contract worth approximately £262m ($338m) for the development of Tongyeong power project in November 2020. Hanwha Energy Company will also be responsible for the supply of natural gas to the power plant.

General Electric (GE) was contracted for the supply of turbines and generators for the Tongyeong power project in January 2021. It also entered into an agreement to provide maintenance services for the turbines and generators for a period of 18 years.

The heat recovery steam generator pressure part module for the Tongyeong project will be built in GE’s factory in Changwon, Gyeongsangnam-do, South Korea.

Tongyeong combined-cycle power project background

Hyundai Development Company established Tongyeong Eco Power Company and acquired a license for the development of Tongyeong combined-cycle gas turbine (CCGT) power project in 2013.

The project was included in South Korea’s sixth Basic Plan for electricity supply and demand, and the project site was purchased from the Seongdong Shipbuilding & Marine Engineering Company in September 2019.

Hyundai Development Company (HDC) and Hanwha Energy Company signed a joint promotion contract for the project in November 2019.

While a memorandum of understanding (MoU) for the gas supply was signed with Korea Gas Corporation in 2015, an LNG terminal use agreement was inked for the project in November 2020. The agreement facilitates the direct unloading of imported LNG at the existing facilities of Korea Gas Corporation.