SK Gas Ltd., South Korea’s leading liquefied petroleum gas (LPG) supplier seeking to transform into a clean energy company, has moved a step closer to commercial operations of the world’s first liquefied natural gas (LNG)/LPG combined cycle power plant later this year.
SK Gas announced on Tuesday that Ulsan GPS (UGPS), its subsidiary operating the world’s first LNG/LPG combined cycle power plant in Ulsan, succeeded early last month in the initial firing of two gas turbines, each with a capacity of 400 megawatts (MW) and has been distributing the LNG-fired electricity to power girds operated by Korea Electric Power Corp., Korea’s state-owned utility company.
Since then, UGPS has been test-operating its facilities with LNG supplied from the Korea Energy Terminal (KET), SK Gas’ first LNG terminal, without any issue, moving a step closer to completing the energy parent’s LNG value chain, a key to its transition into an eco-friendly energy company.
UGPS, located in the coastal city of Ulsan, about 310 kilometers southeast of Seoul, is the world’s first LNG/LPG combined cycle power plant, using both LNG and LPG as clean fuels.
SK Gas spent 1.4 trillion won ($1 billion) to build UGPS expected to generate 1.2 gigawatts (GW), equivalent to one nuclear power plant, which is estimated to power 2.8 million households annually.
Considering that the LNG terminal is located about 5 kilometers from the power plant, SK Gas will be able to maximize its power generation profit with low LNG delivery costs.
The LNG carrier Grace Cosmos unloads about 65,000 tons of LNG at the Korea Energy Terminal in the port of Ulsan (Courtesy of SK Gas) UGPS is designed to use the less-expensive LPG to fire the power plant when global LNG prices move upward.
SK Gas said it plans to test-fire gas and steam turbines at UGPS with LPG to commence commercial operations of the dual-fuel power plant in the second half of this year.
It aims to transform into an LNG company that imports, stores and supplies the clean gas from 2024 with an end goal to switch its business focus to hydrogen.
The company plans to produce liquefied hydrogen through the cold energy of LNG at low costs.
As part of the plan, it broke ground on UGPS in September 2022. It also built the KET jointly with Korea National Oil Corp.
Including the three tanks at SK’s hydrogen energy complex, dubbed Clean Energy Complex, near the KET, SK Gas will have a total of six LNG storage tanks with a total capacity of 7.2 million tons.
