By Joyce Lee
SEOUL, Sept 22 (Reuters) - South Korea's government is due to brief lawmakers on Tuesday on plans for a $350 billion US investment package, a key step as Seoul and Washington seek to finalise implementation of a trade deal that cut US tariffs on South Korean goods to 15%.
The Industry Ministry's briefing to the National Assembly's trade committee was postponed last week while negotiators sought to bridge differences between US and South Korean demands, officials and media reports said.
A parliamentary schedule showed lawmakers would be briefed at 9:30 a.m. (0030 GMT) on Tuesday.
Lawmakers have described the briefing as one of the final steps before the two allies can agree terms and make a formal announcement.
The investment commitment was made under a trade agreement struck last year under which Seoul pledged to invest in US manufacturing in exchange for lower tariffs on imports from South Korea.
Of the $350 billion package, $150 billion has been earmarked for shipbuilding. Details for the remaining $200 billion in strategic investments have yet to be finalised.
Projects under discussion include a $22.3 billion, 6.3-gigawatt gas-fired power plant in Encinal, Texas, intended to supply electricity to AI data centres and chip factories, according to South Korean media.
Seoul and Washington are also discussing construction of as many as eight large nuclear reactors in the United States, according to media reports.
South Korea has also explored buying a minority stake in the US nuclear firm Westinghouse, while the possibility of participating in a long-delayed Alaska liquefied natural gas project has been raised.
President Lee Jae Myung said on Friday that commercial viability had become a sticking point as negotiators moved from broad agreement to the details of individual projects.
Lee said Seoul had sought to ensure the agreement referred to "commercially reasonable" investments, amid questions over returns, profit-sharing and how losses from unprofitable projects would be handled.
Opposition lawmakers have demanded closer parliamentary scrutiny, warning that Seoul could be exposed to disproportionate financial risks in energy projects.
Kim Sung-won, chair of the trade committee, said on Monday concerns had grown over terms for nuclear and power generation investments.
Further delay in the implementation of the trade deal risks renewed friction with Washington. US President Donald Trump threatened South Korea with higher tariffs earlier this year over the pace of implementing the agreement.
Lee travelled to the United States on Monday to attend the UN General Assembly, where he is seeking meetings with Trump and other leaders.
(Reporting by Joyce LeeEditing by Ed Davies)
