In May 1998, President
Kim Dae-jung nominated Jang as the president of KEPCO, a move which provoked some controversy. of the opposition
Grand National Party expressed opposition to Jang's nomination, saying it was an example of Kim showing excessive favouritism towards his native
Honam region; he stated that among the 35 applicants for the job there had been many people with better qualifications. There were also questions over the legal validity of Jang's nomination. According to
Ministry of Commerce, Industry and Energy regulations, the president of a government-owned company is required to be a South Korean citizen. Jang had earlier acquired U.S. citizenship by naturalisation, thus automatically losing
South Korean citizenship. He
gave up U.S. citizenship in order to have his South Korean citizenship restored on 5 May 1998, but for a period of about two weeks after the submission of application papers on 25 April he was still legally a foreigner. A notice confirming his loss of U.S. citizenship appeared in the
Federal Register as required by the
Health Insurance Portability and Accountability Act in October 1998. Yang lasted slightly less than a year in the position: on 21 April 1999, KEPCO Vice-President Yun Haeng-sun reported to the Ministry of Commerce, Energy, and Energy that Jang would formally submit his resignation in a few days. Yun stated that Jang felt he lacked sufficient organisational management skills to continue in his duties. There were mixed assessments of Jang's impact at KEPCO. A November 1999 report by government auditors gave him credit for management reforms which led to some improvement in operational efficiency. However, he was also later criticised for heavy use of his corporate
expense account, as his own expenditures averaged 8.58 million per month, while KEPCO as a whole had the highest expenditures on expense account reimbursements out of all state-owned companies in 1999. One plan Jang worked on while at KEPCO involved upgrading electricity production and transmission facilities in order to export power to North Korea, as part of Kim Dae-jung's
Sunshine Policy of increasing the level of inter-Korean cooperation, but in the end the plan was never implemented. In a 2005 interview, Jang stated that it had been abandoned due to technical problems. ==Later career==