Merger implications for Korean utility Climate Transition Bonds

8 minute read

Download full paper (0.5mb)

On 4 September 2026, the Korea government announced plans to combine five thermal power generation companies into Korea Power Generation, a wholly owned KORELE subsidiary with approximately 53GW of generation capacity.

Three of the companies, KOEWPW, KOMIPW and KOSOPW, issued USD Climate Transition Bonds (CTBs) in 2026. This paper assesses what the merger means for the three CTBs, including bond and reporting continuity, their contribution to the combined entity’s coal portfolio and alignment with a 1.5°C pathway.

The three CTBs raised USD1.1bn in aggregate and attracted order books several times their respective issue sizes. Proposed special legislation envisages continuity of existing debt, and no merger-triggered change-of-control put or automatic coupon adjustment was identified. However, investors need clarity on responsibility for proceeds allocation, impact reporting and external review under each existing framework.

Korea Power Generation would inherit most of the country’s coal fleet: approximately 32.1GW of Korea’s roughly 40GW of coal capacity. The CTBs’ selected coal-replacement projects scheduled through 2035 address approximately 6.4GW, around 20% of the estimated combined entity’s coal portfolio.

National coal retirement milestones extend beyond the IEA’s 2021 benchmark. Clearer coal-retirement dates, operating horizons for replacement gas assets and pathways away from unabated LNG would help investors assess whether future financing supports a portfolio transition consistent with a 1.5°C-aligned benchmark.