#South Korea #Pusan National University #Busan #Korean Emissions Trading #Power Sector Reforms

Introduction

As nations endeavor to meet ambitious climate goals, South Korea is making significant strides in reforming its emissions trading system, which is integral to its climate strategy. The Korean Emissions Trading Scheme (K-ETS), implemented in 2015, allows companies to trade emission permits, aiming to reduce greenhouse gas emissions, particularly in the energy sector which is expected to contribute significantly to national emissions reductions. However, ongoing structural challenges have prompted the government to propose reforms for the K-ETS fourth phase (2026-2030).

Current Landscape of K-ETS

The K-ETS model has drawn inspiration from the well-established European Union Emissions Trading System (EU-ETS); however, market conditions between Korea and the EU differ considerably. The ongoing reforms seek to enhance the effectiveness of the K-ETS, but their potential impact on the electricity sector remains unclear. Research led by Assistant Professor Dowon Kim from Pusan National University focuses on this very question, analyzing how the proposed reforms could influence the electricity market and the various power generation companies involved.

Research Methodology

Professor Kim and his research team developed a sophisticated computational model to simulate different scenarios involving key policy variables:
1. Benchmarking Mechanisms: Examining a fuel-specific benchmark versus a uniform benchmark, which would provide a single standard for all power plants, regardless of their energy source.
2. Auctioning Ratios: Addressing the current versus proposed increases in the share of allowances that companies must procure through auctions.
3. Carbon Pricing: Evaluating the effects of increasing carbon pricing, which dictates the cost associated with producing emissions.

The results indicated that simply adjusting the benchmarking mechanisms would not suffice to catalyze significant decarbonization. Instead, it must accompany expanded auctioning, elevated carbon pricing, and supportive policies to foster more profound economic and environmental impacts.

Findings of the Study

Through their analysis, the researchers discovered notable trends in how different types of power generation companies would be affected by the proposed reforms:

• - Fossil Fuel-based Companies: Shifting from a fuel-specific to a uniform benchmark would lead to decreased free emission allowances, which drastically impacts fossil fuel-dependent companies, particularly coal-based entities that face significant profit declines.
• - Natural Gas Companies: More insulated from these changes, natural gas firms exhibited less volatility in profit margins. Increasing the auctioning ratio raised production costs, nudging firms toward investing in lower-emission alternatives like gas.
• - Overall Impact of Carbon Pricing: This policy change was found to have the most substantial effect, leading to increased costs for coal electricity generation relative to gas, prompting shifts in fuel usage.

Recommendations

Professor Kim's team posits that to realize the ambitious decarbonization goals outlined, these reforms must be tethered to complementary measures including targeted investments and transitional support. This multifaceted approach is critical, especially in a centralized electricity market like Korea’s, where companies struggle to offset rising costs by raising consumer prices. Fostering integration between policy reforms ensures they enhance the stability of the power sector while driving the transition to a cleaner energy landscape.

Conclusion

The study underlines the importance of an integrated policy framework that not only aligns with national climate objectives but also mitigates potential burdens on power generation enterprises. As South Korea progresses toward its climate commitments, these findings illuminate the necessary steps to refine its emissions trading system for a sustainable future.

Reference

• - Title of original paper: Impact of changes of allocation and price in emission trading scheme on the electricity market: Korean case study
• - Journal: Energy Policy
• - DOI: 10.1016/j.enpol.2026.115331