South Korea's leading battery manufacturers have officially asked the government to change the rules for its large-scale Energy Storage System (ESS) auctions.
At the heart of this request is a battle against plummeting prices. Globally, the cost of batteries, especially the LFP (Lithium Iron Phosphate) type dominated by Chinese companies, has fallen sharply. This has created intense price competition in the Korean ESS market, squeezing the profit margins of domestic companies. The manufacturers argue that a system focused purely on the lowest price overlooks critical factors like long-term safety and contributions to the local economy.
The government's auction system has already been evolving. The first auction in 2025 was heavily weighted towards price, and Samsung SDI emerged as the clear winner. However, recognizing the potential downsides, regulators adjusted the criteria for the second auction in early 2026. They reduced the weight of price from 60% to 50%, giving more importance to non-price factors like fire safety technology and the use of domestic supply chains.
This change had a significant impact. In the second auction, SK On, which had zero share in the first round, surprisingly captured over 50% of the contracts. This dramatic reversal demonstrated that even a small shift in the evaluation criteria could completely reshape the competitive landscape, rewarding companies that invested in areas beyond just cost-cutting.
Building on this precedent, the "Big 3" battery makers are now advocating for a further reduction in the price component for the upcoming third auction, possibly to as low as 40%. Their goal is to create a market that values their technological advantages, robust safety standards, and domestic production capabilities—strengths that are not always reflected in the initial price tag. This isn't just about winning contracts; it's about ensuring the long-term sustainability and profitability of their ESS business.
Ultimately, this situation highlights a classic tension between free-market price discovery and strategic industrial policy. The government, through the KPX (Korea Power Exchange), must decide whether to let the lowest price win or to deliberately design a market that fosters a resilient domestic industry and prioritizes safety. The rules for the third auction will be a clear indicator of which direction Korea's energy future is headed.
- ESS (Energy Storage System): A large-scale battery system used to store electrical energy and release it when needed, helping to stabilize the power grid.
- LFP (Lithium Iron Phosphate): A type of lithium-ion battery known for its lower cost and high safety, which has become popular in ESS applications, particularly from Chinese manufacturers.
- KPX (Korea Power Exchange): The organization responsible for operating South Korea's electricity market and power system, including managing the ESS auctions.