SK On Targets US Energy Storage Market in Shift From EVs

Why It Matters

Securing large ESS contracts diversifies SK On’s revenue amid a softening EV market and strengthens U.S. supply‑chain resilience against Chinese dominance. The move also signals a strategic shift for Korean battery makers toward high‑growth, grid‑scale storage.

Key Takeaways

• SK On targets >10 GWh US ESS contracts this year
• Shifting 20% of 100 GWh capacity to LFP cells
• Data center demand could hit 78 GWh by 2035
• Electrochemical impedance spectroscopy improves ESS safety
• Competitors LG, Samsung also repurposing EV lines for ESS

Pulse Analysis

The United States is witnessing an unprecedented surge in demand for stationary energy storage, driven by AI‑heavy data centers and expanding renewable‑energy integration. SK On’s aggressive pursuit of more than 10 GWh of contracts reflects this macro trend, as developers seek reliable, non‑flammable LFP batteries to back‑up critical infrastructure. By reallocating a fifth of its global output to LFP chemistry, the Seoul‑based firm aims to capture a slice of a market that BloombergNEF expects to reach 78 GWh by 2035, a figure that will represent nearly one‑tenth of U.S. electricity consumption.

While SK On entered the LFP arena later than Chinese rivals, it is betting on differentiated safety technology—electrochemical impedance spectroscopy—to mitigate fire risks that have plagued large‑scale storage projects. This capability helped the company win over half of a trillion‑won Korean government tender, underscoring the commercial value of advanced diagnostics. Simultaneously, industry peers LG Energy Solution and Samsung SDI are converting EV production lines to ESS cells, collectively targeting over 90 GWh of U.S. capacity this year. The competitive scramble is intensifying as tariff pressures and supply‑chain uncertainties push Western customers to favor non‑Chinese sources.

For investors and policymakers, SK On’s pivot signals a broader realignment of the battery ecosystem toward grid‑scale applications. The shift not only offers a new revenue stream for Korean manufacturers but also contributes to U.S. energy security by diversifying the domestic battery supply base. As the AI‑driven power boom accelerates, firms that can deliver high‑volume, safe LFP solutions are poised to become pivotal players in the transition to a decarbonized grid.