Direct:
The US grid storage market is being forcibly rewired around domestic LFP supply, and the math finally works because of policy rather than cost. A new DigiTimes report frames it as a rush, and the parallel reporting backs that framing. As of January 1, 2026, Section 301 duties on Chinese non-EV lithium-ion batteries stepped from 7.5% to 25%, stacking on top of reciprocal and baseline tariffs. CSIS pegs the effective rate at roughly 58% as of January, and Teneo's earlier modeling reached as high as 80% under more aggressive assumptions, though the USITC's March rejection of AD/CVD duties on Chinese active anode material trimmed the upper bound.
The wrinkle is that US-made LFP still costs more even after tariffs. CSIS cites industry analysis indicating that domestic cells need the 30% Investment Tax Credit to reach parity with imports. The One Big Beautiful Bill Act kept that credit intact for storage while tightening Foreign Entity of Concern rules through two separate tracks. For Section 48E storage projects, the Material Assistance Cost Ratio of non-prohibited foreign content starts at 55% in 2026, rises to 70% by 2029, and lands at 75% thereafter. The steeper 85% threshold applies to 45X battery-component eligibility, not the project itself. Non-compliant projects lose ITC eligibility, which industry analysts put at roughly a 43% cost penalty.
What's filling the gap is repurposed Korean EV capacity. LG Energy Solution (KRX:373220) converted lines at its Holland, Michigan complex to LFP and is targeting over 30 GWh by end of 2026. The AESC-built Smyrna, Tennessee plant, now majority-owned by Fixx Energy with AESC continuing as a technology partner, is supplying storage cells. SK Battery America in Georgia and Samsung SDI (KRX:006400) in Kokomo, Indiana both intend to begin ESS cell production in 2026. The US Energy Storage Coalition expects domestic factories to cover 100% of US storage demand this year, with Intertek CEA forecasting roughly a 10% FEOC-compliant surplus.
One caveat worth naming: the USITC ruling against AD/CVD duties on Chinese graphite anode material keeps that 92%-China-controlled input flowing into “domestic” cells. The FEOC framework doesn't fully resolve that. Cell-level supply is shifting faster than the materials beneath it.
Sources:
- DigiTimes, “US energy storage market rushes to buy domestic made batteries” (May 14, 2026)
- CSIS, “A New Phase for the U.S. Battery Industry” (May 2026)
- Teneo, “OB3's Impact on U.S. Energy Storage” (Aug 2025)
- IRS Notice 2026-15 and Latham & Watkins summary of the One Big Beautiful Bill
- USITC publication 5719 on Chinese active anode material (Mar 2026)
- Solar Power World, “AESC sells Tennessee plant to Fixx Energy” (May 2026)
- Solar Power World, “US on way to having an oversupply of ESS battery cells” (Jan 2026), citing US Energy Storage Coalition via Canary Media
- Energy-Storage.News, “LG ES ramps US BESS cell production” (Jul 2025)
- Energy-Storage.News, “US battery manufacturing could cover domestic BESS demand” (Jan 2026)
Reddit: https://ift.tt/bA7ZaSf