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Samsung SDI and Tesla in Talks for Trillion-Won ESS Battery Deal

Tesla will receive lithium-iron-phosphate cells for its Energy Storage System products from Samsung SDI, aiming to produce 30 GWh annually by late 2026 amid supply diversification efforts.

  • On Tuesday, Tesla reached an agreement worth over 3 trillion won with Samsung SDI to supply energy storage cells for Megapack and Powerwall products, produced at their joint venture factory with Stellantis in Indiana.
  • Years of talks culminated in Tesla seeking to diversify battery supply from Chinese suppliers due to tariffs and geopolitical tensions, following a prior ESS deal with LG Energy Solution.
  • Annual supply is pegged at 10 GWh per year for Tesla's ESS needs, using LFP cells for stationary storage, while Samsung SDI targets 30 GWh capacity by the end of next year.
  • The pact bolsters Tesla Energy division, which has been a silver lining amid two years of EV decline, as demand from AI and data center customers for Megapack and Powerwall remains strong into next year.
  • Market reaction was positive as Samsung SDI shares rose by more than 8%, reflecting limited U.S. domestic ESS-capable manufacturers including Samsung SDI and LG Energy Solution, amid South Korean repurposing of EV lines.
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elektroauto-news.net broke the news in on Monday, November 3, 2025.
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