Tesla has reportedly reached an agreement to purchase more than $2.1 billion (3 trillion won) worth of Energy Storage System (ESS) batteries from Samsung SDI over the next three years. The news was first reported by the Korea Economic Daily, citing an anonymous source within the battery industry, and was subsequently picked up by Reuters. This potential partnership underscores Tesla's efforts to diversify its battery supply chain and ramp up production for its energy division, a key growth area for the company. While the deal points to a significant strategic move, Samsung SDI stated that nothing had been officially decided yet. Tesla did not immediately comment on the report.