Tesla (TSLA) Energy Storage Deployments Drop 15% in Q1, Halting Growth Streak

Tesla's (TSLA) energy storage business, a previously stable growth engine, saw its deployments decline 15% year-over-year in Q1 2026, as announced in April 2026. This unexpected downturn raises concerns about the segment's sustained growth after years of consistent expansion that offset fluctuating electric vehicle sales. The energy storage and solar segment's combined revenue surged 358% from $2.8 billion in 2021 to $12.8 billion in 2025. Annual storage deployments doubled in 2024 and grew 49% in 2025 to 46.7 GWh. This growth contrasted with declining EV sales, which fell from a peak of $82.4 billion in 2023 to $69.5 billion in 2025. Analysts attribute the Q1 dip to project timing and potential severe winter weather, rather than a long-term trend reversal. Tesla plans to mass-produce the more powerful Megapack 3 in H2 2026 and opened a new 7 GWh cell factory in Nevada in January 2026. The company also secured a $4.3 billion supply deal with LG Energy Solution for 2027 and benefits from surging data center demand, including a $430 million Megapack sale to xAI in 2025.