AUSTIN, Texas — Tesla's fastest-growing business kept its momentum in the second quarter, with the company deploying 13.5 GWh of energy storage worldwide — a 53% jump from the first quarter and up 40% from a year earlier.
The figure, disclosed alongside Tesla's July 2 production and delivery report, ranks as the company's second-largest quarterly storage total ever, trailing only the 14.2 GWh record set in the fourth quarter of 2025. It builds on the record Megapack and Megablock pace the division set earlier this year and pushes Tesla's cumulative deployments past 132 GWh since 2016.
A business hitting scale
Tesla's energy storage arm has quietly become one of its most reliable growth stories, expanding even as the automotive market navigated shifting incentives. The Q2 result puts the company firmly on track to exceed its record 2025 deployments, a target management laid out on the first-quarter earnings call.
The surge mirrors a booming U.S. market. Industry data show American energy storage entering what analysts describe as a phase of sustained, high-volume deployment, and Tesla — with its vertically integrated Megapack and new Megablock products — is capturing an outsized share of that demand from utilities and grid operators.
The road to July 22
Tesla paired the storage number with the date of its full quarterly report: the company will host its second-quarter 2026 earnings webcast at 5:30 p.m. Eastern on Wednesday, July 22. That call will fill in the details the delivery report leaves out — revenue, automotive margins, Cybercab progress and Robotaxi economics — and comes on the heels of a record 480,126-vehicle delivery quarter.
Investors will also be listening for updates on Tesla's recently announced virtual power plant collaboration with Sunrun and Renew Home, a program designed to supply flexible power to hyperscalers and grid operators, as well as progress on Elon Musk's ambitions to build out 100 GW of solar manufacturing capacity.
Momentum into the second half
The storage number, while slightly below the roughly 13.8 GWh analysts had modeled, underscores how central the energy division has become to Tesla's growth narrative. According to pv magazine's reporting on the disclosure, Megafactory Shanghai is now running near full capacity, with additional U.S. production coming online through the year.
That expanding footprint sets up a strong second half. With deployments accelerating, new capacity ramping and demand for grid-scale batteries climbing worldwide, Tesla's energy business looks poised to keep outpacing expectations well into 2027.
