Tesla has announced that it will hold a keynote event dedicated to its energy storage business on September 8 at 8 p.m. PT/5 p.m. ET. The event, dubbed “Las Megas,” will take place in The Boring Company tunnels in Las Vegas, and while Tesla has been tight-lipped about what will be announced, it is expected to showcase the company’s next-generation Megapack product.
While Tesla is best known for its electric vehicles (EVs), its Energy division has become an increasingly important part of the business, and this keynote is expected to accelerate that momentum.
Tesla’s Megapack 2XL
Currently, Tesla’s flagship grid-scale storage product is the Megapack 2XL, a massive lithium-ion battery system designed for utility projects and large commercial applications. Each unit can store more than 3.9 megawatt-hours (MWh) of energy and deliver up to 1.9 megawatts (MW) of power. The modular design allows energy providers to scale projects quickly, linking dozens or even hundreds of Megapacks together to create storage facilities capable of stabilizing entire power grids.
The 2XL also integrates Tesla’s advanced thermal management and safety features, along with sophisticated power electronics and software that make it easy to integrate with renewable energy sources such as solar and wind. This combination of high capacity, reliability, and seamless grid integration has positioned the Megapack as one of the most sought-after energy storage products in the world.
Driving Tesla’s Energy Business
Over the past two years, Tesla’s energy division has quietly emerged as one of the company’s fastest-growing segments. Demand for large-scale energy storage has soared globally as utilities and governments work to decarbonize power grids and improve resiliency against outages. The Megapack has been central to this growth, consistently outselling Tesla’s smaller Powerwall units on a revenue basis.
In its most recent financial results, Tesla reported that it deployed 9.4 gigawatt-hours (GWh) of energy storage in the second quarter of 2025 alone. That figure represented a sharp increase compared to the 7.6 GWh deployed in Q1, and it put the company on pace for another record year. By comparison, Tesla deployed just 6.5 GWh in Q2 of 2024, highlighting the rapid acceleration of demand.
This surge in deployments has also translated into stronger financial performance. Tesla Energy revenues topped $3.4 billion in Q2 2025, up more than 30% year-over-year, making the division a significant contributor to the company’s overall profitability.
What to Expect at “Las Megas”
While Tesla has not revealed specifics, it is expected the keynote will unveil an updated Megapack platform with higher capacity, improved efficiency, and more competitive cost-per-kilowatt-hour metrics. The move would strengthen Tesla’s leadership in utility-scale energy storage, a sector that could rival, or exceed, the company’s automotive business in the long run.
