Tesla is set to construct the world’s most extensive Supercharger facility, featuring an unprecedented 400 charging stalls, in Yermo, California. The project will be implemented in multiple phases, signaling a significant expansion of the electric vehicle charging infrastructure.
Massive Expansion in Yermo, California
According to reports from Tesla supercharger development expert MarcoRP on X, this ambitious project will house the next-generation V4 superchargers. Construction is slated to begin in the coming months, marking a substantial investment in charging capacity.
MarcoRP shared the news, stating, “Tesla is planning an absolutely massive Supercharger expansion in Yermo, California!! Over the course of 6 phases, Tesla is set to add over 400 V4 stalls.” The development is situated within a commercial area known as Eddie World 2.
The plans also indicate the integration of solar canopies over the charging bays, a feature widely appreciated by electric vehicle (EV) drivers for its environmental benefits and potential to reduce charging costs.
Introducing the Next-Generation V4 Superchargers
This development leverages Tesla’s upgraded V4 supercharging cabinets, first revealed in November 2024. These advanced cabinets are engineered to deliver up to 500 kW per stall, significantly enhancing charging speeds for compatible vehicles.
The new V4 cabinets operate within a voltage range of 400-1,000 V, enabling rapid charging for a wide array of electric cars, including models from Hyundai, Kia, Porsche, and Tesla’s own Cybertruck. This upgrade ensures that the charging network can accommodate the growing diversity and performance of EVs on the market.
A key innovation in the V4 system is its capacity to support up to eight charging stalls per cabinet, effectively doubling the stall count compared to existing V4 sites. This improvement streamlines the deployment of larger charging locations, making projects like the 400-stall Yermo site more feasible.
Tesla has previously highlighted that the new V4 cabinets and their associated electrical infrastructure are designed to reduce complexity and minimize the physical footprint required at each charging location. This efficiency is crucial for enabling the construction of larger, more capable Supercharger stations.
Tesla’s Strategy for Scalable Charging Infrastructure
The Yermo project is part of a broader trend of Tesla deploying increasingly large-scale Supercharger sites globally. In July 2025, the company opened a substantial 168-stall Supercharger station, which was notably equipped with a solar farm and large Megapack battery storage.
In Australia, while still leading in fast-charging site development, the largest existing site as of early 2026 is in Goulburn, NSW, featuring 20 charging stalls. The new California site dwarfs even large-scale domestic installations, underscoring Tesla’s commitment to global charging network expansion.
With hundreds of thousands of new EVs entering the global market annually, the demand for reliable and widespread fast-charging solutions is escalating rapidly. The 400-stall facility in Yermo demonstrates the significant scale Tesla is prepared to implement to support the soaring adoption of electric vehicles.
Future Implications for EV Charging
Tesla’s continued rollout of larger charging sites is anticipated to bring about more competitive pricing, helping to maintain lower Supercharger costs compared to other high-powered charging networks. The company emphasizes a focus on reliability and the development of expansive, efficient charging hubs.
The company’s national presence in Australia is approaching 150 sites. Future deployments are expected to continue this trend of larger, more efficient installations, further supporting the transition to electric mobility both domestically and internationally.