Tesla has opened its first publicly accessible Megacharger station for its electric Semi trucks in the United States, marking a step toward building a dedicated charging network for commercial electric freight vehicles.
The new charging site is located at 4265 E Guasti Road in Ontario, California, and is available to Tesla Semi fleet customers. Unlike earlier Megacharger installations, which primarily served Tesla’s internal fleet operations, the Ontario location appears to be accessible to external customers operating Tesla’s electric trucks.
Tesla announced the opening of the site on social media. The station currently offers charging power of about 750 kilowatts, although Tesla’s Megacharger technology is designed to support charging speeds of up to 1.2 megawatts.
The Ontario station is the company’s third Megacharger location in the U.S. Tesla also operates truck charging facilities at its Gigafactory in Nevada and another in Carson, California near the Port of Long Beach. Those sites, however, are largely reserved for Tesla and select partners.
The launch of the first customer-facing Megacharger signals progress in Tesla’s long-delayed Semi program and its supporting infrastructure.
Tesla has recently expanded its network plans, adding more than 60 future Megacharger locations to its “Find Us” charging map. Including the three operational sites, the map now shows 65 planned heavy-duty charging locations across 15 U.S. states.
Texas currently leads the planned rollout with 19 proposed sites, followed by California with 17 locations.
Many of the new locations are still marked as “coming soon,” and Tesla has not confirmed exact opening dates. However, Dan Priestley, head of the Tesla Semi program, said in April 2025 that the company aims to build 46 Megacharger stations by early 2027. Tesla’s fourth-quarter financial report also indicated that 37 truck charging sites are planned for commissioning during 2026.
Tesla is also partnering with Pilot Travel Centers to expand the network. Under the agreement announced in January, Tesla Semi charging stations will be installed at selected Pilot truck stop locations in states including California, Georgia, Nevada, New Mexico and Texas.
Construction of those sites is expected to begin in the first half of 2026, with initial stations potentially opening as early as summer 2026. Each location is expected to include four to eight charging stalls using Tesla’s V4 charging technology.
The V4 system supports a decentralized architecture that separates the charging units from a central power module known as a “Powerunit.” When fully deployed, the technology can deliver charging speeds of up to 1.2 megawatts per station, enabling much of the Tesla Semi’s approximately 800-kilometer driving range to be restored in about 30 minutes.
Initially, the truck charging network will be limited to Tesla customers. “This network will initially focus on providing charging infrastructure for Tesla’s Semi trucks,” the company said. However, Tesla has indicated that the stations could eventually be opened to other truck brands, similar to the gradual expansion of its Supercharger network to non-Tesla passenger vehicles.
The infrastructure expansion comes as Tesla prepares for the broader launch of the Semi truck. Production is expected to take place at a dedicated facility near the company’s Gigafactory Nevada, which is designed to produce up to 50,000 vehicles annually.
First unveiled in 2017 and originally expected to enter production in 2019, the Tesla Semi is now projected to reach the market around 2026.
Tesla has also signaled plans to expand the electric truck beyond North America. The vehicle drew attention during its appearance at the IAA Transportation show in Hanover, Germany, where company representatives said a European launch would likely occur after the initial U.S. rollout.