Tesla has opened its first Megacharger station for Semi customers in Ontario, California, marking a major milestone in its effort to build a charging network for electric trucks. The launch coincides with Tesla ramping up Semi production at its dedicated factory in Nevada and accelerating plans to roll out 66 Megacharger locations across the U.S.
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The Tesla Semi team announced the opening of operations, confirming that the Megacharger station at 4265 E Guasti Road in Ontario is now operational for Semi fleet customers. The location was strategically chosen in the Inland Empire, one of the world’s busiest freight corridors, near the intersection of I-10 and I-15.
This location is critical for electric trucks that transport goods between the Ports of Los Angeles and Long Beach and major distribution centers further inland. Tesla Megachargers can provide up to 1.2 MW of charging power, enough to replenish up to 60% of the Semi’s range in about 30 minutes, making long-distance electric transportation viable during mandatory driver rest breaks.
However, this first public Megacharger is limited to 750 kW. Tesla already has two other Megacharger locations in operation — one at Giga Nevada in Sparks and a dedicated facility in Carson, California, near the Port of Long Beach. These have primarily served its own fleet operations, making the Ontario location the first station to be opened explicitly for customer use.
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This launch is part of a broader infrastructure push that has accelerated significantly in recent months. In February, Tesla added 64 new Megacharger locations to its map, bringing the total to 66 planned locations across 15 states.
Texas leads with 19 planned locations, followed by California with 17. The network targets the busiest freight corridors in North America: I-5 on the West Coast, I-10 as an east-west artery, and I-95 and I-75 along the East Coast. Tesla Semi program head Dan Priestleysaid the company aims to deploy 46 Megacharger stations by early 2027, with about 37 locations planned for 2026.
Additionally, Tesla has secured a deal with Pilot, the nation’s largest truck stop operator, to install Megacharger stations at select Pilot travel centers along I-5, I-10 and other major corridors. The first Pilot locations are expected to open by summer 2026, with each location hosting 4 to 8 Megacharger stations. While Tesla is moving quickly, it is not the only player in the market.
The Megawatt Charging System (MCS), an open industry standard supporting up to 3.75 MW, is gaining traction in Europe and the US.
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Truck manufacturers Daimler, Volvo and Scania are preparing MCS-compatible electric trucks for commercial deployment in 2026. Kempower is also deploying MCS infrastructure at a truck fleet hub in San Bernardino, near Tesla’s new Ontario station. Tesla’s advantage lies in already having trucks on the road and chargers in operation, while competitors are still in the megawatt charging announcement phase.
