Tesla Opens First Megacharger for Semi Trucks
Tesla has opened its first Megacharger station for Semi truck customers in Ontario, California, a key milestone for electric freight logistics. The company is also planning the world's largest supercharger site with 400 stalls in Yermo, CA. These moves signal a major infrastructure buildout to support both commercial and passenger EVs.
The new Megacharger in Ontario, California, is rated for up to 1.2 megawatts, designed to add about 60% of a Semi's range in the 30 minutes mandated for a truck driver's rest break. However, this initial public station is currently operating at a reduced 750 kW. The station's location at 4265 E Guasti Road places it at the critical interchange of the I-10 and I-15 freeways, a major artery for freight moving from the Ports of Los Angeles and Long Beach to inland distribution hubs. While this is the first Megacharger for paying customers, Tesla already operates private sites for its own fleet at Giga Nevada and in Carson, California. The Ontario opening is the start of a much larger network, with Tesla planning 66 Megacharger locations across 15 states, creating charging corridors to support long-haul electric trucking. This infrastructure is crucial as high-volume production of the Tesla Semi is slated to begin in 2026, with a target of producing 50,000 trucks annually at its Nevada facility. Tesla's proprietary Megacharger technology faces competition from the open-standard Megawatt Charging System (MCS). Backed by companies like Daimler, Volvo, and Scania, the MCS standard supports a higher theoretical peak power of up to 3.75 MW. While competitors are preparing MCS-compatible trucks for 2026, Tesla has the advantage of having both its trucks and a customer-facing charging network on the road now. The planned 400-stall Yermo Supercharger site dwarfs Tesla's current largest station, which has 164 stalls. Located on the heavily trafficked I-15 corridor between Los Angeles and Las Vegas, the project will be built in phases, starting with 72 of Tesla's latest V4 Supercharger stalls in 2026. These V4 chargers are designed with higher power output and longer cables to accommodate a wider range of EVs, not just Tesla vehicles.
