One of the busiest heavy-duty EV charging hubs in the US just took a decisive step forward. The WattEV charging depot in San Bernardino has completed a major expansion, allowing it to handle up to 200 electric semi-truck charging sessions per day—a figure that puts it firmly in diesel truck-stop territory.
But capacity isn’t the only story here. The site now supports megawatt charging, meaning trucks compatible with the MCS (Megawatt Charging System) standard can replenish their massive batteries far faster than before. With more than 11 MW of total charging power, the depot combines thirty 250 kW CCS chargers with six ultra-powerful 1.2 MW MCS units, future-proofing the site for the next generation of electric freight vehicles.
What makes the expansion more meaningful is how it fits into WattEV’s broader model. The company doesn’t just sell electrons—it operates its own electric semi fleet and offers Truck-as-a-Service, bundling vehicles, charging, maintenance, and routing software into a single solution. According to the company, sustained real-world usage—averaging around 700 MWh per month—made the expansion unavoidable rather than experimental.
Strategically, San Bernardino sits at the heart of one of the most freight-dense regions in the country, linking ports, warehouses, and inland distribution corridors. Scaling charging infrastructure here directly supports day-to-day commercial operations, not pilot projects.
Final take: This isn’t a flashy concept or a press-only milestone. It’s a sign that electric trucking infrastructure is starting to operate at diesel scale—and once that threshold is crossed, the transition stops being theoretical and starts becoming inevitable.
