Tesla says it will officially inaugurate its new Semi factory in Nevada next month, marking the grand opening of the plant it has designed to build 50,000 electric trucks a year.

The company announced the event through its Tesla Semi account, though the milestone comes roughly five months after Tesla already claimed that the factory started volume production of the truck.

“Inauguration of new Semi factory in Nevada next month,” the Tesla Semi account posted, with an image titled ‘Semi Rollout’ and a date: September 24th 2026.

Tesla built the dedicated facility next to Gigafactory Nevada in Sparks as part of a $3.6 billion expansion it announced in early 2023, and the first truck rolled off the high-volume production line back in April.

That means the “inauguration” is a ceremonial event rather than the start of manufacturing — Tesla has been producing vehicles and delivering to customers as part of test programs for months.

The dedicated Semi plant spans 1.7 million square feet and is supposedly engineered for an annual capacity of 50,000 trucks. Tesla began hiring for the ramp in early 2025.

The key advantage of the site is vertical integration: Tesla has put most manufacturing into the same facility and takes advantage of the neighboring Gigafactory Nevada.

Production model specs are now locked in. Tesla is building two variants — a Standard Range version rated at 325 miles and a Long Range version rated at 500 miles. Both use an 800-kW three-motor powertrain producing more than 1,000 horsepower, and both support Tesla’s Megacharger, which the company says can restore roughly 70% of range in about 30 minutes.

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