After years of limited pilot deliveries, Tesla's Class 8 electric truck crossed a manufacturing milestone on April 29, 2026: the first Semi rolled off a dedicated high-volume production line inside a 1.7-million-square-foot facility adjacent to Gigafactory Nevada in Sparks, Nevada.
The production launch followed immediately by a landmark commercial order — WattEV's 370-truck deal in May — signals that the Tesla Semi has moved from prototype showcase to real commercial product.
The Factory: Scale Built for Demand
The dedicated Semi factory is co-located with Tesla's existing Nevada Gigafactory, which produces 4680 battery cells — the same cells that power the Semi's 500-mile long-range variant. The physical proximity is deliberate: battery supply is the primary constraint on Semi output, and having cell manufacturing on the same campus reduces logistics complexity significantly.
| Specification | Detail |
|---|---|
| Factory Location | Sparks, Nevada (adjacent to Gigafactory Nevada) |
| Facility Size | 1.7 million sq ft |
| Annual Production Capacity | 50,000 units |
| Volume Production Start | April 29, 2026 |
| 2026 Delivery Projection | 5,000–15,000 units (analyst estimates) |
| Long Range Price (500 mi) | $290,000 |
| Standard Range Price (325 mi) | $260,000 |
WattEV's 370-Truck Order: Largest in Semi History
One week after the production launch was confirmed, WattEV announced at ACT Expo in Las Vegas that it had ordered 370 Tesla Semi Class 8 electric trucks — the largest single Semi order ever placed. The deal is estimated at approximately $100 million in contract value.
"We selected the Tesla Semi based on cost, performance and availability after issuing a public request for proposals." — Salim Youssefzadeh, CEO, WattEV
WattEV operates a truck-as-a-service model, leasing electric Class 8 trucks to independent owner-operators for port drayage and regional freight. More than 300 of the 370 Semis will operate under a joint program with the Port of Oakland, one of the busiest container ports on the West Coast.
Delivery timeline:
- First 50 units: 2026
- Full 370-unit deployment: by end of 2027
Charging Infrastructure: Megawatt-Scale for Long-Haul
WattEV's deployment comes with a parallel infrastructure build-out. The company plans charging depots equipped with Tesla's Megawatt Charging System (MCS) — capable of adding 300 miles of range in roughly 30 minutes. Initial locations include Port of Oakland and Fresno, with Stockton and Sacramento sites to follow later in 2026.
MCS charging at scale addresses one of trucking's core objections to electrification: dwell time. At 1 MW peak charging, a fully discharged Semi can reach operational range within a standard driver rest break.
Market Demand Signals
Demand signals have been strong ahead of volume production. Between January 2025 and February 2026, the Tesla Semi accounted for 965 of 1,067 California Clean Truck & Bus Voucher applications — a 90.4% share of all incentive requests for Class 8 EVs in the state. California's zero-emission truck mandates have created structural demand that other electric truck makers have struggled to meet at scale.
Analysts project 2026 deliveries in the range of 5,000 to 15,000 units, though production ramp speed — particularly battery cell availability — will determine where final numbers land. Tesla has said it expects to build "many thousands" of Semis before year-end.
The Bottom Line for Fleet Operators
For fleet operators watching the Semi from the sidelines, the Nevada production launch and WattEV's order signal that the product is real and commercially viable at scale. At $290,000 for the long-range variant, the Semi commands a significant premium over diesel Class 8 trucks — but with fuel savings, lower maintenance costs, and California incentive stacking, the total cost of ownership case is increasingly compelling for high-utilization port and regional drayage operations.
Whether Tesla hits the optimistic end of the 15,000-unit 2026 estimate remains to be seen. But the Semi is no longer a concept. It's on a production line, and orders are real.
Photo: Industrial factory floor / Pexels