A filing with the California Air Resources Board (CARB) revealed the official battery specifications for both Tesla Semi trims now entering production at Gigafactory Nevada.
The Tesla Semi is rated for a gross combination weight of 82,000 lb.
As confirmed by the CARB executive order, the Long Range delivers 800 kW peak and steady power, while the Standard Range delivers 525 kW.
The Standard Range model uses a smaller 548 kWh pack and is rated at 525 kW peak and steady motor power — roughly 34% less than the Long Range.
Both variants use Li-Ion cells with NCMA (nickel-cobalt-manganese-aluminium) chemistry, the executive order specifies.
Tesla had previously cited 800 kW peak power for the Semi without distinguishing between trims, leading most coverage to assume both variants shared the same motor configuration.
Speaking with Kyle Conner from Out of Spec at ACT Expo earlier this week, Semi program head Dan Priestley confirmed the pack configuration and offered new weight details.
The Standard Range is “a few thousand pounds lighter,” with a tare weight below 20,000 lb — translating to roughly 48,000 lb of payload in a typical dry van setup, versus approximately 45,000 lb for the Long Range.
“It really just depends on your operation and what you need,” Priestley said, adding that the Standard Range “works really well for lower range or more mass-sensitive applications.”
Specs Already Known
The CARB filing adds to a growing body of confirmed specifications.
The Tesla Semi is rated for a gross combination weight of 82,000 lb and delivers 800 kW of both peak and steady drive power.
The Long Range offers up to 500 miles of range at full load, while the Standard Range is rated at 325 miles.
The second-generation truck entering volume production achieves 1.7 kWh per mile — a 15% efficiency improvement over the original units delivered to PepsiCo in late 2022 — while shedding roughly 1,000 lb compared to its predecessor.
Tesla says the truck can recover up to 70% of its range in approximately 30 minutes using its Megachargers.
The company has deployed its first public Megacharger in Southern California and has partnered with Pilot Travel Centers to install Semi chargers along major US highways, with initial sites expected to open in summer 2026.
Fleet operators have reported energy consumption broadly in line with Tesla‘s claims.
DHL Supply Chain logged 1.72 kWh per mile on a fully loaded 390-mile route, ArcBest recorded 1.55 kWh per mile across 4,494 miles, and Mone Transport clocked 1.64 kWh per mile across 4,700 miles using a first-generation truck.
Production Timeline
The first Tesla Semi rolled off the high-volume production line at Gigafactory Nevada on April 30, marking the transition from pilot builds to industrial-scale manufacturing.
The company unveiled the truck in 2017 and first planned to begin production in 2019; however, the timeline slipped consecutively as the company focused on other projects.
The dedicated 1.7-million-square-foot facility is designed for an annual capacity of 50,000 trucks, though Tesla has signaled the ramp will be gradual.
“You should expect that initial production of Cybercab and Semi will be very slow, but then ramping up, and going exponential towards the end of the year and certainly next year,” CEO Elon Musk said during the latest earnings call in late April.
Tesla guided full-year 2026 capital expenditures above $20 billion, with investments focused on factories for the Semi, Cybercab, and energy storage products.
A key advantage of the Nevada site is vertical integration — the 4680 cells powering the Semi are manufactured in the same complex.
Fleet Deals
Earlier this week, California-based WattEV announced a 370-truck deal at ACT Expo — the largest single electric truck order in California history, representing approximately $100 million in revenue.
The first 50 units are scheduled for delivery in 2026, with the full fleet expected by the end of 2027.
More than 300 of those trucks will be deployed under a joint program with the Port of Oakland.
Days earlier, Forum Mobility had also confirmed a 40-unit order with freight operator Big F Transport.
The trucks will operate from a depot in Rancho Dominguez, expected to open in the first quarter of 2027.
DHL has confirmed an order beyond “just a handful” of trucks for 2026 delivery late last year, with plans to operate the Semi beyond California in states including Ohio and Pennsylvania.
Uber Freight — led by a former Tesla charging executive — has also partnered with Tesla to deploy Semis through its Dedicated EV Fleet Accelerator Program, offering a subsidized entry point for participating fleets.
Incentive Programs
Tesla also used its ACT Expo booth to highlight a slate of federal and state incentive programs available — or soon to be available — to Semi buyers across the US.
The list was shared by Tesla shareholder and X user Sawyer Merritt on Wednesday.
Among currently open programs, California’s HVIP offers over $100 million in funding for electric Class 8 trucks, with $120,000 to $330,000 available per Semi on a first-come, first-served basis.
Oregon’s ZERO Fleet program has over $17 million available, offering up to $120,000 per truck, while Washington’s WAZIP program provides up to $175,000 per Class 8 electric truck from a $112 million total pool — with the Long Range Tesla Semi eligible for the full rebate amount.
Two additional programs are expected to open in the coming months.
California’s Clean Fuel Rewards program is expected to open in May 2026 with up to $200 million in total funding and will be stackable with HVIP for Class 8 trucks.
The Clean Ports Voucher Incentive Program, anticipated for summer 2026, is set to offer $55 million in funding for fleets operating at the Ports of New York, New Jersey, and Baltimore, with rebates likely covering up to $200,000 per truck — roughly 74% of the Semi’s cost — along with funding for charging infrastructure.
