What you need to know:
- New Semi Charging for Business program enables fleets to deploy Megachargers and Basechargers, expanding EV fleet charging infrastructure and supporting depot charging solutions
- The Megacharger delivers up to 1.2 MW ultra-fast charging for long-haul efficiency, while the Basecharger (125 kW) focuses on overnight charging, lower energy costs, and fleet depot optimization
- Megacharger setups start around $188,000 for two units with $0.08/kWh charging rates, while the Basecharger begins at $40,000, making scalable EV charging more attainable for commercial fleets
- Tesla Semi production has begunvat Tesla's Gigafactory Nevada, marking a major milestone for electric semi trucks, commercial EV rollout, and fleet electrification
Tesla confirmed earlier this week that series production has officially begun for the long-waited Tesla Semi at Gigafactory Nevada.
Today, the company has released details of its new "Semi Charging for Business" model, which is aimed directly for companies running vehicle fleets (ideally, but not limited to Tesla Semis).
The program lets businesses buy and set up their own Megachargers, along with the just-unveiled option called the Basecharger, a lower-output charger built specifically for overnight charging and depot-based operations. It could also be a smart solution for drayage as well.
Megachargers vs. Basechargers
The Tesla Megacharger and Basecharger serve different roles within the same charging ecosystem. The Megacharger is a high-power solution, delivering up to 1.2 MW for rapid top-ups during routes, making it ideal for minimizing downtime on long hauls.
Tesla engineers released a video late last year demonstrating a Semi Megacharging session where power output reached a peak of 1.2 MW (1,206 kW).
In contrast, the Basecharger is a lower-power 125 kW option designed for, as previously noted, depot or overnight charging where speed is less critical and cost efficiency is the priority.
How Megachargers and Basechargers work
For context, the Tesla Megacharger is a high-output DC fast charger designed specifically for the Semi. Capable of delivering up to about 1.2 MW of power, it's built to minimize downtime by restoring roughly 60% of the truck's range (around 400 miles) in about 30 minutes, aligning closely with a standard driver rest break.
The setup includes a central power cabinet that distributes a total of 1,200 kW between two charging posts, though each post can access the full 1.2 MW on its own when not sharing the load.
[Related: Tesla updates Megacharger map for the Semi, featuring 64 planned sites and counting]
The new Basecharger is a very interesting and smart addition because it addresses a different need for fleets. Simply put, not every charging situation calls for ultra-high-power charging.
When trucks are parked overnight at depots or distribution hubs, they can recharge at a slower, more cost-efficient pace, thus leaving the high-capacity Megachargers available for on-the-road stops where quick turnarounds are essential.
Megacharger and Basecharger pricing
According to Tesla's online configurator, a setup with two Megachargers starts at $188,000 before taxes and installation costs. For sites that generate revenue, the company also applies a bundled rate of $0.08 per kWh.
The Basecharger, meanwhile, has a significantly cheaper starting price of $40,000 per unit.
Expect more details and Tesla Semi updates throughout next week as Clean Trucking will be covering the 2026 ACT Expo where the Semi will be on full display.
