What you need to know:
- Kempower, Windrose, and EV Realty complete North America's first Megawatt Charging System (MCS) charging session, advancing heavy-duty EV charging infrastructure
- The MCS technology delivers over 1 MW of power, enabling ultra-fast EV charging, improved standardization, and greater fleet operational efficiency
- EV Realty's San Bernardino hub features 1.2 MW charging capacity, liquid-cooled cables, and infrastructure designed for commercial electric truck fleets
- The milestone supports upcoming deployments like the Tesla Semi and signals growing momentum for zero-emission freight and fleet electrification in North America
As the industry moves closer to the start of series production for the Tesla Semi, Kempower, Windrose, and EV Realty are advancing their own charging infrastructure efforts.
The trio have just announced the completion of the first Megawatt Charging System (MCS) session using a Kempower Mega Satellite unit in North America, marking a key milestone toward commercial deployment of high-capacity charging for fleet and infrastructure operators at EV Realty's San Bernardino, California hub.
[Related: Megawatt charging explained: What it is and why it matters]
The MSC is capable of delivering more than 1 MW of power, and is designed to accelerate charging speeds while improving standardization and operational flexibility. The technology is expected to play a vital role in future heavy-duty trucks, with several manufacturers already beginning to adopt MCS-compatible platforms, including Windrose.
"This milestone of the first successful MCS charging session in North America with Kempower hardware marks a major step for heavy-duty charging in the region, demonstrating real-world interoperability and reliable delivery," said Kempower VP of Markets and Products, Jed Routh. "The collaboration with EV Realty makes this possible, positioning Kempower's reliable, fixable charging solutions to support the continued electrification of heavy-duty transport in North America."
[Related: 2025 was a tough year for commercial ZEVs, but the transition still moves forward in 2026 and beyond]
As Clean Trucking recently reported, the San Bernardino charging hub is equipped with a 1,200 kW Kempower Power Unit linked to two Mega Satellite MCS dispensers, providing up to 1.2 MW and 1,500 Ampere of continuous output. Paired with liquid-cooled cables, the system is engineered to sustain high-power charging and improve turnaround times for heavy-duty electric fleets. The site is scheduled to open in April 2026.
"MCS is a potential game changer for fleets looking to reduce dwell times and improve the efficiency of their operations. Fleets are excited about the trucks but have questions about where they will be able to charge," said EV Realty's Chief Commercial Officer, Suncheth Bhat. "We are building sites that can serve any heavy-duty truck, including those utilizing MCS. This test confirms that we will be ready for real-world MCS charging when the trucks hit the road later this year."
