Scania has successfully demonstrated one of the world’s first vehicle-to-grid (V2G) implementations for heavy commercial vehicles using the Megawatt Charging System (MCS), highlighting how battery-electric trucks could become a valuable part of the wider energy ecosystem.
The demonstration shows that electric trucks can offer more than zero-emission freight transport. Through bi-directional charging, heavy-duty EVs can also support electricity grids by supplying stored energy back into the system when parked. This could help stabilize power networks, reduce peak demand pressures, and improve the use of renewable energy sources.
As heavy transport electrification accelerates worldwide, grid operators and fleet owners are facing increasing pressure to manage energy demand more efficiently. Large-scale truck charging can create significant strain on local electricity infrastructure, especially at depots where multiple vehicles charge simultaneously.
At the same time, electric trucks represent large mobile battery assets that often remain parked for extended periods. Vehicle-to-grid technology allows fleet operators to tap into that unused battery capacity to support energy management strategies and potentially generate additional revenue streams.
According to Scania, integrating bi-directional charging into depot operations could improve the use of locally generated renewable electricity, including solar power, while also providing greater flexibility around grid connections and energy consumption.
Tobias Ejderhamn, Global Manager for Transformation & New Business at Scania, said electric trucks could evolve into active energy resources instead of simply consuming electricity. This shift could allow fleet operators to participate in energy flexibility services alongside their transport operations.
The demonstration utilized the new Megawatt Charging System, an ultra-fast charging standard designed specifically for heavy electric trucks. MCS is expected to play a major role in enabling long-haul electric transport thanks to its ability to deliver significantly higher charging power compared to current CCS solutions.
TRATON also participated in the project, focusing on intelligent charging and communication systems. The setup enabled secure real-time communication between the truck, charging equipment, and energy management systems. This allows charging and discharging processes to be dynamically adjusted based on transport schedules and electricity grid conditions.
Yorben Muller, Product Manager Charging at TRATON, described the project as one of the first known demonstrations of vehicle-to-grid functionality using Megawatt Charging System technology for heavy commercial vehicles. The real-time communication between the truck, charger, and energy systems creates the foundation for heavy-duty EVs to become controllable assets within the energy network.
Beyond supporting grid stability, the technology could also strengthen the financial case for battery-electric trucks. Intelligent energy management may help fleet operators optimize charging schedules, lower electricity costs, and make better use of renewable power generation.
The demonstrated system supports several advanced functions, including bi-directional charging and discharging through MCS, backend-controlled energy management, integration with external charging systems, and real-time communication between all connected components.
For fleet operators, the benefits could extend beyond transportation. Vehicle-to-grid technology may help reduce energy expenses, improve depot efficiency, support renewable energy integration, and open access to future electricity balancing and flexibility markets.
As commercial vehicle manufacturers continue expanding their electric truck lineups, demonstrations like this suggest heavy-duty EVs could eventually play a dual role — transporting goods while also helping stabilize increasingly renewable-powered electricity grids.
