As part of the city’s contribution to the nationwide Digital Day, the MOBILITIES for EU team released a video highlighting how future-ready energy and mobility concepts are being brought to life through engaging, interactive tools. The event featured a dynamic on-site presentation where visitors could experience the potential of bidirectional charging and smart urban energy systems firsthand.

At the center of the showcase stood the E-City Game, a playful yet educational tool that allowed participants to explore how electric vehicles can serve as mobile energy storage units. Visitors were invited to try out two different modes:

• In Quiz Mode, they used tablets to play through a set of questions introducing the logic and benefits of bidirectional charging, learning how electric cars can both consume and return energy to the grid.
• In Discovery Mode, the game was connected to a physical demonstrator that visualised energy flows between residential areas, industrial zones, power plants, solar panels, stationary batteries, and electric vehicles. Using LED lines, the demonstrator showed how energy moves through the system in real time.

Depending on the selected energy sources (renewable, conventional, or mixed), electricity prices (low, medium, high), and vehicle movement, the colors and directions of the energy flows shifted dynamically, illustrating changes in storage levels and associated CO₂ emissions. The experience offered an intuitive look into the complexities of managing urban energy systems and the role of smart charging in reducing environmental impact.

🎥Watch the full video here.