Anyone who favours ecology also builds an impressive photovoltaic system on the roof, as can be seen here on the uptownBasel building. This PV system supplies electricity for the building and for electromobility. Invisia ensures that the electric cars are charged with CO2-neutral electricity.

Trends have been set here. With bidirectional charging, electric vehicles can not only absorb electricity, but also feed electricity into the grid. This system can help to stabilise the electricity grid by storing surplus electricity when demand is low and feeding it back into the grid when demand is high. In addition, bidirectional charging enables car owners to use their vehicle as a mobile energy storage unit, for example to supply their home with electricity or to sell electricity to others.

To summarise, these are some of the advantages of bidirectional charging:

• Stabilisation of the electricity grid: Buffering of energy surpluses and supply in the event of high demand
• Increased energy efficiency: Optimised use of renewable energy sources
• Emergency power supply: Possibility of supplying the home in the event of power outages
• Cost savings: sale of surplus electricity to the grid operator
• Promotion of renewable energies: support for a sustainable energy ecosystem

Standard 22kW charging stations from ABB were installed, which are controlled via the Invisia load and charging management system and fed with PV power where possible. In this way, the DC charging stations from EVTEC, which are located outdoors, are also supplied with energy from the PV system.

The Invisia server is used for load and charging management.