Bidirectional charging allows an electric vehicle not only to draw energy from the utility grid but also to feed surplus power back into it—and even supply electricity to your home. It’s common knowledge that bidirectional charging has long been hailed as a breakthrough in energy technology. But is that really true? This article explains the story behind bidirectional charging, how the technology works, and the opportunities it offers.

The first 18 months of field experience with the charging solution SMA EV Charger have shown in Sunny Portal: more than half of the energy used for charging electric vehicles is provided by solar power from your own roof. It is no longer a secret that this allows you to be on the move in a particularly climate-neutral and cost-effective way. But did you know that it means you can even prevent expensive grid expansion and your contribution to the energy transition becomes even more valuable?

The energy transition is also taking place on the road: More and more electric vehicles suitable for everyday use are ensuring the increasing electrification of transportation. An important goal of the mobility transition is to reduce CO₂ emissions in order to achieve climate protection targets. The charging current must then also be generated from renewable energies. PV system operators can charge their electric vehicle with electricity from their own PV system. Solar power from the roof thus is turned into green mileage on the road. Find out here how you can charge your electric vehicle safely and cost-effectively at home with the SMA charging solution.

Thanks to the SMA forecast-based battery charging feature, PV system operators can generate higher PV yields and also lengthen the calendar service life of batteries. With our checklist, you can configure your system in Sunny Portal accordingly, ensuring that no valuable solar power is lost in the future while also extending the service life of your devices.