Since the upturn in renewable energies, electricity supply has been undergoing a global transformation. Electricity which is generated locally and renewably should be distributed intelligently, stored efficiently and consumed sensibly – whether in private homes, the public grid or transportation. As energy from renewable sources is not always uniformly available, there is a need for intelligent infrastructure, innovative energy storage systems and sector coupling – that is, connecting the electricity, heating and mobility sectors.
In Germany, the combination of photovoltaics and e-mobility is especially profitable for photovoltaic installations with a capacity of 10 kW or less, as they are not subject to the EEG levy for self-consumption. As a result, the self-generated solar power costs less than half as much as electricity purchased from providers. It makes more sense to consume as much of the self-generated solar power as possible, and if necessary to store it temporarily, than to feed it into the grid at no particular profit.
Electric car developments continue to move forward. In the future, it will be possible to channel solar power from an electric car back into the house or feed it into the grid via a bidirectional connection. In this way, the electric car can take on the role of a battery storage system. When integrated into the electricity balancing market as part of a swarm storage system, it can help to stabilize the grid.