As part of the energy turnaround, 55 to 60 percent of our electricity in Germany by 2035 and 80 percent by 2050 will come from renewable energies. In doing so, wind energy and photovoltaics, which feed in fluctuatingly, are the main components.
Given the growing share of fluctuating renewables, the electricity system needs to become more flexible in order to maintain system and supply security. Energy storage is one of several options to increase the flexibility of the energy supply. This is how electricity storage can balance generation and consumption. For example, in times of high wind, they can absorb electricity that they can feed into the grid in times of calm and overcast skies. They therefore offer the possibility of decoupling generation and consumption over time. In addition, power storage can also provide so-called control power and thereby help to keep the grid frequency stable.