“Energy storage is playing an increasingly important role to ensure grid stability and paves the way for a widespread diffusion of renewables around the world, facilitating their integration into electrical grids.”
The structure will be owned by a special purpose vehicle (SPV) which is 90% EGP Germany and 10% ENERTRAG. Leclanché will be a contractor in engineering, procurement and construction (EPC), and will deal with the integration between batteries and conversion systems and with the energy management software.
“Storage systems play a significant role in the stabilisation of the grid and promote the transition to a greater use of renewable sources. They will also help avoid wasting renewable energy in moments when grids have already reached maximum capacity.”
The plant will provide the grid with primary frequency regulation services in real time, contributing to its stability. When the frequency of the grid decreases due to higher energy demand, the battery will go to work, quickly providing stored energy, to then recharge in frequency increase phases caused by lower demand.
In 2017, the BESS (Battery Energy Storage Systems) systems provided about 31% of the demand on the PCR market.
In 2018, the German market of PCR has evolved considerably and the tenders at the beginning of September 2018 have been assigned a total of 1400MW of PCR on an interconnected system that includes, in addition to Germany, also Austria, Belgium, France, the Netherlands and Switzerland.
Furthermore, the integrated use with ENERTRAG wind farms will allow for the use of excess energy produced by the plants to charge the battery, limiting the need of reducing wind energy generation during moments of lower grid demand.
“Commercial batteries and their ability to provide balancing solutions will be one of the main enabling factors in the next phase of the energy transition towards renewables. The Cremzow plant will play a key role in Brandenburg’s gradual abandonment of lignite.”
The challenge of the near future will be, on the one hand, to overcome the limits of lithium batteries and, on the other, to explore technologies able to assure more suitable ones for large-scale storage and for a longer period of time.