For the fourth joint combined project consisting of a solar park plus storage, Tesvolt is supplying two storage containers of the type TPS-E with a total of ten megawatt hours and four megawatts of 4 MW power to Gardessen near Braunschweig in Lower Saxony. The storage containers will be connected to the solar park with a capacity of twelve megawatts. The combined project is being funded by the federal government within the framework of Innovation Tender 1.
See also: Tesvolt and the University of Magdeburg sign cooperation agreement
In the last two years, both companies have already implemented three similar projects: in Großschirma in Saxony, Maulbeerwalde in Brandenburg and Schnaittenbach in Bavaria, battery storage systems with a total of 8.3 megawatt hours were connected to solar parks. Together with the current project, this will be a total of 18.3 megawatt hours. The battery storage systems are not only intended to relieve the electricity grid. The stored electricity is also marketed via arbitrage transactions on the spot markets or participation in balancing power markets.
Ban on bidirectional charging has to be abolished
Nevertheless, the legislator must make improvements to the innovation tenders, demands Philipp Schreiber, project manager for large-scale storage at Tesvolt. "The fact that battery storage systems have so far not been allowed to temporarily store electricity from the grid, i.e. they are not allowed to charge bidirectionally, must be changed urgently." Only then can the existing storage capacity be fully utilised. "This would also be a clear additional incentive to invest in electricity storage, because operators could then earn higher profits by marketing their storage capacity," says Schreiber. This would also eliminate the demand of many project developers for higher feed-in tariffs. (nhp/mfo)
