德国储能半年冲刺22.1吉瓦时，户储、工商储、大储各显神通

Core Insights - The rapid expansion of battery storage capacity in Germany is evident, with nearly 2 million systems operational by mid-2025, totaling a power capacity of 14.535 GW and usable storage capacity of approximately 22.1 GWh [1][2]. Summary by Sections Battery Storage Systems Overview - The majority of the registered battery storage systems are small photovoltaic home storage units, accounting for 196.7 million units with a total power of 11.5 GW and usable capacity nearing 18.3 GWh [1]. - There are 14,827 medium-scale commercial storage systems with a total power of 663 MW and a capacity exceeding 900 MWh [1]. New Installations in 2025 - Over 250,000 new battery storage systems were installed in the first half of 2025, contributing nearly 2 GW of power and 3.55 GWh of capacity [2][3]. - Among the new installations, 73 large battery storage systems added 509.5 MW of power and 690 MWh of capacity, while small photovoltaic home storage units accounted for 251,948 new units, providing 1.34 GW of power and nearly 2.7 GWh of capacity [3][4]. Future Planning and Demand - There are currently 19,720 storage systems in the planning stage, with a total planned output of approximately 4.7 GW and capacity exceeding 9.4 GWh [4]. - The expansion of battery storage is driven by increasing demand, highlighted by the occurrence of 389 hours of negative wholesale electricity prices in the first half of 2025 [4].