Since May 2013, more than 35,000 home storage systems have been installed in Germany. Due to superior performance and significant price degression, lithium ion batteries (LiBs) are the dominating technolog.
In general, a basic solar trailer (plug-and-play PV only) starts around €21,500 for a 12.6 kWp system with 41 kWh battery, while mid-range hybrid containers (80–200 kW PV with LiFePO₄ storage) often cost €30,900–€43,100; small off-grid units can be found for ~$9,850–$15,800, and turnkey BESS containers (500 kW–2 MWh) command $180,000–$190,000 or more.
