With the very early adopters of solar in Germany facing the end of their FiTs in 2020 it certainly does present a significant opportunity for retrofitting energy storage systems. PV owners will be minded to install a storage system so they can maximise their self-consumption as their payments for producing and selling their PV power ends. Also by 2020, battery prices will have continued to drop even further encouraging greater uptake. With smart-offerings from the likes of sonnen, PV owners will have the opportunity to completely overhaul how they buy their energy, cutting out the traditional energy utilities.