VoltStorage Customer Exeperiences
Christian Kay – Energy Consultant
As an independent energy consultant, Christian Kay has already planned many photovoltaic and energy storage systems for private customers in the past. Thus, he was able to familiarize himself with various lithium-based storage solutions. In Christian Kay’s opinion, however, it was important to focus on lithium-free storage systems, since lithium deposits were scarce and should therefore be reserved for e-mobility. For this reason, VoltStorage’s Vanadium Redox Flow (VRF) technology lies particularly close to Christian Kay’s heart. “It is very important to me to promote VRF technology and keep it in Germany. After Germany has already given up PV technology, we should try to advance battery technology in order to promote Germany as an energy storage technology hub,” says Kay.
Christian Kay is pleased that VoltStorage’s core components originate from in-house development and production. This is not the case for other storage providers. “I don’t need a supplier who just provides the packaging for a storage system and has to import the key components,” says Kay. The energy consultant’s VoltStorage battery storage system went into operation in July 2019. Due to the combination of PV system and home battery system, Kay was able to achieve a degree of self-sufficiency of 84% in the first months after taking the home battery into operation.