HPS equips first multi-family building with combined battery and hydrogen storage system

HPS Home Power Solutions AG (HPS), a German provider of green-hydrogen-based energy storage systems for buildings, has commissioned its largest project to date.

In Bad Kissingen, Bavaria, nine cascading »Picea« systems with a total capacity of 13,500 kilowatt hours supply a building with six residential units. The electricity is produced by a 180 kW PV system installed on the roof. Since the process heat generated is used in the building, the overall utilization rate is 90 percent, according to HPS.

The Picea system, which is now being used for the first time in an apartment building, consists of a commercially available battery as short-term storage to make solar power from the day usable in the evening, as well as long-term storage, in which electricity is converted into hydrogen by means of an electrolyzer in the summer and is then available again as electricity in the winter after being converted back in a fuel cell. In addition, there is a ventilation system with heat recovery for heating support. According to HPS, the price is between 105,000 and 145,000 euros per Picea system.