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A cabinet full of clean energy

The Picea system’s hydrogen tanks

These tanks, which have not yet been fitted with cladding, store hydrogen for use in the dark winter months. This enables the Picea system to supply the family with plenty of energy all year round. (Copyright: HPS / Philipp Bögle)

Living without a grid connection – a dream that has come true for one family living near the Bavarian city of Augsburg. The single-family home built according to the passive house standard gets all of its energy from its own photovoltaic installation, which is combined with a battery storage system, electrolyzer and fuel cell to ensure a plentiful supply all year round. As managing directors of the local solar technology company Hörmann Solartechnik GmbH, the family were able to plan and launch the installation themselves based on their own specifications. The 20 kW photovoltaic system, which uses modules from Hanwha Q CELLS, is expected to produce around 20,000 kWh of solar power per year.

The heart of this solution for self-sufficiency is a Picea energy center from HPS Home Power Solutions, a compact cabinet containing batteries, power electronics, ventilation equipment, an electrolyzer, a fuel cell and an energy management system. On bright summer days, the Picea system stores any unneeded solar energy in a battery to ensure the inhabitants have plenty of power through the night. And surplus solar energy is also converted into hydrogen via electrolysis and stored long-term for use during the colder months. The heat released by this process is used for indoor heating. In winter, the fuel cell springs into action to ensure enough electricity and heat is provided.
The Hörmanns’ house isn’t the first to use this innovative energy system. A number of Picea field tests funded by the Federal Ministry of Transport and Digital Infrastructure are taking place across Germany. WeberHaus, a prefabricated house specialist, is also running a pilot project at a young family’s home in the Sauerland region. (SP)

For more information, please visit the website of HPS Home Power Solutions