Germany – Apartment buildings

with GREENROCK saltwater batteries

Recently we were invited to the inauguration of two apartment buildings in Germany. A great project that we would like to introduce to you. Several families are moving into the new flats with a total living space of 750 m². The houses are supplied with solar power from PV surfaces on the roof and the façade. A GREENROCK saltwater storage supplies the flats with sun power during the night.

Häuser Solms

Solms Mehrfamilienhäuser

Apartment buildings – The project in detail:

Both houses are of timber frame construction with untreated solid wood ceilings. The walls consist of main support, installation level and soft fibre board and cellulose insulation.

A 16 kW heat pump with a 500 litre buffer storage tank supplies underfloor heating and cooling. Controlled ventilation with recovery ensures a good indoor climate and a positive energy balance. 75 kWpeak photovoltaic modules supply the homes with solar power. The modules are mounted on the roof, on the balcony and on the facade.

A 30 kWh GREENROCK saltwater power storage optimises self-consumption and supplies the flats with solar power even at night.

vor dem Speicher

At the opening in the apartment building: from left to right: Michael Metz as GREENROCK partner, Mrs. Hirn and Dr. Justus Brans (both from the Hessian Ministry of Economics)

Why a GREENROCK salt water power storage

For Michael Metz, his focus is on ecological building. All components, from masonry to energy supply, should interlink in an environmentally friendly and energy-saving manner. Good building insulation pays for this just as much as the supply of solar energy. “In my building project I was looking for an environmentally friendly and sustainable battery technology. In the process I came across the GREENROCK saltwater batteries. The technology convinced me immediately”. So Michael Metz. His next construction project is already in the planning stage. It is a residential building with 14 flats.

During the construction phase

Bauphase Solms

In September 2019, TV station ARD Hessen reported on the forward-looking project.