SECOND-LIFE ENERGY
STORAGE SYSTEM
FOR SONNENHAUS 2.0

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Second-life energy storage systems (ESS) represent an important milestone in sustainable energy supply. They utilize refurbished or repurposed batteries to offer a cost-effective and environmentally friendly storage solution, which is becoming increasingly significant for both private households and commercial applications. These systems are crucial for bridging the gap between energy generation and consumption, significantly contributing to the stability and efficiency of the power grid.

The future of the home with a sustainable PV and battery storage combination

The energy storage system was designed in collaboration with ZM3 for Horst Zimmermann in Göfis, Vorarlberg, and integrated into a private building known as "Sonnenhaus 2.0." Here, a battery storage system is used in combination with a photovoltaic (PV) system to optimize the self-consumption of solar power. The key to the efficiency of this project lies in storing the excess energy produced by the PV system. The installed standalone battery storage system, with a capacity of 260 kWh and a power output of 67.5 kW, allows the homeowner to achieve greater independence from external energy sources while maximizing the use of renewable energy.

Project details:

→ Storage capacity: 261 kWh (208 kWh usable)

→ Expansion: Expandable as needed

→ Battery provider: Mercedes Benz

→ Location: Göfis, Austria

→ Monitoring: Cell voltage, cell temperature, current, and passive balancing

→ Purpose: Self-consumption optimization through storage of excess energy from PV

→ Autonomy level: ~1 day
Furthermore, this project is an excellent example of how innovative energy solutions can contribute to optimizing energy efficiency and reducing operating costs. It impressively demonstrates the benefits of second-life energy storage systems (ESS) in a commercial setting and underscores the importance of sustainable energy sources in modern industry.

All-in-one system

The container is equipped with the individual modules on site at e.battery systems. The container is delivered fully equipped with battery modules. On-site in Sennwald, the electricity storage system is positioned and electrically installed.

The system is based on a 67.5 kW inverter. Additional power can be added by expanding the system with additional modules and containers.

The storage of the future

Energy storage or better known as Energy Storage Systems are the future of efficient energy storage and energy supply. Basically, the system is simple and quickly explained. Energy can be stored via the power grid or through alternative power sources such as electricity from photovoltaics to be used again as needed.

But why do we want to store energy? We can generate grid-independent power supply through energy storage and thus also fall back on this energy in the event of an outage. In addition, we can optimize our own energy consumption through so-called peak load capping.

The complete control and verification of energy consumption, energy sources and energy storage system simply works through our energy management system.
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