Outdoor energy storage

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Large-scale outdoor storage: Powering the future

In Switzerland, the expansion of renewable energy—accelerated by the framework legislation—is a key step in the energy transition. However, energy production from natural sources fluctuates depending on the time of day and season—a situation further exacerbated in winter by the winter power shortage. Domestic demand in industry and commerce is also not always consistent. While industry may require a continuous energy supply under certain circumstances, commercial businesses consume the majority of their electricity during the day, specifically during business hours. Therefore, installing a scalableoutdoor energy storage system is particularly worthwhile in areas with high energy demand, such as at EV charging stations or at substations with high utilization rates.

In this regard, large-scale battery storage systems using lithium iron phosphate (LFP) batteries are a forward-looking choice, as the electrical energy does not need to be converted into another form of energy with significant losses, as is the case with pumped-storage power plants or compressed air storage systems. Furthermore, this space- and resource-efficient storage option can be used flexibly for applications ranging from residential use to large-scale industry. Unlike storage technologies using capacitors or superconducting coils, this solution offers a flexible storage duration ranging from days to weeks with higher power capacity. The systems are also scalable at any time in terms of charging capacity.

Ourbattery storage systems, with capacities starting at 500 kW, store large amounts of energy from solar or wind power for your own use. Given the high energy prices in Switzerland and the comparatively low profit margins from providing balancing power, an outdoor battery storage system from 42technology does more than just enable a self-sufficient power supply. Using it to optimize self-consumption, power charging stations for electric vehicles, and more is also a profitable business decision for your company. With the help of smart systems and a customized, user-friendly interface, we help you get the most out of your photovoltaic or wind power system.

Why investing in energy storage systems is a good idea right now

In 2025, the market for large-scale battery storage saw record growth—in Germany alone, several of the largest storage power plants to date were connected to the grid, and in Switzerland, too, the pipeline of newly installed large-scale storage projects is growing significantly. At the same time, prices for lithium iron phosphate cells have continued to fall. Added to this is regulatory tailwind: the gradual implementation of the framework legislation and new market instruments from the EU electricity market reform will take full effect starting in 2026. The cost-effectiveness and availability of large-scale outdoor storage systems are thus more attractive than ever before for Swiss commerce and industry.

How is electricity storage used in outdoor applications?

With a BESS outdoor power storage unit, you have a scalable charging capacity that opens up diverse application possibilities:

Intelligent large outdoor storage with EMS

An outdoor large-scale energy storage system is only as good as its energy management system (EMS). In collaboration with partners, we offer our customers an AI-based EMS platform that goes beyond standard battery optimization. The latest generation of the algorithm offers enormous potential for energy storage in industrial and commercial applications, as well as for grid providers. Optimized charging and dynamic peak load optimization are just as simple and automated via the intuitive interface as electricity-price-based charging and discharging (arbitrage) and the integration of a wide variety of control variables—such as loads from charging stations and the optimization of mixed energy sources.

With 42technology energy storage systems, you also benefit from the highest safety standards, uncomplicated maintenance and flexible storage sizes. Find out here in detail how our outdoor power storage systems optimize your operations.

Reliable power storage with emergency power function

Ensuring a reliable power supply is crucial, especially for businesses. In times of power outages or unforeseen power shortages, a reliable emergency power storage system is invaluable. This makes it possible to maintain operations at all times.

The need for battery storage in such situations is becoming increasingly apparent, especially given the increasing vulnerability to extreme weather events and dependence on electrical appliances. These power storage devices are capable of storing excess energy during periods of low demand and releasing it when needed to ensure a continuous flow of electricity.

One of the reasons why large-scale battery storage systems with emergency power capabilities are so important is their flexibility and adaptability. These systems can be used in businesses for a variety of purposes or can even ensure a continuous power supply during emergencies such as natural disasters. We and our partners are constantly refining the technology behind these storage systems so that we can offer even more reliable energy supply solutions today and in the future.

The use of lithium iron phosphate (LFP) batteries in our CATL-EnerOne battery marks another milestone in safety. Unlike lithium-ion cells, LFP batteries are known for being extremely stable and highly resistant to ignition, making them a safe choice for use in energy storage systems. The LFP chemistry and safety circuits within the battery cells minimize the risk of thermal runaway at the cell level. This is complemented by a multi-stage fire protection concept at the container level: smoke and heat sensors detect incidents early, and an integrated aerosol suppression system suppresses the reaction at the cell level without causing secondary damage from extinguishing water. A physical separation of the battery and inverter areas within the container further limits potential damage to the affected compartment. This keeps the storage systems protected from fires. Safe long-term use is thus ensured, and your investment is well protected.

Further storage sizes and capacities on request.

Technical features

The technical features of our outdoor power storage units for industry, commerce and grid operators at a glance:

42technology: Your partner for efficient power storage systems

We are a team of experienced experts for sustainable and smart energy systems in Switzerland. With our energy solutions, we support companies of all sizes in optimizing their energy use. We also provide private users with home energy storage systems at short delivery times and with the best advice.

As a service provider, we support you from the very beginning of your project. We start with the planning and project engineering of the energy storage systems and are available to our customers with our many years of experience in the selection of suitable components. Subsequently, we deliver the modular outdoor energy storage systems or other desired charging and storage components. On site, we will gladly take care of system integration, installation and commissioning for you. Do you have any questions about our battery storage systems or other products and services?

Submit a no-obligation inquiry today for your custom large-scale battery storage system! We’d be happy to advise you on the right power output and capacity (starting at 500 kW / 500 kWh), as well as on energy efficiency through renewable energy and energy storage.