Now with the new Batteryflat

Voltfang 2 &
Voltfang 2 Indoor

Commercial Storage – Green, High-Performance & Versatile

Capacity starting from

45 kWh

Power starting from

50 kW

Who can benefit from a commercial energy storage system?

A commercial storage system is ideal for companies that want to reduce their energy costs in the long term and operate sustainably. Businesses with high energy requirements—such as manufacturing companies in all industries, logistics sites, large office complexes, charging parks, and agriculture—benefit particularly from this. With a battery storage system, these companies can save on electricity costs, reduce their dependence on external suppliers, and also significantly reduce their carbon footprint.

For effective use with a PV system, this should deliver at least 0.8 kWp per 1,000 kWh of annual consumption in order to provide sufficient surpluses for storage.

However, the commercial storage system also makes sense without a PV system: it can be used to optimize the use of dynamic electricity tariffs, to cap peak loads and to expand the grid connection. This reduces electricity costs, minimizes grid loads and enables the further electrification of companies and production facilities without extensive infrastructure interventions.

Commercial storage systems thus offer companies the necessary flexibility and cost efficiency and promote a sustainable energy supply in their operations.

Our sustainable battery storage solutions give EV batteries a second life and optimize energy efficiency for industry and commerce.

Optimized
energy consumption
Thanks to an innovative energy management system
Future-proof
investment
10-year warranty & unlimited charging – with the Voltfang Batteryflat.
independent
supply security
Preventive testing & active monitoring at cell level
Measurable
CO₂ reduction
Through sustainable battery storage - made in Germany

Robust, flexible standardized

The Voltfang 2 from the outdoor segment comes as a complete solution with all key components. Quick and easy to install, it can withstand extreme conditions from -20 to +50 °C.

Our modular system uses high-quality, requalified electric car batteries and enables quick and easy installation thanks to standardized plug-in units.

Maximum security: Our 24/7 service monitors and maintains your system at cell level.

Seamless integration of a wide range of applications into the Voltfang energy management system (EMS) – for maximum efficiency through optimal storage utilization, with and without PV systems.

Thanks to our 10-year warranty with no limit on charging cycles, your system’s storage capacity is preserved in the long term – if needed, we’ll replace battery modules quickly and easily.

Manage the energy of tomorrow

With Voltfang’s energy management system, you always have your energy flows under control, optimize your CO₂ savings, and increase your efficiency in real time. Get started now and experience how easy energy management can be!

Voltfang 2

Voltfang 2 Indoor

All important data
at a glance

Our technical data sheet contains detailed information on our commercial storage system to help you make your decision. However, if you have any specific questions or require further information, please do not hesitate to contact us.

Voltfang 2
Components
The Voltfang 2 is a comprehensive and turnkey solution that offers everything in one. With an integrated inverter and energy management system, it can be installed flexibly at different locations.
Capacity
from 90 kWh
Performance
from 92/184 kW
Grid connection
3-Phase
Linkage
AC coupled
Casing dimensions (HxWxD)
1 Rack: 800 / 2100 / 1535 mm
2 Racks: 1600 / 2100 / 1535 mm
Protection classification
IP 55
Ambient temperature
-20 to +50 °C
Warranty
System & capacity: 5 years; extendable to 10 years and unlimited cycles with the Batteryflat.
Guidelines & Certificates
CE, UN 38.3, VDE AR N 4105/4110
Recycling
Recycling/reuse is accepted free of charge
Voltfang 2 Indoor
Components
The Voltfang 2 Indoor is a complete system consisting of battery modules, a suitable inverter and the Voltfang Energy Management System (EMS)
Capacity
45 kWh
Performance
50 kW
Grid connection
3-Phase
Linkage
AC coupled
Casing dimensions (HxWxD)
800 / 2100 / 800 mm
Protection classification
IP 55
Ambient temperature
-5 to 40 °C
Warranty
System & capacity 5 years; with Batteryflat 10 years
Guidelines & Certificates
CE, UN 38.3
Recycling
Recycling/reuse is accepted free of charge

Practical case studies: Voltfang in action

Discover in our practical case studies how companies from industry, retail, and logistics are successfully using Voltfang battery storage systems. Learn more – from detailed load profile analyses and impressive cost savings to the innovative technologies behind them.

Frequently Asked Questions

A commercial storage unit is an electricity storage unit for small and medium-sized businesses. It stores surplus solar power from a PV system, for example, and makes it available when needed. This enables commercial enterprises to increase their own consumption, reduce energy costs, and at the same time reduce the load on the grid through intelligent control. Commercial storage units usually have a capacity of at least 30 kWh.

A commercial energy storage system makes your business more independent and sustainably reduces energy costs. With our intelligent energy management system, your consumption is optimized, positively impacting your bottom line and sustainability goals.

A commercial storage system is suitable for various applications that help companies reduce energy costs and optimize their energy supply. Typical areas of application include optimizing self-consumption, peak load capping, optimized use of dynamic electricity tariffs, and virtual grid connection expansion.

An intelligent energy management system (EMS) automatically optimizes the charging and discharging processes of a commercial storage unit. The EMS analyzes consumption data, weather forecasts, and electricity prices in order to use the storage unit as efficiently as possible. It decides when to charge or discharge the storage unit or when to feed electricity into the grid in order to achieve the greatest possible cost savings.

Our system stores cheaper electricity when tariffs are low and releases it as needed. The intelligent energy management adapts to market prices, maximizing cost efficiency and providing flexible energy use for your business. More information can be found here:
dynamic electricity tariffs and commercial energy storage.

No, our storage system also works without a PV system, for example, to utilize dynamic electricity tariffs or as a charging infrastructure for electric vehicles. This way, you stay flexible, regardless of your existing infrastructure.

The optimal size of the storage system depends on your individual electricity consumption profile, peak loads, and any existing or planned PV system. A professional economic analysis by Voltfang calculates the required capacity and performance as well as the payback period.

Yes, the Voltfang 2 is specifically optimized for outdoor use. It is weatherproof and robust, making it ideal for various environments and conditions.

Our storage system uses powerful, safe, reused electric car batteries. These second-life batteries come from well-known German OEMs and were originally used in electric vehicles or come from overproduction. The technology offers maximum safety and durability and is ideal for a reliable energy supply. Compared to new batteries, up to 1 ton of CO₂, 3 MWh of energy, and 50 kg of resources can be saved per 10 kWh, maximizing efficiency and promoting resource conservation.

The payback period for a commercial storage system can vary greatly, but is often between 3 and 7 years. It is influenced by several factors, including the acquisition costs, the amount of electricity costs saved (through self-consumption, peak load capping, and trading), possible subsidies, and the use of different business models (so-called multi-use approaches).

The service life of a commercial storage system depends on the technology and type of use. Modern battery storage systems from Voltfang are designed for many thousands of charging cycles and can achieve a service life of up to 20 years or more.

Our suitable reference projects

Our commercial storage system has already been successfully implemented in numerous different projects and adapted for every application. Here you will find an excerpt of the projects.

Energy Efficiency for Various Applications

We cover a wide range of applications with the modular design of our commercial storage systems. Whether peak load capping, self-consumption optimization, multi-use functions, making the right use of dynamic electricity prices or emergency power operation – our commercial storage systems offer a wide range of options that can be tailored precisely to the needs of your company. We work with you to develop the optimum solution for your individual requirements and ensure a cost-efficient, sustainable energy supply that can be flexibly adapted.

Charging station infrastructure
Power to the point
Dynamic electricity prices for companies
Always save optimally
Intraday Trading
Every hour counts
Multi-Use Battery Storage
In diversity lies strength
Time of use
Get the most out of it at all times
Self-consumption optimization
Independent and sustainable

Read now

Our Impact Report 2024

In 2024, we moved more than just technology — we created real impact.

Our new Impact Report shows how our battery storage systems reduce CO₂ emissions, strengthen partnerships, and shape the future.
Uncover the real story behind the numbers.

What We Stand For

We stand for the development of a European value chain and sustainable economic growth, because an effective circular economy is crucially important. At Voltfang, we help reduce the import of rare and critical raw materials by using reconditioned and new batteries, for example from overproduction in the automotive industry, rather than new materials.

If you need more capacity

Available
Now!

Large-scale battery storage

Whether for grid stability, energy trading, or as part of a sustainable power supply – Voltfang large-scale battery storage systems offer a reliable and scalable solution for modern energy systems.

Capacity starting from

3,2 MWh

Power starting from

1,2 MW

10 Years Guarantee

Optimize your energy

Arrange a free consultation now

Starting a green future together as partners

As an electrician, solar engineer, project developer or planning office for renewable energies, you can help us meet the growing market demand and shape a climate-neutral future. Become our partner!

Starting now, you’ll receive a 10-year warranty with the Batteryflat – for the Voltfang 2 and Voltfang 2 Indoor, with no limit on charging cycles*.

This means for you:
✔️ Maximum
flexibility in application
✔️ Full planning reliability
✔️ Whether self-consumption, peak shaving, time-of-use, or trading
– you get full performance from your storage system, completely without a cycle limit.

Applies immediately to new orders with Batteryflat.