Reference project

Tenant electricity in residential property

An apartment building from the 1960s becomes a showcase example of sustainable living. With a 21.5 kWp solar system, heat pump and Voltfang battery storage, it demonstrates how contemporary, self-sufficient and energy-efficient living can be designed.

Profile
Apartment building

  • Location: Lippstadt, North Rhine-Westphalia
  • Owner: Viessmann civil engineer Jan W.
  • Real estate/residential construction with KfW 40 EE

“This house gives all residents the opportunity to benefit from the local energy transition.” – Jan Wollesen

Advantages for the apartment building

Use of green energy
Battery storage optimizes energy management for renewable energy systems
Cost reduction for residents
The electricity produced by PV can be used independently and efficiently.
Grid feed-in in case of surplus
Promotion of decentralized renewable energy sources
Environmentally conscious living: 30 tons of CO2 savings
2nd Life batteries will conserve resources over the next 20 years

Implemented use cases

In this modernized property, self-consumption was optimized to increase energy efficiency. Our advanced energy management system ensured that the electricity generated by a 21.5 kWp photovoltaic system was used efficiently for the tenants’ own needs. This way, energy costs were reduced and a significant contribution was made to sustainability.

Self-consumption optimization
Independent and sustainable
Dynamic electricity prices
Always save optimally
Multi-use
In diversity lies strength

Aim of the project

In cooperation with our partner solarize, Voltfang is implementing a tenant electricity model that supplies the energy-efficient residential building, including the heat pump, with green electricity. The existing house grid connection is supported by a virtual totalizer.

Our customized solution

The battery storage system was delivered with a net capacity of 58 kWh and an output of 30 kW. The battery storage system is equipped with suitable inverters to ensure efficient electricity conversion.

Our energy storage solution

Capacity

58 kWh

Power

30 kW

The apartment building in Lippstadt, which is being completely renovated, sets a pioneering standard for future residential projects with its sustainable energy concept.

Additional reference projects

Below, we present additional reference projects where a Voltfang battery storage system has been implemented. These projects can encompass a variety of applications and industries, including hospitality, agriculture, bakeries, and supermarkets.

Frenger Ladepark

Der Frenger Ladepark in Köln nutzt eine PV-Anlage und einen 360 kWh Batteriespeicher, um Schnellladen ab 0,30 €/kWh anzubieten – nachhaltig und profitabel.
2 HPC-Lader (300 kW) Schnellladeinfrastruktur
22 kW AC-Lader Zusätzliche Ladepunkte
360 kWh Speicher Energie für günstiges Laden
Mehr Informationen

Logistikzentrum Teveo

Teveo betreibt in Ansbach ein vollautomatisiertes Logistikzentrum mit PV-Anlage, 750 kWh Batteriespeicher und 16 Ladepunkten – effizient, nachhaltig und zukunftssicher.
749 kWp PV-Anlage
16 Ladepunkte
20.000 m² Fläche
Mehr Informationen

Elementary school in Nuremberg

The city of Nuremberg is implementing a showcase project with the Viatis School: battery storage, PV system and heat pump provide green energy and reduce CO₂ in the education sector.
90 kWh Battery storage systems
3000 m² school area Energy-efficient supply
100 kW Heat pump
Mehr Informationen

Sedo Treepoint Textile Industry

Sedo Treepoint from Hesse supplies production and 16 e-vehicles with its own solar energy - independently, sustainably and cost-effectively thanks to 174 kWh of battery storage.
100 % Self-sufficiency
16 Electric vehicles
174 kWh Capacity
Mehr Informationen

Autenrieth Plastics Technology

Plastics technology expert Autenrieth relies on Voltfang storage systems to reduce energy costs, cut peak loads and produce in a climate-friendly way.
Peak load reduction From 230 kW to 105 kW
180 kWh Battery storage systems
CO₂ reduction Sustainable energy solution
Mehr Informationen

JET Hamburg – HPC fast loader

JET in Hamburg uses a 300 kW HPC fast charging station with Voltfang battery storage - ultra-fast charging without grid expansion, climate-friendly and economical.
2 charging points Charging infrastructure
300 kW charging capacity Fast charging capacity
80 kW grid connection Existing network capacity
Mehr Informationen

Packaging industry Kemapack

Kemapack GmbH uses a PV system and a Voltfang second-life storage system to efficiently supply packaging machines and charging points with green electricity. This reduces energy costs and increases independence from the grid.
90 kWh installed Storage capacity
45 kW available Performance
Charging infrastructure Supply of employees & fleet introduced
Mehr Informationen

Mechanical engineering Myrenne

The medium-sized company Myrenne GmbH offers complete solutions in mechanical engineering from its base in the Eifel region. The production company has a 268 kWp PV system and has been scaling its battery storage capacity ever since.
Roetgen, North Rhine-Westphalia Location
System supplemented by 336 kWh in 2024 Extension
EVO & LSK Use cases
Mehr Informationen

Steel trade Kerschgens

Kerschgens from Stolberg, a leading steel trading company, uses the Voltfang storage system to reduce peak loads and sustainably lower CO₂ emissions.
1.3 MWh Installed storage capacity
Peak load: -37.5% Reduced from 400 kW to 250 kW
Charging for electric vehicles Implemented on-site
Mehr Informationen

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How our approach works

Contact request & consulting
After completing the form, you'll receive not only further information but also the identification of a suitable battery storage system in a personal initial consultation.
Contact request & consulting
After completing the form, you'll receive not only further information but also the identification of a suitable battery storage system in a personal initial consultation.
Offer & reservation:
After consultation, our sales department will prepare a detailed offer. When the order is confirmed, we reserve the battery storage system and set a rough delivery month.
Offer & reservation:
After consultation, our sales department will prepare a detailed offer. When the order is confirmed, we reserve the battery storage system and set a rough delivery month.
Assembly & commissioning:
A specialist company installs the battery storage system, Voltfang employees put it into operation, seamless integration for optimum operation.
Assembly & commissioning:
A specialist company installs the battery storage system, Voltfang employees put it into operation, seamless integration for optimum operation.
Monitoring & support
The battery storage system is registered in the market master data register. In addition, the storage system is constantly monitored to ensure smooth operation.
Monitoring & support
The battery storage system is registered in the market master data register. In addition, the storage system is constantly monitored to ensure smooth operation.
Aftercare & service:
Voltfang provides continuous support after installation. Our team is always available for questions and support to guarantee optimum system functions.
Aftercare & service:
Voltfang provides continuous support after installation. Our team is always available for questions and support to guarantee optimum system functions.