Reference project

The ‘Hotel zur Post’ in Steimbke

The ‘Hotel zur Post’ in Steimbke is a small, cozy private hotel with a total of 14 rooms. Since June 2014, Sven Meier has been running it in a family atmosphere and with great attention to detail.

Profile of the ‘Hotel zur Post’

  • Location: Steimbke, Lower Saxony
  • Operator: Sven Meier
  • Industry: Hospitality and hotels

Advantages for the 'Hotel zu Post'

Self-sufficiency increased to 47%
Access to self-generated energy around the clock.
Reduction of operating costs
Thanks to self-consumption optimization and integration of a CHP unit
Positive perception
Hotel guests use exclusively green electricity
24t of CO2 saved over 20 years
In addition, the 2nd Life batteries do not require any further resources

Implemented use case

The ‘Hotel zur Post’ achieved unbeatable advantages thanks to the use of our commercial storage system. By optimizing self consumption, the self-produced solar power can now be stored on site, making the hotel independent of expensive grid electricity. This enabled the ‘Hotel zur Post’ to switch to a sustainable and cost-efficient energy supply.

Self-consumption optimization
Independent and sustainable

Aim of the project

To save heating costs, a gas-powered combined heat and power unit (CHP) runs in the hotel. Until now, Sven had to feed the surplus CHP electricity into the grid at a low price and buy it back later at a higher price. For this reason, Sven has installed a PV system in combination with a Voltfang battery storage system, which enables him to use more of the electricity he produces himself for his guests.

Our customized solution

The battery storage system for the Hotel zur Post has been expanded over the years due to excellent results. Sven Maier now stores up to 90 kWh and has 50 kW of power thanks to an indoor version of the Voltfang 2.

Our commercial storage solution

Capacity up to

90 kWh

Power up to

50 kW

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.

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

Stuttgart Airport

Stuttgart Airport relies on green battery storage systems from Voltfang to save CO₂, cap peak loads, and ensure a sustainable energy supply.
540 kWh Installed storage capacity
Net Zero by 2040 Airport’s goal
10× expansion planned auf 5,4 MWh Speicherkapazität
Mehr Informationen

PV and charging park

Our partner Bidirex has implemented an energy concept for a supermarket. PV system and Voltfang battery storage system ensure a sustainable power supply.
400 kWp Photovoltaic system
360 kWh Battery storage in a 20-foot container
22 charging points for electric vehicles, 84 parking spaces
Mehr Informationen

Apartment building

A modernized apartment building from the 1960s relies on a solar system and Voltfang battery storage for contemporary, self-sufficient living.
21.5 kWp PV system
KfW 40 EE Residential construction
100% self-sufficient Additional feed-in to the grid
Mehr Informationen

Bosselbacher Hof

The Bosselbacher yard represents a flagship project for sustainability and energy self-sufficiency, making your farm holiday even more eco-friendly.
100% Autarky
No grid connection needed on summer days
66 kWh Usable capacity
Mehr Informationen

McDonald’s

The switch to green energy at the McDonald's branch in Pombal, Portugal, underlines the increased commitment of large companies to a sustainable energy supply.
Pioneer Green energy supply
Peak shaving Use case
Since 2020: 100% green energy used from hydropower
Mehr Informationen

Grunwald Farm

The Grunwald farm is located in the Eifel region and has a high demand for electricity, especially in the early hours of the morning.
Autarky Increase
Self-consumption optimization Use case
CO2 savings No new resources used
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.