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A Partner for Your Storage Investment

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“The growing demand for electricity storage systems, combined with falling technology costs, makes it very attractive right now to invest in the expansion of battery storage systems.”

Oliver Sauer · Partner, Palladio Partners

Multiple Sources of Revenue

Balancing power and electricity trading, combined and prioritized by revenue.

Systemically Important

Storage systems support the grid and the power supply.

Tangible Value with Impact

A direct contribution to the integration of renewable energy.

Revenue Models

How a Large-Scale Storage Facility Generates Revenue

Regulating Power

FCR · aFRR

  • Stabilizes the grid frequency
  • Remuneration even for reserve capacity

Electricity Trading

Day-Ahead · Intraday

  • Charging When Electricity Prices Are Low
  • Discharge when electricity prices are high

Voltage-Catching Approach

Combination

With the Voltfang EMS

  • Regulating Power and Electricity Trading in a Single Storage Facility
  • Continuously prioritized based on yield
  • Custom profitability analysis for each project

Example: The storage facility in Alsdorf combines balancing power with day-ahead and intraday trading.

View the Alsdorf reference

Investment Partners

Implemented with strong partners

Institutional Capital Partner

Palladio Partners

Starting in September 2025: up to €250 million through 2029 for large-scale battery storage systems with a capacity of several hundred MW. Voltfang plans, implements, and operates these systems.

To the Press Release

Partner for Individual Investors

Mangold Energy

Opens large-scale storage facilities to retail investors. Voltfang serves as the system integrator and technical operator.

To the Press Release

Flexible in Scope

You invest in operational energy storage projects. We’ll work with you to tailor the right structure to your needs.

Single storage unit

A component of a project, such as a battery cabinet or container.

Entire Project

A complete, operational large-scale energy storage project.

Equity Partnership

Long-term, across multiple projects, such as with Palladio Partners.

Frequently Asked Questions About Investing in Large-Scale Battery Storage

Across multiple markets: balancing power (FCR and aFRR) to stabilize the grid frequency, as well as trading on the day-ahead and intraday markets. Voltfang’s energy management system combines these revenue streams and continuously prioritizes them based on yield. We prepare a separate profitability analysis for each project.

That depends on the location, grid connection, design, and marketing strategy. Voltfang provides a separate profitability analysis for each project, which we present during a personal meeting. We do not provide general return-on-investment estimates.

Voltfang will handle technical operations management under a long-term service agreement (LTSA): 24/7 remote monitoring, preventive and corrective maintenance, and performance reporting. This means that implementation and operation are handled by a single partner.

The key factors are securing the necessary permits and grid connection, establishing a clear contractual framework for implementation, and ensuring reliable operation. Voltfang manages these steps through a full EPC contract and subsequent technical operations management—with fewer points of interface and clearly defined responsibilities.

We agree on technical availability on a project-by-project basis. In the Alsdorf West project, for example, Voltfang guarantees 95% technical availability over ten years.

We invest in operational storage projects—ranging from a single storage unit to an entire project. We tailor the appropriate structure to each individual case.

Yes, through partnership models. In the Alsdorf West project, private investors can purchase individual storage units through Mangold Energy; Voltfang handles integration and technical operations.