Redox flow battery engineering & technology

Engineering and technology for the next generation of redox flow batteries

NovaFlow develops technologies designed to reduce the cost and resource dependency of redox flow batteries. Today, we support research and industry partners with specialized engineering for cells, stacks, laboratory test systems and complete RFB subsystems.

  • Non flammable aqueous electrolyte
  • 20-year lifespan
  • Reusable active material
Conceptual rendering of a NovaFlow containerised VRFB system
VRFB containerised system · concept
Long-duration storage

01 / 05 What we do

Two complementary tracks

Available now

RFB Engineering Services

Specialized engineering for laboratory test systems, cells, stacks, mechanical design, hydraulics, measurement systems and RFB subsystems.

Available today as a service — we work alongside your team, from individual components through to the full balance of plant around a stack.

Typical work ranges from a single characterized cell or a bespoke test rig to fully integrated subsystems. We deliver documented, ready-to-run hardware built to your specification, so your team can move straight to testing.

In development

PEPS and Advanced RFB Components

NovaFlow is developing a technology platform for lower cost redox flow batteries, centered on decentralized vanadium electrolyte production and recycling.

The proprietary PEPS process is designed to use recycled vanadium materials and a broader range of vanadium containing feedstocks, reducing dependence on high purity raw materials and potentially lowering electrolyte costs by up to 50%.

NovaFlow is also developing corrosion resistant carbon based bipolar plates designed to reduce component costs and simplify industrial stack production.

02 / 05 Engineering services

Available now

Redox Flow Battery Engineering

NovaFlow supports universities, research institutes, technology developers and industrial companies in the design, development and validation of redox flow battery cells, stacks, test systems and subsystems. Our experience is strongest in vanadium redox flow batteries and can be transferred to other RFB chemistries where the underlying engineering principles are comparable.

Specialized Laboratory Test Systems

Design and development of customized laboratory and pilot test systems for RFB cells, stacks, components and electrolyte studies.

  • Requirements definition and test stand architecture
  • Hydraulic circuits, tanks, pumps and piping
  • Sensors, measurement equipment and data acquisition
  • Electrical interfaces and control concepts
  • Safety concept and technical documentation
  • Commissioning support and troubleshooting

Cell and Stack Engineering

Mechanical and electrochemical engineering support from laboratory cells to stack concepts.

  • Cell frames and flow field concepts
  • Sealing and compression concepts
  • Electrode and separator integration
  • Bipolar plate integration
  • Flow distribution and pressure loss assessment
  • Assembly concepts and failure analysis

RFB System Engineering

Development support for complete RFB subsystems, research prototypes and pilot installations.

  • Hydraulic system design
  • Pump and pipe dimensioning
  • Thermal management
  • Sensor and control architecture
  • Tank, stack and balance of plant interfaces
  • Technical risk and feasibility assessment

Testing and Technical Validation

Structured planning and evaluation of RFB development work.

  • Test plans and acceptance criteria
  • Design of experiments
  • Component and material screening
  • Performance and degradation analysis
  • Root cause analysis
  • Technical reporting

Planning an RFB test system, stack or development programme?

Contact NovaFlow to discuss scope, interfaces and technical requirements.

For investors

Building a cost reduction platform for redox flow batteries

NovaFlow is preparing a pre seed financing round to validate its electrolyte production and recycling process, protect the underlying intellectual property and establish the laboratory basis for industrial pilot projects.

03 / 05 Technology in development

A development platform for lower cost and more circular RFB technology

NovaFlow is developing a portfolio of technologies that targets major cost drivers in vanadium redox flow batteries. The current priority is the validation and protection of PEPS and its underlying electrolyte production and recycling process.

Available now
Deliverable today — our engineering services.
In development
Under active development; not yet available.
Validation pending
Concept developed; laboratory validation not yet completed.

PEPS: Portable Electrolyte Production System

Validation pending

PEPS is NovaFlow's development platform for decentralized production and recycling of vanadium electrolyte. The platform is intended to operate at or near the battery project site, reduce transport requirements and allow the use of a broader range of vanadium containing feedstocks.

NovaFlow has developed a production process intended to convert suitable vanadium containing secondary materials and waste streams into battery grade vanadium electrolyte. By reducing dependence on high purity primary raw materials, the process has the potential to reduce electrolyte costs by up to 50%.

Development status: Process concept developed. Laboratory validation and patent filing are pending. Not commercially available.

Public benefits

  • Potential use of suitable vanadium containing waste and secondary raw materials
  • Reduced dependence on high purity primary vanadium feedstocks
  • Potential electrolyte cost reduction of up to 50%
  • Decentralized production closer to the battery project
  • Reduced transport requirements and stronger regional supply chains
  • Future integration of electrolyte recycling and quality control

Development pipeline

  1. Bipolar Plates

    Corrosion resistant, weldable composite bipolar plates for simplified RFB stack assembly.

    Development and validation phase. Not commercially available.

    In development
  2. Separators

    Cost focused separator concepts developed for redox flow battery requirements.

    Research and development phase. Not commercially available.

    In development
  3. Advanced Electrolyte

    Electrolyte formulations aimed at improved stability and energy density.

    Research and development phase. Not commercially available.

    In development

Technology roadmap

  1. Current phase

    Laboratory validation

    Validate the PEPS production and recycling process and selected component concepts.

  2. Planned

    Pilot scale development

    Scale the process, build pilot equipment and validate with industrial partners.

  3. Future phase

    Commercial deployment

    Deploy decentralized electrolyte production and expand the component portfolio.

04 / 05 Why redox flow batteries

Built for long duration stationary energy storage

Redox flow batteries combine non flammable aqueous electrolytes, independent scaling of power and energy, long operational life and the potential for circular electrolyte use. NovaFlow is working on the cost and supply chain barriers that currently limit broader deployment.

Non flammable aqueous electrolyte

Long operational life

Independent scaling of power and energy

Reusable active material

Designed for stationary long duration applications

Traction

Building the company and validating the technology

NovaFlow Energy Systems GmbH is incorporated in Berlin, holds three signed letters of intent (non-binding) with European RFB manufacturers, and has submitted a public funding application.

See our traction and progress

Company

Experienced RFB engineering. Focused industrial execution.

Founded by two engineers with more than ten years in redox flow battery and mechanical engineering. NovaFlow Energy Systems GmbH was incorporated in Berlin in June 2026.

Meet the team

05 / 05 Contact

Let's build the next generation of redox flow battery technology

Contact NovaFlow to discuss an engineering project, technology partnership, pilot opportunity or investment.