Case study · PRAMAC Storage Systems

Complex technology. Fully charged UX

The energy transition is driving intelligent storage systems. Our energy management system is as natural to use as a consumer app.

PRAMAC interface “Current status” with energy flows on a laptop
Client
PRAMAC Storage Systems GmbH
(formerly REFU Storage Systems)
Services
UX/UI design · Architecture
Frontend & backend
Scrum master · Project management
Project period
2022 – 2024
Technologies
React · Golang · MQTT
Modbus · OCPP · SunSpec
Kubernetes · Azure · AWS

More charging power.

Without a new grid connection.

For the electric fleet in Pfullingen, one charging point was to become four, but the grid connection was not enough. The EV-Boost Box replaces new supply lines with storage and an energy management system that caps load peaks and optimises self-consumption.

User experience (UX) & user interface (UI) in focus

Four reasons why the EV-Boost Box is easy to use

Our UX and UI decisions at a glance.

UX · Information architecture The energy transition needs clarity

All energy flows in one picture, details only when they are needed.

  • Real-time energy flow from source to consumer
  • Expert options kept in the background via progressive disclosure
Current status with a detail overlay of the storage systems
UX · Navigation Intelligent guidance in the cockpit

A modular tile system leads straight into photovoltaics, storage and charging points.

  • Custom illustrations as visual anchors for each area
  • One click into each detail view
Analyses as colour-coded tiles with illustrations
UI · Data visualisation From measurement to action

The analysis module brings PV generation, grid consumption and storage use together on one timeline.

  • Colour-coded layers for direct comparison
  • Analyses across different time ranges
Analysis overview with time series for grid consumption, feed-in and PV
UX · Operating concept UX/UI design as a safety anchor

Clear hierarchies make complex control safe and stress-free.

  • Plan charging cycles in a calendar view
  • The storage state of charge (SoC) always in view
Collage of energy flows, energy sources and a charging station tile

A system that conducts energy

PV, grid, storage and charging points in one modular platform.

PhotovoltaicsPV tracker · approx. 6 kWpPower gridGrid connectionEV-Boost BoxStorage · EMSCharging points4 × 22 kW ACCloudMonitoring & services
Insights

The interface in detail

Current status: energy flows, system status and charging points at a glance.

Charging points in detail
Charging points in detail
System status
System status

  • 130kWh

    Battery capacity in a 20-foot container

  • 88kVA

    bidirectional battery inverter

  • 4× 22 kW

    AC charging points without a new grid connection

“Being able to work spontaneously, simply and quickly right in the container helped us immensely – thanks to inovex.”

Ralf Ziegler · Head of Digital Business, PRAMAC Storage Systems