Intelligent backend solution for e-mobility

Future topic electromobility meets IoT: With the help of com2m’s IoT cloud expertise, compleo (formerly wallbe) is receiving a modern e-mobility backend solution that enables the full potential of charging infrastructure solutions in the first place.

About Compleo

Based in Dortmund Compleo is making a significant contribution to progress in the field of electromobility with its modern charging solutions. The specialists from electrical engineering and IT develop holistic and practical solutions that combine all aspects of modern charging – and consistently rely on IoT cloud technologies in cooperation with com2m.

Compleo therefore not only offers pure hardware, its operation and maintenance, but also sees itsels as a full-service provider for e-mobility solutions. An essential component here are the digital services, which are realized by a consistent networking of the charging solutions with the e-mobility backened. It allows integration into roaming networks, authentication via RFID tokens or convenient control via app, and also e.g. relevant services in the context of billing as a private or corporate customer.

In addition, the provision of digital services creates a new business model for Compleo. In many situations, the e-mobility backend is not only a necessity for Compleo in order to meet the requirements of customers and to be able to participate in tenders but has also established itself as a further pillar for the generation of continuous, partly usage-dependent revenues.

Highlights of the project

Extensive cloud Integration

All relevant processes are handled via the cloud and maped centrally via the portal, from authorization and billing of charging processes, integration of roaming (e.g. Hubject and PlugSurfing) to barrier-free payment.

Ad-hoc charging & direct payment

Consumers are given the option of using the charging stations without a customer contract and then paying for ther consumption directly at the charging stations using a giro or credit card (including receipt issuance in compliance with calibration law)

Compliance with calibration regulations

Compliance with calibration laws plays a central role in e-mobility. The cloud provides support with additional services such as the retrieval of digital receipts and the provision of information about a charging process signed by the charging station.


  • Monitoring and management of charging stations via a cloud backend
  • Provision of the platform and associated services for charging station operators
  • Handling of all relevant processes via the cloud (authorization, billing, integration of roaming, barrier-free payment, receipt portal, etc.)
  • Services for different user groups (from energy suppliers to employers and private users)
  • Ensuring data protection and compliance with calibration law


  • Multi-client capable platform incl. white-label function
  • Comprehensive user and rights concept for multi-level users
  • Connection of platforms such as PlugSurfing and Hubject
  • Payment and billing solutions
  • Control via apps


  • Scalable microservice architecture
  • Implementation of the target architecture on Microsoft Azure
  • OCPP protocol for the standardized connection of charging stations
  • Individual services (e.B. PayPal integration)
  • Modern web technologies for frontends
com2m wallbe Backend

Our Services

  • Joint conception of the overall solution (technical and professional)
  • Agile implementation of development
  • Operation and further development of the IoT cloud solution, incl. UI / UX, frontends and cloud backend and ongoing expansion of the application
  • Operation and further development of the entire IoT solution

This topic might also interest you

The Digitilization of the Energy Industry via IoT

Digitization is spreading further and further afield – and is also reaching the energy industry: Decentralization, sector coupling and changing requirements call for new solutions and digital approaches.

Interested in this topic? Get in touch with us.

Profilbild Marco Oesterlein

Marco Oesterlein is Business Developer and your contact for IoT solutions for e-mobility.