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Middleware for processing special billing cases and portal optimisation as well as predictive maintenance for electricity storage units

„IT Sonix is the perfect partner for us in the realisation of our projects. We appreciate the high level of expertise as well as the flexibility and competence to find and implement solutions for our complex requirements quickly and efficiently. With the support of IT Sonix, important projects have been successfully completed and our goals for 2020/2021 have been achieved.“

Dr. Patrick Oesterling | Project Manager

Since 2019, we have been developing a billing service for customer-specific cases in the powercloud billing system for Leipzig-based SENEC GmbH. In February 2020, we also took over the modernisation of the Partner Installateur Portal and added innovative functions. Furthermore, in 2022, we implemented a predictive maintenance system for the maintenance of electricity storage units.

Key areas of cooperation


The aim is to make SENEC's energy-related billing process more efficient - especially with regard to customer-specific special cases. Since 2020, we have also taken over the entire renewal of the interface of the Partner Installateur portal and are adapting it to mobile devices. We have also developed a predictive maintenance system for electricity storage units based on a neural network (ANN). The application uses live data to detect defective devices at an early stage.

Key factors

  • Continuous development
  • Continuous integration
  • Microservices
  • Scrum
  • Mobile first
  • User experience design
  • Webfrontend
  • Artificial neuronal networks (ANN)/Machine Learning/Deep Learning
  • Feature and regression analyses
  • ETL Pipelines
  • Pattern recognition
  • Data aggregation


  • Defining the technical requirements of the interface solution for connection to powercloud
  • Inventory of the various billing and contract cases
  • Technical expertise
  • Continuous exchange with SENEC and powercloud
  • Qualified solutions for challenging use cases
  • Infrastructures and pipelines for the high data loads
  • Classification of the real-time data
  • Integration of the software into the actual production operation


The billing service has been in use since June 2020. It successfully processes a large part of all billing cases and maps various special cases and subcontracts. The go-live for the new trade partner portal was in August 2020. It was revised, a design system was created and modernised. The new application provides SENEC with a neural network-based predictive maintenance system that is both innovative and efficient. Integrated into live operation, it easily detects devices that need to be maintained.


After the go-live of both projects, the successful cooperation will be continued. The billing system is to be expanded to process further special cases or future contract types. A continuous improvement of the trade partner portal is intended and extensions with future-oriented functions such as "Cloud to go" and "E-Mobility" are already planned.

About SENEC GmbH

SENEC GmbH, a subsidiary of EnBW, has been developing intelligent electricity storage systems and storage-based energy solutions in Leipzig since 2009. As an all-round energy solution, SENEC.360° offers a coordinated ecosystem for sustainable self-sufficiency, including electricity storage, solar modules, a virtual electricity account and an e-car charging station. The SENEC brand is now one of Europe's leading providers of innovative energy and storage solutions for single-family homes.

More information on SENEC

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Software development, front end development, software process consulting, IT consulting, data science

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Since 07/2019

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Project size

32 developer years

Your contact

Foto der Person
Burkhard Urban
Head of Sales
Would you like to start your own project in collaboration with us or do you have questions about our current references?

Our long-standing Head of Sales always has a clear picture of the situation and will be happy to speak to you.
Phone: +49 162 2574618