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Real-world case studies of composable frontends and self-service portals built with Open Self Service and our MACH-based stack.

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How a composable client portal for Orange Energia became the foundation for Open Self Service

Jan Jagoda
Technical Product Owner @ O2S
Marcin Krasowski
Chief Architect @ O2S

Digital self-service is no longer a "nice to have" in energy and utilities. Customers expect instant access to data, transparent communication, and the ability to take action without waiting for support. For providers, this means one thing: the traditional model of service delivery must evolve into a flexible, digital-first environment.

Orange Energia — one of the most innovative energy providers in Poland — took this challenge seriously. Their goal was clear: build a modern, unified client portal that would simplify customer communication, reduce operational load, and create a scalable foundation for future services. The portal was known as "Moja Orange Energia" and was delivered for Orange Energia - then a company within the Orange Group and now part of the Fortum Group.

The project became one of the first large-scale composable portal implementations in the Polish energy sector. It also played a crucial role in shaping the components and architectural assumptions that later evolved into Open Self Service — our ready-to-deploy, modular frontend for digital self-service.

Orange Energia customer service application screens