Luminus’ Path to Smarter Test Automation

Luminus set out to speed up software delivery while improving quality. By adopting an AI-powered low-code test automation tool and applying a shift-left strategy, the team reduced manual testing by 70%, improved test coverage, and achieved a 460% ROI in their pilot project. The success of this initiative laid the foundation for scaling test automation across the company—without relying on external consultants.

Who is Luminus

Luminus is leading the energy transition in Belgium. It is active in electricity production, energy supply, and flexible energy solutions for residential and business customers. With a market share of 23%, Luminus helps its customers electrify and reduce both CO₂ emissions and energy consumption.

At Luminus, we are committed to providing high-quality applications and processes to our internal and external stakeholders. To deliver on this promise, we designed a testing framework to improve software quality, testability, and time to market through an AI-driven low-code automation solution.

The Problem Statement

Luminus introduced a shift-left strategy focused on delivering faster feedback for applications closer to the source code. A strategic project was launched to modernise backend pricing and offering systems, aiming to create a smooth and fast end-to-end process.

The main challenge was ensuring on-time delivery of processes and applications while maintaining high software quality in a complex environment.

Solution Approach

To meet both objectives, implementing the shift-left strategy and delivering a high-quality project on time, Luminus adopted an AI-powered low-code test automation tool.

The testing team quickly ramped up the right automation tests across different applications, enabling faster, high-quality feedback for development teams. Thanks to advanced AI capabilities, the test coverage increased significantly: 80% of stable tests (API and UI combined) could run in parallel across multiple environments.

Manual testing efforts dropped by 70%, allowing the team to focus on development and other critical tasks. The pilot project delivered an ROI of 460%, mainly due to reduced manual testing time, faster deployment cycles, and fewer incidents during production releases.

Key lessons from the pilot:

• Start automation early
• Monitor test coverage continuously
• Maintain regular feedback loops with development teams

Conclusion

The drive to deliver fast feedback in fast-paced teams while maintaining high application quality was approached with a practical mindset. With a clear vision, the team designed an effective test strategy and selected a focused pilot project.

We took one step at a time while staying aligned with our end goal. By sharing progress and outcomes regularly across teams, we ensured smoother adoption and broader visibility of the benefits.

The successful pilot reduced manual testing by 70% and enabled us to scale the solution across Luminus without external consultancy.

This project proved that with clarity and consistent effort, we can achieve major gains in both efficiency and quality.

Let’s keep building on this success to drive further innovation at Luminus.

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