The Belgian energy market underwent a major transformation with the introduction of MIG6, a new market implementation guide designed to modernize data exchange between suppliers and grid operators. This change was supported by a centralized platform operated by Atrias, enabling processes such as digital metering, local production, and demand-side management.
For energy suppliers, this was a fundamental shift requiring a complete redesign of internal systems and processes. The stakes were high: smooth communication with grid operators was essential for accurate billing, customer transfers, and compliance with market regulations.
When the new system went live, the transition was far from seamless. Data inconsistencies and communication errors between market parties led to fallout that disrupted operations. Suppliers faced mounting issues: invoices could not be processed, customer transfers stalled, and operational teams were overwhelmed by exceptions.
For several suppliers, the situation escalated into a significant financial risk, with millions in unbilled amounts accumulating. Immediate action was needed to stabilize operations, reduce fallout, and restore compliance.
Tactical Advisory Group stepped in with a clear mission: bring stability to market processes and ensure compliance with MIG6 standards. Our consultants combined technical expertise, process knowledge, and hands-on execution to deliver results under pressure.
Our involvement began early in the project lifecycle. Acting as test analysts, our consultants designed and executed end-to-end test cases, validated data flows, and coordinated defect resolution across multiple stakeholders. Using Scrum methodology and tools like Jira and Zephyr Scale, we ensured that critical scenarios were covered and defects were tracked transparently.
Following go-live, our consultants joined dedicated hypercare teams to monitor systems, analyze defects, and implement workarounds. Acting as expert users and process analysts, they bridged the gap between operational teams and IT, prioritizing issues and coordinating with grid operators and external partners. Their efforts ensured that urgent cases were resolved quickly and customer impact was minimized.
As fallout persisted, our consultants took on business analysis roles to identify root causes and improve system performance. They extended KPI reporting to provide management with a complete view of operational risks and financial exposure. Through structured coordination and defect handling, the team reduced the unbilled amount by €5.8 million, restoring financial stability.
Operational continuity was regained. Fallout errors were significantly reduced, billing processes resumed, and customer transfers were stabilized. KPI dashboards provided transparency, enabling proactive management decisions.
Beyond immediate stabilization, the project strengthened collaboration between business and IT teams, introduced structured testing practices, and improved data quality across critical systems.
The organization emerged stronger and better prepared for future market evolutions. By embedding robust processes and reporting mechanisms, Tactical Advisory Group helped create a foundation for continuous improvement and compliance in a highly regulated environment.
We do more than solve problems, we create resilience. Our consultants combine deep sector expertise with practical execution, ensuring that complex transitions become opportunities for growth. For organizations navigating regulatory change in Belgium and beyond, Tactical Advisory Group is the partner that delivers clarity and results when it matters most.
