Case study · Data Engineering
A German energy utility
Meter and grid data lived in five systems and one heroic Excel file. We consolidated it into a single platform the whole company reports from.
The mess we walked into
Operational data was scattered across five systems of different generations. Monthly reporting meant exporting, reconciling and re-importing by hand — a full-time job with a single point of failure: one Excel file everyone feared to touch.
What we did
- Built automated data pipelines from all five source systems
- One warehouse with clean, reconciled, analytics-ready data
- Self-service dashboards replacing the monthly Excel ritual
- Data quality checks that flag anomalies at ingestion, not in the boardroom
Before / after
Monthly reporting days of manual reconciliation available on demand
Data sources five disconnected systems one governed platform
Single point of failure one heroic Excel file none
Data trust "whose number is right?" one source of truth
← All case studies"Board meetings used to start with arguing about whose numbers were right. Now they start with decisions."
Head of Operations, energy utility, Germany
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