German Energy Platform Reduces Customer Data Complaints by 70% Through Systematic Validation

viadukt, a digital platform connecting stakeholders in Germany's €185 billion energy-efficient renovation market, has reduced customer data complaints by 70% after implementing systematic data validation processes with Recce.

The energy renovation platform manages 279 million building parameters that power property analyses and renovation recommendations for homeowners, institutions, banks, and craftspeople. Data accuracy directly impacts loan approvals, renovation assessments, and stakeholder trust across viadukt's ecosystem.

The Challenge

Following nationwide expansion, viadukt's three-person data team encountered escalating data quality issues. Building footprint and elevation errors caused net area estimates to deviate by over 30%, compromising energy consumption calculations and ROI projections.

The team spent over 80% of capacity manually investigating customer complaints, tracing root causes through complex pipelines, and deploying reactive fixes. Each inaccurate analysis rippled through the platform, affecting renovation recommendations and undermining relationships with partner banks and craftspeople.

Implementation and Results

After discovering Recce through a shared article on data validation in pull requests, team member Alexey Egorov evaluated the platform's integration capabilities. The implementation enabled collaborative validation directly within pull requests, with features including lineage diff, schema diff, query diff, and value diff.

Following deployment, measurable outcomes included:

• Customer data complaints decreased 70%
• Data team firefighting reduced from over 80% of capacity to less than 15%
• Data review cycles accelerated through automated validation
• Team capacity shifted toward proactive quality assurance

"Before Recce, ensuring data accuracy was a constant challenge for our team," said viadukt representatives. "Now, with Recce Cloud, data review processes have become faster, more confident, and focused on delivering reliable data partners can trust."

Business Impact

Improved data quality strengthened viadukt's position as Germany advances toward 2045 climate neutrality goals. Accurate building data enables stakeholders across the renovation ecosystem to make informed decisions about sustainable building practices.

The validation system supports viadukt's partnerships with financial institutions and craftspeople by ensuring assessment accuracy from initial analysis through project completion.

About viadukt

viadukt is a German platform for building energy renovation, connecting property owners with financing, energy consultation, and certified craftspeople through a comprehensive datahub of 279 million building parameters. Founded in 2022 in Wuppertal, the company drives Germany's building energy transition through digital innovation. Learn more at viadukt.de

About Recce

Recce provides data validation and change impact assessment for modern data teams. The platform enables systematic data diffing and collaborative review processes, helping teams prevent data quality issues before production deployment. Learn more at reccehq.com