Case Study: ENERCON GmbH achieves reduced downtime and accelerated ERP migration with SAP HANA

How Can Dedicated Guidance Cut Downtime and Enable the Best Outcomes in a Complex Migration

ENERCON GmbH, a German wind-turbine manufacturer with 13,000 employees, undertook a complex “big‑bang” ERP transformation to SAP S/4HANA that involved archiving 800 million documents and migrating 2.8 billion financial records across 145 subsidiaries in 32 countries. The project needed to simplify a 59‑system IT landscape (22 systems on SAP HANA), minimize downtime during cutover, and enable advanced reporting, planning, and compliance capabilities.

With guidance from SAP Business Transformation Services and SAP ActiveAttention, ENERCON used services such as the SAP OS/DB Migration Check, fit‑gap and custom‑code analyses, conversion downtime optimization, and go‑live support to execute the migration within a 2.5‑day transition window. The approach reduced risk and downtime (cutting overall downtime by eight hours), accelerated adoption (37% of productive SAP systems moved to HANA), and delivered measurable business benefits including a 75% faster month‑end close and a stronger foundation for reporting, tax compliance, and cloud transformation.

Enercon

Sandra Kunst

Division Manager