PMSS has 70 staff and had revenues of almost £8m ($12.5m) in 2011.
TÜV SÜD has expanded its renewable energy services operations in recent years and opened a new offshore wind department in Hamburg, Germany last year.
Romsey-based PMSS has subsidiaries in Germany and the US. Its work includes project development and execution, due diligence, planning, health & safety, and environmental protection for wind farms.
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