Data Logging, Testing and Commissioning To manage the challenges of today's complex electrical power systems and tightening budgets, facility managers need to understand the critical connection between electrical commissioning and acceptance testing, and planning for lifecycle management. To assist in this responsibility, this article will review the scope of services required for each stage of electrical system lifecycle management, and provide details on how proper commissioning and acceptance testing should inform the design of a maintenance program that fits the needs of a specific facility.