This document discusses challenges in managing aging transmission and distribution assets for electric utilities. It outlines how utilities previously relied on routine-based maintenance schedules rather than advanced analytics. The document proposes building an analytical asset management approach using real-time performance data and predictive models to measure asset health and criticality. This would help utilities prevent failures, target high-priority assets, and lower costs through an optimized maintenance and replacement plan. A case study example on power transformer fleet management is also provided.