GREADER makes hidden degradation in operating power cables and welded energy pipelines measurable on demand, without a diagnostic outage, by injecting a controlled signal and analyzing its return. Together, these assets form the Energy Grid. Offline cable tests interrupt service; passive monitors wait for naturally occurring activity; periodic pipeline inspections leave gaps. One portable signal unit uses clamp-on accessories: electromagnetic-wave coupling for cables and guided-ultrasonic-wave coupling for pipelines. It supports Stage I post-failure fault localization and Stage II outage-free, segment-level Health Index measurement. Repeated Stage II measurements create the time-series foundation for Stage III remaining-useful-life prediction, now in development. SaaS converts measurements into segment status, alerts, trends, diagnostic views, and maintenance priorities. This turns hidden degradation into a repeatable industrial maintenance workflow before an unplanned outage, leak, or unnecessary full-route replacement.