PG&E is overhauling its aging substation automation systems to support California’s clean energy push and rising grid demands. (T&D World)
Thousands of RTUs installed since the 1990s are being replaced with modular, scalable platforms that can process more data, integrate renewables, and improve cybersecurity.
PG&E says the effort will improve resilience, cut long-term costs, and set a template for other utilities modernizing critical grid infrastructure.