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For power utilities, the business and operational model used to be quite simple: deliver electricity reliably from power generating stations through the power grid to customers who consume it passively. But momentous changes are now in motion. Utilities are deploying substation automation technologies and smart grid applications, and modernizing their power grids. This is to improve outage management and recovery, optimize the efficiency of grid and business operations, expand the monitoring of grid health, as well as enhance their relationship with customers.