Smart Grid IT Systems Market by Software (Advance Metering Infrastructure (AMI), Smart Grid Distribution Management, Smart Grid, Communication, Grid Asset Management, Substation Automation, Billing and Customer Information System); by Hardware (AMI meter, Sensors, Networking hardware, Programmable Logic Controller (PLC)); by Service (Consulting, Deployment and integration, Support and maintenance); United States Insights, Growth, Size, Comparative Analysis, Trends and Forecast, 2018 – 2026