PJM is a Regional Transmission Organization (RTO) that manages Bulk Power System Reliability in Eastern Interconnection (including 13 states and Washington D.C), with 800+ members, peak load 163,000+ MW and service area population 60 million people. It is a quite challenging work in PJM control center operations. PJM started using PI for EMS since 2001, now with 40 production servers with PI Systems. This presentation will showcase the pictures of the impressive PI displays on 20’ wide x 12.5’ high Generation Dispatcher Video Wall and 60’ wide x 6’ high Transmission Dispatcher Video Wall. The speakers will demonstrate many key situational awareness applications that came from the domain expertise and creativity of the team-work efforts from power system dispatchers and power system operations engineers. The speakers will also showcase the new implementation in PI System including State Estimator data, synchrophasor data, new displays and the PI Sever upgrades, etc.