Wholesale Market Service Provider Operations Bids Clearing Price 5-min Modal Energy Prices Usage Supply Usage Information Dispatch System Bids Clearing Price Monthly Bill Operations Center ~200 Homes on Four Feeders Meter clearing price. an analysis of the field results indicated that wholesale purchases and household bills reduced by about 5% each. the field data was also used Home Residential Energy Management System Consumer Display Field figure 3. A design overview of the AEP Ohio gridSMART RTP system. rebates a household for the difference between the congested clearing price and the normal 5-min real-time price and provides an incentive payment to a household if its bid was above the normal clearing price but below the congestion Programmable Thermostat to calibrate simulated household demand-response models for investigating higher penetration levels participants. figure 5 plots the expected response to congestion events on a feeder with 100% rtP household penetration. the dotted line represents a simulation without rtP response and the remaining lines show responses and the rebound for one-, two-, four-, and six-hour congestion events that represent the maximum response using the diversity of thermostat settings seen in the field. Pacific Northwest Smart Grid Demonstration, 2010-2015 the Pacific northwest Smart grid demonstration (PnWSgd) included multiple states and cooperation from Feeder 180 Power 10 8 6 4 2 Devices Respond to Price Fluctuations 500 3 -3 04 05 80 78 76 74 72 Price Rises to Price Cap 12 13 14 15 16 Hour Observed Average Temperature Temperature Average Deviation 17 18 19 20 21 House Temperatures, Feeder 180 18 July 2013 20:30 5 -5 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 figure 4. The AEP Ohio gridSMART RTP transactive system in action. 46 ieee power & energy magazine may/june 2016 RTP PJM Price Constrained Price Price Volatility 150 100 50 Feeder-Rated Capacity Feeder Limit Feeder Power HVAC Load Oversatisfied Must Run 04 05 06 HVAC Units Drop Off Inactive Active 12 13 14 15 16 Hour 18 July 2013 20:30 17 18 19 20 21 Feeder 180 Price Reduce Feeder Capacity to Engage End Use Units Rebound When Capacity Returns to Normal Average Indoor Temperature Rises ~4 °F Over Four Hours F US$/MWh MW ∆ F