multiple electric utilities, including rural electric co-ops and investor-owned, municipal, and other public utilities, as indicated in figure 6. there were 55 unique instantiations of distinct smart grid systems demonstrated at the project sites. the local objectives for these systems included improved reliability, energy conservation, improved efficiency, and demand responsiveness. the demonstration deployed a transactive system to coordinate the operation of distributed energy resources and addressed regional objectives, including the mitigation of renewable energy intermittency and the flattening of system load. the transactive system coordinated a regional response across 11 utilities and showed that distributed assets can respond dynamically on a wide scale. 3.50 3.00 2.50 2.00 1.50 1.00 BC Hydro WA U. Washington (Customer) *Seattle (and SCL) Peninsula Light (COOP) *Fox Island Ellensburg (MUNI) Hanford Bonneville Bonneville Power Administration (BPA) *Portland John Day Bonneville Portland General Electric *Salem McNary Benton (PUD) Kennewick State Line Avista *Pullman (and WSU) Ice Harbor L. Granite Little Goose L. Monumental Milton-Freewater (MUNI) Garrison North Western Energy *Helena To Colstrip Townsend Grand Coulee Island Power (COOP) *Spokane Taft MT Flathead Electric (COOP) *Kalispell Hot Springs Key Subprojects Hydro Power Wind Power Carbon Power Nuclear Power Control One-Hour CPP Two-Hour CPP One-Hour Event Two-Hour Event Four-Hour CPP 14:00 15:00 16:00 17:00 18:00 Four-Hour Event Six-Hour Event Six-Hour CPP 17 July 2013 19:00 20:00 21:00 22:00 23:00 figure 5. A Simulated response to congestion events calibrated from gridSMART field data. figure 7 provides a high-level summary of the transactive-node approach developed for this project. each node represents one or more electrically connected resources. Idaho Power Lower Valley Power (COOP) Idaho Falls Power *Jackson Palisades PacifiCorp Borah OR COB NOB (DC Intertie) figure 6. The PNWSGD geographical region, including participants and major generation and transmission. may/june 2016 ieee power & energy magazine 47 ID WY Demand (kW)