PowerWorld Viewer is a freeware program designed to make it easy to exchange power flow cases. You can view a solved power flow case graphically using animated one-lines.

With Viewer, you can view data, pan and zoom on one-line diagrams, contour data, and distribute your power system cases to others.  Viewer does not, however, allow you to make any modifications to the viewed system, re-solve the flows in the network, or modify the graphical representation of the system. PowerWorld Simulator allows you to accomplish these tasks.

Some example one-lines are included in the download.  PowerWorld Corporation can provide qualified industry participants with cases and one-line diagrams for 1998 or 1999 FERC 715 Filings for these NERC Regional Reliability Councils.  Please contact PowerWorld Corporation at for more information.