1. WECC Frequency Contour for Opening Palo Verde 1 and 2 6 Seconds of Simulation Thomas J. Overbye Fox Family Professor of Electrical and Computer Eng University of Illinois at Urbana-Champaign overbye@illinois.edu

2. Pre-Loss of Generation 2

3. 0.2 Seconds after Contingency

4. 0.4 Seconds after Contingency

5. 0.6 Seconds after Contingency

6. 0.8 Seconds after Contingency

7. 1.0 Seconds after Contingency

8. 1.2 Seconds after Contingency

9. 1.4 Seconds after Contingency

10. 1.6 Seconds after Contingency

11. 1.8 Seconds after Contingency

12. 2.0 Seconds after Contingency

13. 2.2 Seconds after Contingency

14. 2.4 Seconds after Contingency

15. 2.6 Seconds after Contingency

16. 2.8 Seconds after Contingency

17. 3.0 Seconds after Contingency

18. 3.2 Seconds after Contingency

19. 3.4 Seconds after Contingency

20. 3.6 Seconds after Contingency

21. 3.8 Seconds after Contingency

22. 4.0 Seconds after Contingency

23. 4.2 Seconds after Contingency

24. 4.4 Seconds after Contingency

25. 4.6 Seconds after Contingency

26. 4.8 Seconds after Contingency

27. 5.0 Seconds after Contingency

28. 5.2 Seconds after Contingency

29. 5.4 Seconds after Contingency

30. 5.6 Seconds after Contingency

31. 5.8 Seconds after Contingency

32. 6.0 Seconds after Contingency