1. U.S./CANADA Power Outage Task Force n Generator trips n 1 - 12:05:44 Conesville 5 [375 MW] n 2 - 13:14:04 Greenwood 1 [785 MW] n 3 - 13:31:34 Eastlake 5 [597 MW]

2. U.S./CANADA Power Outage Task Force n Transmission line disconnects in southwestern Ohio n 4 - 14:02 Stuart - Atlanta [345 kV] –Fire

3. U.S./CANADA Power Outage Task Force n Transmission lines disconnect between eastern Ohio and northern Ohio n 5 - 15:05:41 Harding-Chamberlain [345 kV] n 6 - 15:32:03 Hanna-Juniper [345 kV] –Tree n 7 - 15:41:33 Star-South Canton [345 kV]

4. U.S./CANADA Power Outage Task Force n Remaining transmission lines disconnect from eastern into northern Ohio n 8 - 15:45:33 Canton Central-Tidd [345 kV] n 9 - 16:06:03 Sammis-Star [345 kV]

5. U.S./CANADA Power Outage Task Force n Transmission lines into northwestern Ohio disconnect, and generation trip in central Michigan n 10 - 16:08:58 Galion-Ohio Central- Muskingum [345 kV] n 11 - 16:09:08 East Lima-Fostoria Central [345 kV] n 12 - 16:08:23 Kinder Morgan [500 MW]

6. U.S./CANADA Power Outage Task Force n Transmission lines disconnect across Michigan and northern Ohio, separates from Pennsylvania n 13 - 16:10 Harding-Fox [345 kV] n 14 - 16:10:04 - Twenty generators along Lake Erie in northern Ohio (loaded to 2174 MW) n 15 - 16:10:37 - West-East Michigan [345 kV] n 16 - 16:10:38 - Midland Cogeneration Venture (loaded to 1265 MW) n 17 - 16:10:38 - Transmission system separates Northwest of Detroit n 18 - 16:10:38 - Perry-Ashtabula-Eirie west [345 kV]

7. U.S./CANADA Power Outage Task Force

9. n Four transmission lines disconnect between Pennsylvania and New York n 19 - 16:10:40 Homer City-Watercure Road [345 kV] n 20 - 16:10:40 Homer City-Stolle Road [345 kV] n 21 - 16:10:42 South Ripley-Dunkirk [230 kV] n 22 - 16:10:44 East Towanda-Hillside [230 kV]

10. U.S./CANADA Power Outage Task Force

11. n Transmission lines disconnect and generation trip in northern Ohio n 23 - 16:10:41 Fostoria Centrail-Galion [345 kV] n 24 - 16:10:41 Perry 1 nuclear unit [1252 MW] n 25 - 16:10:41 Avon Lake 9 unit [616 MW] n 26 - 16:10:41 Beaver-Davis Besse [345 kV]

12. U.S./CANADA Power Outage Task Force n Transmission paths disconnect in northern Ontario and New Jersey, isolating the Northeast portion of the East Interconnection n 27 - 16:10:42 Campbell unit 3 [820 MW] n 28 - 16:10:43 Keith-Waterman [230 kV] n 29 - 16:10:45 Wawa-Marathon [230 kV] n 30 - 16:10:45 Branchburg-Ramapo [500 kV]

13. U.S./CANADA Power Outage Task Force

14. n New York splits east-to-west. New England (except south-western Connecticut) and the Maritimes separate from New York and remain intact n 31 - 16:10:46 New York-New England transmission lines disconnect n 32 - 16:10:48 New York transmission split east-west

15. U.S./CANADA Power Outage Task Force

16. n Ontario separates from New York west of Niagara Falls and west of St. Lawrence. South-western Connecticut separates from New York and backs out n 33 - 16:10:50 The Ontario system just west of Niagara Falls and west of St. Lawrence separates from New York. n 34 - 16:11:22 Long Mountain-Plum Tree [345 MW] n 35 - 16:11:57 Remaining transmission lines between Ontario and eastern Michigan separate

17. U.S./CANADA Power Outage Task Force

18. n 16:13 - Cascading sequence essentially complete