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

Generator tripsGenerator trips

1 - 12:05:44 Conesville 5 [375 MW]1 - 12:05:44 Conesville 5 [375 MW] 2 - 13:14:04 Greenwood 1 [785 MW]2 - 13:14:04 Greenwood 1 [785 MW] 3 - 13:31:34 Eastlake 5 [597 MW]3 - 13:31:34 Eastlake 5 [597 MW]

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

Transmission line disconnects in Transmission line disconnects in southwestern Ohiosouthwestern Ohio

4 - 14:02 Stuart - Atlanta [345 kV]4 - 14:02 Stuart - Atlanta [345 kV]– FireFire

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

Transmission lines disconnect Transmission lines disconnect between eastern Ohio and between eastern Ohio and northern Ohionorthern Ohio

5 - 15:05:41 Harding-Chamberlain [345 kV]5 - 15:05:41 Harding-Chamberlain [345 kV] 6 - 15:32:03 Hanna-Juniper [345 kV]6 - 15:32:03 Hanna-Juniper [345 kV]

– TreeTree 7 - 15:41:33 Star-South Canton [345 kV]7 - 15:41:33 Star-South Canton [345 kV]

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

Remaining transmission lines Remaining transmission lines disconnect from eastern into disconnect from eastern into northern Ohionorthern Ohio

8 - 15:45:33 Canton Central-Tidd [345 kV]8 - 15:45:33 Canton Central-Tidd [345 kV] 9 - 16:06:03 Sammis-Star [345 kV]9 - 16:06:03 Sammis-Star [345 kV]

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

Transmission lines into Transmission lines into northwestern Ohio disconnect, and northwestern Ohio disconnect, and generation trip in central Michigangeneration trip in central Michigan

10 - 16:08:58 Galion-Ohio Central-10 - 16:08:58 Galion-Ohio Central-

Muskingum [345 kV]Muskingum [345 kV] 11 - 16:09:08 East Lima-Fostoria 11 - 16:09:08 East Lima-Fostoria

Central [345 kV]Central [345 kV] 12 - 16:08:23 Kinder Morgan [500 MW] 12 - 16:08:23 Kinder Morgan [500 MW]

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

Transmission lines disconnect Transmission lines disconnect across Michigan and northern across Michigan and northern Ohio, separates from PennsylvaniaOhio, separates from Pennsylvania

13 - 16:10 Harding-Fox [345 kV]13 - 16:10 Harding-Fox [345 kV] 14 - 16:10:04 - Twenty generators along14 - 16:10:04 - Twenty generators along

Lake Erie in northern Ohio (loaded to 2174 MW)Lake Erie in northern Ohio (loaded to 2174 MW) 15 - 16:10:37 - West-East Michigan [345 kV]15 - 16:10:37 - West-East Michigan [345 kV] 16 - 16:10:38 - Midland Cogeneration Venture (loaded to 1265 MW)16 - 16:10:38 - Midland Cogeneration Venture (loaded to 1265 MW) 17 - 16:10:38 - Transmission system separates Northwest of Detroit17 - 16:10:38 - Transmission system separates Northwest of Detroit 18 - 16:10:38 - Perry-Ashtabula-Eirie west [345 kV] 18 - 16:10:38 - Perry-Ashtabula-Eirie west [345 kV]

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

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

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

Four transmission lines disconnect Four transmission lines disconnect between Pennsylvania and New between Pennsylvania and New YorkYork

19 - 16:10:40 Homer City-Watercure Road [345 kV]19 - 16:10:40 Homer City-Watercure Road [345 kV] 20 - 16:10:40 Homer City-Stolle Road [345 kV]20 - 16:10:40 Homer City-Stolle Road [345 kV] 21 - 16:10:42 South Ripley-Dunkirk [230 kV]21 - 16:10:42 South Ripley-Dunkirk [230 kV] 22 - 16:10:44 East Towanda-Hillside [230 kV] 22 - 16:10:44 East Towanda-Hillside [230 kV]

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

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

Transmission lines disconnect and Transmission lines disconnect and generation trip in northern Ohiogeneration trip in northern Ohio

23 - 16:10:41 Fostoria Centrail-Galion [345 kV]23 - 16:10:41 Fostoria Centrail-Galion [345 kV] 24 - 16:10:41 Perry 1 nuclear unit [1252 MW]24 - 16:10:41 Perry 1 nuclear unit [1252 MW] 25 - 16:10:41 Avon Lake 9 unit [616 MW]25 - 16:10:41 Avon Lake 9 unit [616 MW] 26 - 16:10:41 Beaver-Davis Besse [345 kV]26 - 16:10:41 Beaver-Davis Besse [345 kV]

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

Transmission paths disconnect in Transmission paths disconnect in northern Ontario and New Jersey, northern Ontario and New Jersey, isolating the Northeast portion of isolating the Northeast portion of the East Interconnectionthe East Interconnection

27 - 16:10:42 Campbell unit 3 [820 MW]27 - 16:10:42 Campbell unit 3 [820 MW] 28 - 16:10:43 Keith-Waterman [230 kV]28 - 16:10:43 Keith-Waterman [230 kV] 29 - 16:10:45 Wawa-Marathon [230 kV]29 - 16:10:45 Wawa-Marathon [230 kV] 30 - 16:10:45 Branchburg-Ramapo [500 kV] 30 - 16:10:45 Branchburg-Ramapo [500 kV]

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

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

New York splits east-to-west. New New York splits east-to-west. New England (except south-western England (except south-western Connecticut) and the Maritimes Connecticut) and the Maritimes separate from New York and separate from New York and remain intactremain intact

31 - 16:10:46 New York-New England transmission lines disconnect31 - 16:10:46 New York-New England transmission lines disconnect 32 - 16:10:48 New York transmission split east-west32 - 16:10:48 New York transmission split east-west

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

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

Ontario separates from New York Ontario separates from New York west of Niagara Falls and west of St. west of Niagara Falls and west of St. Lawrence. South-western Connecticut Lawrence. South-western Connecticut separates from New York and backs separates from New York and backs outout

33 - 16:10:50 The Ontario system just west of Niagara Falls and west of St. 33 - 16:10:50 The Ontario system just west of Niagara Falls and west of St. Lawrence separates from New York.Lawrence separates from New York.

34 - 16:11:22 Long Mountain-Plum Tree [345 MW]34 - 16:11:22 Long Mountain-Plum Tree [345 MW] 35 - 16:11:57 Remaining transmission lines between Ontario and eastern 35 - 16:11:57 Remaining transmission lines between Ontario and eastern

Michigan separateMichigan separate

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

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

16:13 - Cascading sequence essentially 16:13 - Cascading sequence essentially completecomplete