1. Performance of New England During the Blackout of 2003 Presented by David Bertagnolli, Principal Engineer ISO-New England To the Restructuring Roundtable Boston, MA – September 19, 2003

2. 2 Initial Conditions - 4:00 pm, 8/14/03 PV-20 K37 K6 E205W 393 398 690 396 500 MW 1400 MW 50 MW 200 MW 0 MW 400 MW NE to NY New England Load 23,370 MW Cross Sound Cable-Out of Service 1385 Cable Highgate Citizens Phase II HVDC

3. 3 Surge Toward New York - 4:10:45 pm PV-20 K37 K6 E205W 393 398 690 396 100+ MW 1400 MW 50 MW 200 MW Transient 2500+ MW NE to NY Cross Sound Cable-Out of Service 1385 Cable Highgate Citizens Phase II HVDC Frequency falls to 59.4 HZ

4. 4 Norwalk-Northport Trip - 4:11:45 pm PV-20 K37 K6 E205W 393 398 690 396 150 MW 1400 MW 50 MW 0 MW Cross Sound Cable-Out of Service 1385 Cable Highgate Citizens Total New England Load lost: 2500 MW Phase II HVDC

5. 5 Restoration Event Sequence 8/14/03 –23:45 – all New England Bulk system restored except NY ties –23:50 – US DOE issues order authorizing use of Cross Sound Cable 8/15/03 –01:53 – First NY tie restored: Northfield, MA to Alps, NY in service –12:00 – Cross Sound Cable energized 8/16/03 –03:45 – Discontinued emergency restoration procedure 8/17/03 –07:00 - Cross Sound Cable curtailed to zero. 8/18/03 8/23/03 – US DOE issues a second order authorizing use of Cross Sound Cable

6. 6 ISO-NE and Satellite Control Centers ISO-NE REMVEC CONVEX New Hampshire Maine ISO New England Full Operational Control One Set of Hands on the Wheel

7. 7 MISO Study Regions

8. 8 1.Operational Authority and RTO Status 2.Mandatory Reliability Standards and Standardized Operating Procedures 3.Transmission Infrastructure Planning and Improvements 4.Siting Approval Authority Policy Recommendations