Storm Hardening Initiatives Robert Schimmenti VP Engineering and Planning Consolidated Edison Company of New York, Inc. June 12, 2013

Pre-Sandy Infrastructure Investments 2 Since 1992 nor'easter – Raised critical equipment to enhance flood protection – Upgraded pumps and flood gates – Installed protective moats Since Hurricane Katrina – New transformers and network protectors in flood zones must be submersible or installed above flood level – New submersible equipment tested to operate under 25 feet of brackish water  Limiting Damage to Overhead System – Aggressive tree trimming to reduce storm damage to power lines – Monthly aerial inspections and semi- annual ground patrol inspection of transmission line rights-of-way  Additional Investments – Control centers can remotely monitor power flow, feeder status, and switches – Operators can remotely operate breakers and switches to manage the grid and improve restoration lines

RegionCustomer Outages Bronx75,406 Brooklyn143,088 Queens160,893 Staten Island179,530 Manhattan235,451 New York City Total794,368 Westchester County320,926 Con Edison System Total1,115,294 Sandy Impact 3

Historical Storm Comparison DateType of StormCustomers Interrupted 29-Oct-12Super storm Sandy1,115,000 * 28-Aug-11Hurricane Irene203, Mar-10Nor'easter174, Oct-11Nor'easter135,913 9-Sep-85Hurricane Gloria110,515 2-Sep-06Tropical Storm Ernesto78, Feb-10Snow65, Jan-06Wind / Rain61, Mar-97Nor'easter45, Oct-96Nor'easter41,830 *Note: includes Nor'easter Athena 4

Rye Playland Base Camp

Westchester Tree Impact

7 Advanced Equipment Selective Undergrounding Reduce Segment Size Sacrificial Components Enhanced Technology Overhead Distribution Initiatives

Armonk Loop - Overview Armonk Loop Split – Extend new feeder – Armonk loop into two loops – New storm hardened cable VRS Tie 14W03 7W45 14W10 Armonk Loop S/S Pleasantville Millwood West Mid- point VRS Banksville Loop Tie Mid- point VRS 8

9 East 14 th Street and Avenue C

Impact of Sandy on Con Edison Facilities 10

4 Hours of Salt Water Corrosion 11

12 Sandy Water Mark Flood Walls Around Control Equipment

High Capacity Pumps 13

Elevate Critical Components Con Edison Designed Enclosure Lift 14

Underground Network System Network Reconfiguration Bowling Green: 123 MW Fulton: 115 MW New Sub-Networks  Utilize Latest Technology  Harden Components  Mitigate Impact  Facilitate Restoration 15

Underground Smart Switch 16

17 Submersible Transformer Switch

18 Storm Hardening Initiatives Robert Schimmenti VP Engineering and Planning Consolidated Edison Company of New York, Inc. June 12th, 2013