Stan Chapman SVP, Marketing & Customer Services Oct 8, 2013

Pipeline More than 15,000 Miles –Columbia Gas: 12,000 Miles –Columbia Gulf: 3,400 Miles –Millennium: 180 Miles –Crossroads: 200 Miles Delivers Approximately 1.3 Tcf per Year –5% of U.S. Market –Serves Customers in 16 States Compression 1.1 Million Horsepower 104 Stations –Gulf: 77 Units –TCO: 316 Units –Millennium: 2 Units Storage 280 MMDth –4.7 Bcf/Deliverability –37 Storage Fields in Four States Power Generation 27 Power Plants on System –19 on Columbia Gas in PJM –7 on Columbia Gulf are bound for MISO –1 on Millennium in NYISO –19.8 GW Capacity (12.7 GW in PJM) Columbia Gas Transmission Columbia Gulf Transmission Crossroads Pipeline Hardy Storage Company Millennium Pipeline Storage 2

3 3

4 4

5 Coal Oil Gas Hydro Other Renewable Nuclear SOURCE: Pira 2012

6 Net Generation Demand Gas vs Coal Gas fired generation continues to gain market share over coal in PJM.

7 PJM Projected Generation Surplus / Deficit High Case Base Case Low Case SOURCE: SNL Jan 2013

Gas vs. Power day disconnect Limited communications between participants Pressure guarantees Penalties may not incentivize desired behavior Daily vs. hourly contracting Lack of firm transport held by power generators Primary firm, secondary firm & Interruptible Not nominating proper quantities Does not provide for proper hourly flows Does not cover required transport quantity Swings on pipeline line pack Not nominating primary receipt points 8 Gas Electric FERC

9

10

11 FERC MARKETERSISO/RTOPIPELINES POWER GENERATORS ? PRODUCERS

Encourage use of adequate transportation agreements: o PJM to hold transport and release to generators? o Flow through mechanism for transportation charges? Ask gas supply questions when dispatching: o What type of transport (FT or IT)? o What Priority (in the path or out of path)? o Do you have supply for your transport? Develop new services if needed – customer driven effort. Encourage new and needed infrastructure Address disconnects between Gas & Electric communications & and energy days. 12