Application for the Lo

Generator Gas Sup

- New York City

OC Meeting – May 12, 2
Existing Applications

 During the Summer 2010 period, the ex

applications of the NYSRC “Gas burninNYC” requires certain In-City units to buminimum level, based on the forecasted as follows:

3⁄4 At NYISO forecasted "NYC - Zone J" load above 7,85

Con Edison forecasted electric system loads above 9the Summer Capability Period, “minimum oil burn/au

swapping capability” is required in one of the Astorior 5) connected to the Astoria West bus or NYPA CC

3⁄4 At NYISO forecasted "NYC - Zone J" load above 8,27

forecasted electric system loads above 9,500 MW) duCapability Period, “minimum oil burn/automatic fuel 

capability” is required in two of the following units wconnected to the Astoria East bus and the other conAstoria West bus: Astoria 138 kV units (3,4,or 5), AstCC1/2.
Existing Applications (continued)

3⁄4 At NYISO forecasted "NYC - Zone J" load above 8

Edison forecasted electric system loads above 10the Summer Capability Period, additional "minimu

capability" is required in one Ravenswood (1,2,3) facility.

3⁄4 At NYISO forecasted "NYC - Zone J" load above 9

forecasted (Con Edison forecasted electric system 11,000 MW) during the Summer Capability Period

unit, ER 6 or 7, must be on “minimum oil burn”.

3⁄4 At NYISO forecasted "NYC - Zone J" load above 1

Edison forecasted electric system loads above 11the Summer Capability Period, the Astoria Energy 

CC1/CC2 generating facilities must be on “automcapability“ and Astoria 4 and 5, Ravenswood 1 or 

and East River 6 and 7 generating facilities must “minimum oil burn”.
The Study

 Con Edison conducted a study to verify 

requirements of the application for the Scapability period. 

 Study reflects several changes to the Co

system for Summer 2011:

3⁄4 The addition of Astoria Energy II – Increases 

generation by 500 MW.

3⁄4 The addition of 345kV Feeder M29 between 

Academy 345 kV Substations.

 This year study is contingent upon Asto

being commercial by the start of the sumnot then 2010 study results will take pre

 The study and its findings have been pr

NYISO for review and approval.
The Study Results

 The electric studies will change the exis

applications of the NYSRC Gas burning the following for the Summer of 2011:

3⁄4 At NYISO forecasted "NYC - Zone J" load above 

(equivalent Con Edison forecasted electric syste9,000 MW) during the Summer Capability Period, 

burn/automatic fuel swapping capability” is requEnergy II and in either one of the Astoria 138 kV 

facility (Ast. 3, 4, or 5) connected to the Astoria WCC1/CC2. 

3⁄4 At NYISO forecasted "NYC - Zone J" load above 

Edison forecasted electric system loads above 9Summer Capability Period, along with the design

at the previous load level, “minimum oil burn/autswapping capability” in either one of the Astoria 

generating facility (Ast, 3, 4, or 5) connected to thor Astoria Energy I.
The Study Results (Contin

3⁄4 At NYISO forecasted "NYC - Zone J" load above 

forecasted (Con Edison forecasted electric syst11,000 MW) during the Summer Capability Perio

designated plants stated at the previous load legenerating facility, either ER 6 or 7, must be on burn”.

3⁄4 At NYISO forecasted "NYC - Zone J" load above 

Edison forecasted electric system loads above the Summer Capability Period, along with the de

stated at the previous load level, one Ravenswofacility (either Rav 1 or 2) must be on “minimum 
The Study Results (Contin

• At NYISO forecasted "NYC - Zone J" load above 

Edison forecasted electric system loads above the Summer Capability Period, along with the de

stated at the previous load level, one Astoria Stefacility (either Ast. 3, 4 or 5) must be on “minimuconnected to the Astoria West Bus.

• At NYISO forecasted "NYC - Zone J" load above 

Edison forecasted electric system loads above the Summer Capability Period, all dispatched du

be on “minimum oil burn/automatic fuel swappi(Ravenswood 1, 2 & 3, Astoria 3, 4 & 5, Astoria ERiver 6 & 7 and NYPA CC1/CC2)
The Study Conclusion

 The number of generators required to b

minimum oil burn has decreased as a rrevised study assumptions. Application change to reflect these results.
Our Recommendation

Con Edison recommends that a reApplication No. 69 reflecting these summer capability period requiremaccepted by the Operating Commimplementation.