New York ISO updates list of shut, to-be-shut power facilities

The New York ISO said in an April 13 update that there are a total of 15 power units/facilities that have been retired recently, fall under pending mothball requests or are in forced outages.

They are, by unit name, plant operator and interconnecting transmission owner:

  • Huntley 67, NRG Power Marketing LLC, National Grid, Retired 03/01/2016
  • Huntley 68, NRG Power Marketing LLC, National Grid, Retired 03/01/2016
  • Ravenswood 04, TC Ravenswood LLC, Con Ed, In Service, Mothball Notice Issued 10/19/2015, effective 05/01/2016
  • Ravenswood 05, TC Ravenswood LLC, Con Ed, In Service, Mothball Notice Issued 10/19/2015, effective 05/01/2016
  • Ravenswood 06, TC Ravenswood LLC, Con Ed, In Service, Mothball Notice Issued 10/19/2015, effective 05/01/2016
  • Fitzpatrick 1, Entergy Nuclear Power Marketing LLC, National Grid, In Service, Retirement Notice Issued 11/02/2015, effective Q4 2016-Q1 2017
  • Dunkirk 2, NRG Power Marketing LLC, National Grid, In Mothball Outage as of 01/01/2016
  • Astoria GT 05, NRG Power Marketing LLC, Con Ed, ICAP Ineligible Forced Outage as of 01/01/2016
  • Astoria GT 07, NRG Power Marketing LLC, Con Ed, ICAP Ineligible Forced Outage as of 01/01/2016
  • Astoria GT 12, NRG Power Marketing LLC, Con Ed, ICAP Ineligible Forced Outage as of 01/01/2016
  • Astoria GT 13, NRG Power Marketing LLC, Con Ed, ICAP Ineligible Forced Outage as of 01/01/2016
  • Niagara Bio‐Gen, Niagara Generation LLC, National Grid, ICAP Ineligible Forced Outage as of 01/01/2016
  • Astoria GT 08, NRG Power Marketing LLC, Con Ed, In Service, Mothball Notice Issued 01/04/2016, NRG Power Marketing has requested that the New York PSC waive the 90 day notification requirement and allow Units GT08, GT 10, and GT 11 to mothball as soon as allowed under the NYISO’s rules.
  • Astoria GT 10, NRG Power Marketing LLC, Con Ed, In Service, Mothball Notice Issued 01/04/2016
  • Astoria GT 11, NRG Power Marketing LLC, Con Ed, In Service, Mothball Notice Issued 01/04/2016

Huntley Power LLC, the NRG subsidary that operated the two retired Huntley units, on Jan 11 notified the Federal Energy Regulatory Commission of its withdrawal of a proposed unexecuted reliability must-run (RMR) agreement. On Aug. 25, 2015, Huntley submitted a 180-day notice to the New York Public Service Commission (NYPSC) that it intended to retire Units 67 and 68 on March 1, 2016. The NYPSC then requested the New York Independent System Operator (NYISO) and Niagara Mohawk Corp. d/b/a National Grid to assess the reliability impacts of the Huntley facility retiring.

Since making its initial application for RMR service, Huntley received several updates from the NYISO and National Grid as to whether there would be a reliability need for one or more units at the Huntley site. In particular, on Oct. 30, 2015, the NYISO and National Grid informed the New York Department of Public Service that there would be a reliability need if certain transmission upgrades are not completed by June 1, 2016, specifically low voltage issues adjacent to the Huntley Station with Huntley out of service. In conformance with this finding, Huntley filed an amended application to revise its cost-of-service agreement on Dec. 7, 2015.

But, on Dec. 18, the NYISO and National Grid changed their minds and informed Huntley that the facility was not needed for reliability after March 1, 2016. As a result of this information that RMR service is not needed, Huntley withdrew its filing.

Huntley Units 67 and 68 are coal-fired units, with 218 MW of nameplate capacity apiece, that began operating in 1957 and 1958, respectively. The units are located in Tonawanda, N.Y., and are interconnected to the National Grid system in NYISO’s Zone A.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.