New York ISO proposes changes to interconnection procedures

In an effort to approve the interconnection process for uprated power generating facilities, the New York Independent System Operator (NYISO) on Dec. 16 submitted at the Federal Energy Regulatory Commission a series of rules changes.

It submitted a new Attachment X to the NYISO Open Access Transmission Tariff (OATT) (called the Standard Large Facility Interconnection Procedures), and Attachment Z to the NYISO OATT (Small Generator Interconnection Procedures).

“The NYISO is proposing changes to Attachments X and Z as part of an ongoing effort to improve upon its interconnection study process,” said the filing. “These proposed changes to NYISO’s interconnection procedures relate to the evaluation of increases in the energy capability of existing facilities.”

Currently these kinds of increases trigger the requirement that a developer submit a new Interconnection Request, regardless of how minimal the increase might be. “By revising the tariff to permit limited increases in energy capability of existing facilities without requiring a new Interconnection Request, this proposal eliminates unnecessary interconnection studies,” NYISO added. “It thereby adds efficiencies to the NYISO’s interconnection process and provides added flexibility to existing facilities interconnected to the New York State Transmission System. The NYISO’s proposed revisions to Attachments X and Z also include a number of ministerial revisions.”

Attachments X and Z set forth the detailed procedures for the identification and cost allocation of System Upgrade Facilities required for a project to reliably interconnect to the system and thereby provide Energy Resource Interconnection Service (ERIS). ERIS is basic interconnection service that allows a developer to interconnect its facility to the New York State Transmission System or Distribution System under the NYISO Minimum Interconnection Standard to enable the New York State Transmission System or Distribution System to receive electric energy from the facility.

In addition to ERIS, developers may also elect Capacity Resource Interconnection Service (CRIS). Unlike ERIS, CRIS allows a developer to interconnect its facility to the New York State Transmission System or Distribution System in accordance with the NYISO Deliverability Interconnection Standard, which allows participation in the NYISO’s Installed Capacity market to the extent of the facility’s deliverable capacity. The NYISO’s proposed tariff revisions that are the subject of the Dec. 16 filing relate only to ERIS, not CRIS.

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.