Frequency Regulation: An Example of Performance & Communication Requirements for an Emerging

Storage Application

IEEE SCC21 Working Group Meeting, Oct. 20, 2011

Charlie Vartanian CVartanian@a123systems.com

IEEE P2030.2 Secretary

What is Frequency Regulation?

Resource under AGC control dispatched by area grid operator proportional to system ACE

graphic from “Frequency Regulation Basics & Trends”, B. Kirby, July 2004

What is Frequency Regulation?

Resource under AGC control dispatched by area grid operator proportional to system ACE

from “Ancillary Services Manual”, NY-ISO, May 2011This reference has useful storage-specific market description.

What is Frequency Regulation?One of the Ancillary Services opened up to 3rd party competitive supply in deregulated markets

FERC Order 890, December 2007

Over 60 MW’s of Energy Storage In Service 2008-present

1 MW PJM

2 MW CAISO

3 MW ISO-NE3 MW ISO-NE

28 MW NYISO

32 MW PJM

CAISO F/R Performance Req’t Basics

from “ISO Generation Monitoring and Control requirements for AGC/Regulating Units” CAISO, 2/2007

CAISO F/R Comm Req’t Basics

from “ISO Generation Monitoring and Control requirements for AGC/Regulating Units” CAISO, 2/2007

CAISO Comm. Timing for F/R

from “ISO Generation Monitoring and Control requirements for AGC/Regulating Units” CAISO, 2/2007

CAISO Unit Data for F/R

from “ISO Generation Monitoring and Control requirements for AGC/Regulating Units” CAISO, 2/2007

Storage Standards Relevance to F/R

Defined specific service, and

Technical requirements largely similar

But…

No consistency in organization and description of technical requirements across markets buying same product across markets buying same product is an inefficiency

Minor variations in technical requirements to meet same output/outcome is an inefficiency

Resource-specific requirements is a barrier