What is Regulation?

Regulation is an ancillary market service provided by resources equipped for automated generation control. These resources are placed under automatic control by ISO New England based on their Regulation Supply Offers, and respond to signals sent every four seconds in order to match minute-to-minute changes in the New England load.

In what document(s) do I find details about the Regulation Market?

Primary provisions for the settlement of the Regulation Market are in included in, but not limited to Market Rule 1 and M-Reg Manual.

Who can expect to incur a Regulation Credit or Charge?


Market Participants with an ownership share in a resource that provides Regulation will receive credits for the service. The Regulation payments to resources include Regulation Service, Time-on-Regulation and Regulation Make Whole Cost Credit.


Charges associated with Time-on-Regulation Credits and Regulation Service Credits are allocated to Participants based on Regulation Obligation. Regulation Obligation is based on Real-Time Load Obligation. Charges associated with Regulation Make Whole Cost are allocated to Participants based on Net Regulation Purchase. Net Regulation Purchase is based on Regulation Obligation, adjusted for Self-Scheduled Regulation.

Related Standard Settlements


Related Billing Adjustments


Bill Detail

The hourly services bill contains a single line item netting charges and credits entitled "Regulation".


Daily Financial Position Report

BL_DAILYPOSITION Daily financial position including all market service settlements and miscellaneous billing adjustments generated on a daily basis; and, issued to all active customers registered as a Participant or Non-Participant.

Regulation Unit Details Report

SD_REGDTLASM Hourly Detail of a Participant's resources' regulation service and credits, issued upon settlement of Market Day.

Regulation Market Report

SR_REGASM SSummary of Participant and Pool Regulation charges and credits by hour, issued upon settlement of Market Day.

Related Calculation Summary

Regulation Calculation Summary


Regulation is reported on the SP_EQR report, available on a monthly basis one month after the given settlement, as referenced in the FERC EQR mapping line items prefaced with the title Regulation.

  Copyright ©2014 ISO New England Inc.