Do Not Exceed Dispatch (DNE) Project

In this section

Last Update: 6/25/2019

Below, affected ISO customers can learn more about changes to existing systems or procedures related to the DNE Project. This project was one of several that ISO New England has undertaken, in collaboration with stakeholders, for the continued development of the region’s wholesale electricity markets.

See Customer Readiness Project Outlook for more detail on specifically affected customers and systems for this and other major projects.

Project Overview
Required Customer Actions
Customer Training Opportunities
Technical Documentation, Rules, and Procedures
Project Development Materials

Project Overview

Project implemented for wind resources, and functionality available for intermittent hydro resources: 5/25/2016

Project implemented for intermittent hydro resource participation: April 30, 2017

Deadline for Day-Ahead Market participation: May 31, 2019 deadline for operating day June 1, 2019

In March 2015 the NEPOOL Participants Committee supported the ISO’s proposal to address the need for an automated, economic solution for dispatch of wind and intermittent hydro resources. As part of the project:

A new dispatch methodology sets an upper limit of how much generation the system can accommodate from an intermittent power resource. The resource may operate freely between 0 MW and this limit, but must not exceed it. This helps maximize the amount of intermittent generation on the system by accommodating the variable nature of these resources’ fuel.
All DNE dispatchable generators (DDGs) were required to offer into the Day-Ahead Energy Market beginning on May 31, 2019 for the June 1, 2019, operating day to address curtailment prioritization issues.
DDGs must install remote terminal units (RTUs) necessary to automate the determination and communication of real-time telemetered DNE dispatch instructions.The planned implementation for intermittent hydro resources is one year later than that for wind resources to allow for RTU installation.

Required Customer Actions

Affected market participants were required to take specific steps or adapt to changes in ISO Systems, as described below and should be mindful of additional time-bound items, some of which may require customers to take specific steps or adapt to changes in ISO systems both before and after the project implementation date.

Please consider subscribing to Customer Readiness, Market Notices, Information Technology (IT) Notices, and MIS Report Issues to receive notices posted to the ISO calendar for future projects.

TIMING OR DEADLINE	SYSTEM	ACTION OR EVENT
5/31/19	eMarket	Deadline for DDGs with a CSO to offer into the day ahead market was May 31, 2019 for operating day June 1, 2019
5/24/16	RTU	Wind resources: Deadline for installation of required RTUs
5/24/16	CROW	Wind resources: Deadline for resources with a capacity supply obligation (CSO) to begin submitting outage requests into the Control Room Operations Window (CROW) Outage Scheduler application
5/25/16	MIS	MIS report changes go into effect. See more under Technical Documentation, Rules, and Procedures below
April 2017	RTU	Intermittent hydro: Deadline for installation and test of required RTUs
4/29/17	CROW	Intermittent hydro: Deadline for resources with a capacity supply obligation (CSO) to begin submitting outage requests into the Control Room Operations Window (CROW) Outage Scheduler application
4/30/17	Electronic Dispatch (no RTU)	Intermittent hydro power resources without RTUs must receive and respond to electronic dispatch of desired dispatch points

Customer Training Opportunities

The ISO conducted online training and conference call information sessions for affected customers to learn about changes and ask questions in advance of project implementation. Please consider subscribing to ISO Training to receive notices posted to the ISO calendar for future projects.

Conference call invitations for this project were sent directly to the designated contacts for wind and intermittent hydro generation assets.

DATE	EVENT AND SUPPORTING MATERIALS
10/15/15	Project Conference Call #1 with Participants Project Overview Presentation—“DNE Dispatch Highlights”
11/30/15	Project Conference Call #2 with Participants Question and answer presentation
2/22/16	Project Conference Call #3 with Participants Question and answer presentation
5/03/16	Intermittent eMarket Training Session Presentation Recording
5/18/16	Project Conference Call #4 with Participants Implementation plan for 5/25/16 discussed followed by an open question and answer session
6/03/16	Project Conference Call #5 with Participants Open question and answer session

Technical Documentation, Rules, and Procedures

Market participants affected by the project were provided the following documents for specific instructions on completing related tasks or processes and helpful answers to frequently asked questions.

Technical Specifications and Documentation

DOCUMENT	NOTES (if necessary)
System Operations Memo to DE Operations and Training contacts– June 21, 2019	Economic maximum automatic redeclaration process effective July 1, 2019 for intermittent hydro DNE dispatchable generators
eMarket High-Level Changes Effective June 1, 2019	Summary of changes made under the Do Not Exceed (DNE) Dispatch project for DNE Dispatchable generators offering into the Day-Ahead Energy Market for operating day 6/1/2019.
System Operations Memo to Markets Committee – May 13, 2019	Economic maximum automatic redeclaration process effective July 1, 2019 for intermittent hydro DNE dispatchable generators
eMarket User Guide version v.6.1, effective June 1st, 2019	User guide version v6.1 reflecting changes made under the Do Not Exceed (DNE) Dispatch project for DNE Dispatchable generators offering into the Day-Ahead Energy Market for operating day 6/1/2019.
System Operations Memo – February 2, 2017	Do Not Exceed (DNE) dispatch Wind High Limit (WHL) reporting error impacts and resources available to confirm the correct WHL calculation
System Operations Memo – September 14, 2016	Do Not Exceed (DNE) dispatch use of self-reported Wind High Limit (WHL) in the automatic redeclaration calculation of the Economic Maximum (EcoMax) limit beginning November 1, 2016
System Operations Memo – July 6, 2016	Do Not Exceed (DNE) dispatch post-implementation guidance for data submittal and RTU dispatch instructions
System Operations Memo	Operational considerations and preparations for Do Not Exceed (DNE) dispatch implementation
MIS reports	The following reports will be revised 5/25/2016: OI_UNITOPER SD_DANCPCGEN SD_DANCPCPYMT SD_RTNCPCGEN SD_RTNCPCPYMT SD_RTNCPCHS
Wind Integration Data Exchange Specification	These documents are the data exchange specification for the e-terrarenewableplan web service application.
eMarket User Guide	The eMarket system is used to submit day-ahead market data submittals. No DNE-specific changes were required.

Rules and Procedures

DOCUMENT	NOTES (if necessary)
OP 14, Technical Requirements for Generators, Demand Resources, Asset Related Demands, and Alternative Technology Regulation Resources
CROP.34013, Do Not Exceed Dispatchable Generation
CROP.35005, Dispatch Using RTUC and UDS
CROP.36002, Redeclarations
CROP.50005, Capacity Analysis and Morning Report
CROP.36003, Commitment, Decommitment, Self-Scheduling, and Self-Dispatch
CROP.34007, Contingency Analysis
Manual M-11, Market Operations

Project Development Materials

See the April 15, 2015, FERC filing.
Related presentations and other materials can be found on the Variable Resource Working Group page.