Nodal Protocol Revision Request
NPRR
Number
DRAFT
Date Posted
NPRR EOC Requirements for Generation Resources Assigned
Title
Regulation Up and Responsive Reserve Services
Draft – For Discussion Purposes Only
Requested Resolution
(Normal or Urgent, and
justification for Urgent status)
Nodal Protocol
Section(s) Requiring
Revision
6.4.3 Energy Offer Curve
(Include Section No. and Title)
This NPRR requires that the Energy Offer Curves submitted by the
QSE for its Generation Resources that are assigned RRS and/or
Reg Up AS Responsibility in the QSE’s COP for the purpose of
meeting the QSE’s Ancillary Service Supply Responsibility for these
Ancillary Services must meet the following requirements:
(i) All energy output from the Generation Resource’s capacity
reserved to provide Reg Up AS must be priced at the SWCAP
in $/MWh; and
(ii) All energy output for the Generation Resource’s capacity
reserved to provide RRS AS must be priced at the SWCAP in
$/MWh.
Revision Description
To accomplish these requirements, this NPRR adds the requirement
that each QSE must, prior to the start of an Operating Period that
includes an Operating Hour during which a Generation Resource is
assigned RRS and/or Reg Up Ancillary Service Responsibility,
assure that a valid Output Schedule or Energy Offer Curve for the
Operating Hour has been submitted and accepted by ERCOT and
that meets the price requirements in (i) and (ii) above.
In other words, the last (price, quantity) pairs submitted by the QSE
on the Generation Resource’s Energy Offer Curve shall be
(SWCAP, HSL −Reg Up Capacity−RRS Capacity) and
(SWCAP, HSL)
where Reg Up or RRS Capacity may equal 0 MW if that AS
Responsibility is not assigned to the Generation Resource. The HSL
value shall be the COP HSL value for each Operating Hour.
The provisions of 6.4.2.4, Output Schedule Validation apply. QSE
updates to an EOC entered at the end of the Adjustment Period
become affective in ERCOT Systems at the next Operating Period.
Therefore, if Reg Up or RRS are moved from one Generation
Resource to another Generation Resource in the QSE's portfolio
NPRR Submission Form 082311
PUBLIC
Page 1 of 3
Nodal Protocol Revision Request
during an Operating Hour, any change to the EOC will be effective in
the next Operating Period.
Reason for Revision
RDTF Action Item 1
Credit Implications
(Yes or No, and summary of
impact)
Business Case
Business Case instructions: To allow for comprehensive NPRR consideration, please fill out the
Business Case section below and provide as much detailed information as possible. Wherever
possible, please include reasons, explanations, and cost benefit calculation pertaining to the
NPRR. Insert additional rows as needed.
Describe qualitative benefits
1
 Examples: regulatory requirement, data transparency enhancement, etc.)
Explain in detail possible benefit calculations to support quantifiable benefits
2
 Example: change is expected to save 50 market participants 25 hours/week at
$65/hour)
Business
Comment on impacts to market segments
3
Case
 Example: potential positive impact to consumer segment in the form of lower
energy prices
4
5
Sponsor
Name
E-mail Address
Company
Phone Number
Cell Number
Market Segment
Market Rules Staff Contact
Name
E-Mail Address
Phone Number
NPRR Submission Form 082311
PUBLIC
Page 2 of 3
Nodal Protocol Revision Request
Proposed Protocol Language Revision
6.4.3
Energy Offer Curve
(1)
A detailed description of Energy Offer Curve and validations performed by ERCOT is in
Section 4.4.9, Energy Offers and Bids.
(2)
For an On-Line RMR Unit, ERCOT, in its sole discretion, shall submit either an Output
Schedule or an Energy Offer Curve considering contractual constraints on the Resource
and any other adverse effects on, or implications arising from, the RMR Agreement, that
may occur as the result of the Dispatch of the RMR Unit. If ERCOT chooses to submit
an Energy Offer Curve instead of an Output Schedule, the Energy Offer Curve must be
based on the RMR Agreement input/output curve and the fuel budget for the RMR Unit.
(3)
For Generation Resources with a Resource Status other than ONTEST, if a valid Energy
Offer Curve or an Output Schedule does not exist for a Resource that has a status of OnLine at the end of the Adjustment Period, then ERCOT shall notify the QSE. Except for
IRRs, QF Resources, and DSRs, ERCOT shall create an Output Schedule equal to the
then-current telemetered output of the Resource until an Output Schedule or Energy Offer
Curve is submitted in a subsequent Adjustment Period.
6.4.3.1
Energy Offer Curve for RRS and Regulation Up AS Capacity
The following applies to Generation Resources that a QSE assigns RRS and/or Reg Up AS
Responsibility in its COP to meet the QSE’s Ancillary Service Supply Responsibility for RRS
and/or Regulation Up AS and includes RRS and Reg Up AS Responsibility assignments arising
as the result of DAM or SASM AS awards or QSE AS self-arrangement.
(1)
(2)
Prior to the end of the Adjustment Period for an Operating Hour during which a
Generation Resource is assigned RRS and/or Reg Up Ancillary Service Responsibility,
the QSE shall assure that a valid Output Schedule or Energy Offer Curve for the
Operating Hour has been submitted and accepted by ERCOT. The Energy Offer Curves
submitted by the QSE for these Generation Resources must meet the following
requirements:
(iii)
All energy output from the Generation Resource’s capacity reserved to provide
Reg Up AS must be priced at the SWCAP in $/MWh; and
(iv)
All energy output for the Generation Resource’s capacity reserved to provide RRS
AS must be priced at the SWCAP in $/MWh.
Item (1) above shall not restrict the ability of the QSE to update the Energy Offer Curves
for its Generation Resources in accordance with these Protocols provided that in those
Operating Hours in which a Generation Resource is assigned RRS and/or Reg Up AS
Responsibility the portion of the Energy Offer Curve reserved for these Ancillary
Services meets the requirements in this section.
NPRR Submission Form 082311
PUBLIC
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