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From: "Mereness, Matt" <[log in to unmask]>
Date: Tue, 1 Oct 2019 16:46:39 +0000
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***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. *****

RTCTF,
Friendly reminder of the listing and status of RTCTF key principles in-flight (listed below) for the Oct 9th RTCTF meeting.

Comments and alternatives are due close-of-business tomorrow, October 2.

Key Principle documentation for redlines and comments were posted on Sept 23 to the meeting page for Oct 9, and additional materials will be posted tomorrow.  Calendar page is http://www.ercot.com/calendar/2019/10/9/189276-RTCTF.

Thanks and call or email with any questions,
Matt

Matt Mereness
[log in to unmask]<mailto:[log in to unmask]>
O: 512.248.3089
M: 512.565.8939

From: Mereness, Matt [mailto:[log in to unmask]]
Sent: Monday, September 23, 2019 5:12 PM
To: [log in to unmask]
Subject: RTCTF materials for Oct 9th Meeting (comments due Oct 2)
RTCTF,
We have posted the latest version of the following Key Principle document for the October 9th meeting (http://www.ercot.com/calendar/2019/10/9/189276-RTCTF).

Below are the details for each item to assist in your review of the issues and potential alternatives.

Alternative language is due next Wednesday Oct 2.

Key Principle 1.1: Ancillary Service Demand Curves and Current Market Price Adders
(2)- Pricing run to reliability deployments  (Round 3- confirm consensus and discuss with other RUC/reliability deployment items)
(5)- Disaggregation of ORDC Curve (Round 3- no action needed, consensus on Crescent approach and ready for October TAC)

Key Principle 1.2 - System-Wide Offer Cap and Power Balance Penalty Price
(3)- Price caps for AS (Round 3- Proposals from Crescent and Luminant and look for task force consensus for October TAC)

Key Principle 1.3 - Offering and Awarding Ancillary Services in Real-Time
(1)- Ability for QSE to indicate when AS unavailable in Real-Time (Round 3 No issues to date)
(2)- UFR Load Resources will be able to self-provide RRS UFR and ECRS based on DAM Awards and Trades (Round 3 No issues to date)
(3)- STEC proposal for On-Line Hydro not in ONRR mode (Round 2 Review STEC alternative)
(4)- Combined-cycle frequency responsive AS constraint (Round 2 No issues to date with additional detail from ERCOT on telemetry)
(5)- RTC will not change limits on sub-categories of AS products (Round 3 No issues to date)
(6)- Offline non-spin constraint during start-up (Round 3 Some discussion from Crescent in prior meeting, but no alternatives)
(7)- Quick-start constraint during start-up (Round 3 No issues to date)
(8)- Re-procurement of AS during deployments (Consensus at 9/19 meeting)
(9)- Operator ability to mitigate infeasible AS (Round 3 Minor edits at RTCTF, but no alternatives)
(10)- RTC will leverage AS Offer structure inherited from current structure, including NPRR863  (Round 3 No issues to date)
(11)- AS Offer curve submission will be same as Energy Offer Curve (Round 3 No issues to date)
(12)- Proxy curves for RTC AS
                Significant discussion expected, proposals encouraged
                Prior presentation/comments from TCPA/LCRA and also comments from Trefny
(13)- Proxy curves for AS will not be created for DAM (same as today) (Round 3 No issues to date)

Key Principle 5 (Round 3)
(1)- ASDCs will be used in DAM (Round 3 No issues to date)
(2)- ASDCs in DAM will be same as Real-Time  (Round 3 No issues to date)
(3)- Current DAM Insufficiency Process will be removed (Round 3 No issues to date)
(4)- AS Obligation quantities posted by 06:00 in Day-Ahead become advisory-only number based on the AS Plan (Round 3 No issues to date)
(5)- Minimum AS Obligation quantity will be 0.1 MW (Round 3 No issues to date)
(6)- After DAM is published, updated AS Obligation quantities will be calculated and published based on the actual DAM AS requirement (Round 3 No issues to date)
(7)- Virtual AS Offers- proposed by Morgan Stanley at 9/19 meeting (Round 2  Be prepared to discuss benefits of additional functionality)

See you tomorrow for the ISO Lessons Learned- thanks!
Matt

Matt Mereness
[log in to unmask]<mailto:[log in to unmask]>
O: 512.248.3089
M: 512.565.8939






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