Frame

Grid Monitor AI
05/12/2025

Anthony Pataray, from demand integration at ERCOT, led the discussion.
The main focus was to address numerous questions from QSEs about self-provisioning for load resources.
A slide deck was created to explain the workings and reasoning behind self-provisioning for load resources.

Self provisioning allows QSEs to cover their ancillary service position with load resources operating with a UFR.
If a QSE has an obligation, it can telemeter the self-provision amount, ensuring AS obligations are met in real time.
Self provision is distinct from self arrangement.
Currently applies to NCLRs qualified for ancillary services operating with a UFR, specifically RRS UFR, RRS FFR, and ECRS resources with a UFR.
ECRS can also be provided by load resources, whether or not they operate with a UFR.
Telemetered in real time for self provision of AS.
Created in response to market participant concerns to prevent frequent AS reassignments and arming/disarming of UFRs.

Self-arrangement and self-provision are two completely different concepts.
Self-arrangement remains unchanged in RTC+B and applies only to the day-ahead market.
It allows QSEs with an ancillary service obligation to procure ancillary services (AS) on their own, preventing ERCOT from purchasing AS on their behalf.
Self-provision is a new concept that applies solely to the real-time market.
It is done through telemetry and aims to reduce reassignments during real-time operations.
Self-provision allows QSEs to avoid frequent arming or disarming of their relays.

Self-provision is achieved through telemetry points.
The information regarding telemetry points is available on the RTC ERCOT webpage as part of the ICCP change request.
The setup of telemetry points is essential for RTC+B.
The legend in the presentation slide is helpful in understanding the setup.
Telemetry points discussed include self-provided RRS UFR, RRS FFR, and self-provided ECRS, which QSEs must set aside their obligation for.
Existing ICCP from QSEs, including responsibilities and schedules, will be removed.
Resource status changes: Current statuses will be eliminated, except for the red RTC-only resource status.
Shift from ancillary service-based telemetry for resource statuses to ONL and OUTL.
Key takeaway: Self-provision will be a telemetry-based process.

Assumption that all load resources are completely and fully qualified for each entry service.
All load resources are expected to have a standard/acceptable offer.
ERCOT encourages QSEs to always have an offer during RTC.
ECRS awards in scenarios are for ECRS operating with a UFR.

NCLR holds a 15 megawatt RRS AS position, awarded through 10 megawatts in the DAM and 5 megawatts via RRS trade.
Telemetry details include QSE to ERCOT and ERCOT to QSE.
Resource must carry 15 megawatts, with net power flow and MPC set at 15 megawatts, and zero LPC.
Resource status is set to ONL, and UFR needs to be armed as part of validation rules.
Includes self-provided RRS telemetry point and current capability to provide UFR.
SCED awards 15 MW, as SCED respects the 15 MW self-provided RRS and capability.

Scenarios 2 and 3 are similar, except NCLR 2 has 25 MW of RRS, 10 MW of ECRS, with no additional room to provide AS.
NCLR 2 awards 25 MW of RRS, respecting self-provided amount, and 10 MW for ECRS.
Scenario 3: 10 MW RRS, 25 MW ECRS, resource can provide more UFR RRS than self-provided, SCED awards range from 10 MW to 25 MW.
Discussion on pricing for self-provided and real-time offers; ERCOT encourages QSEs to have offers in both day-ahead and real-time.
Real-time offers have prices associated with them; self-provision viewed as price taker in real-time.
Clarification: Day-ahead and real-time markets have distinct prices, and self-provisioning does not automatically get awarded in real-time.
Q&A regarding payment settlement if awarded in day-ahead and self-providing in real-time with different prices.
Outcome: Paid based on day-ahead price, real-time market serves as an imbalance market.
In scenarios where more capability is offered beyond awards, potential to earn additional capacity at real-time pricing.

QSE 1 is awarded 50 megawatts of RRS.
QSE 1 has three load resources with 100 megawatts of capability.
Self provided amount cannot exceed QSE total ancillary service obligation.
NCLR_4 was awarded 30 megawatts due to headroom and capability limits.
NCLR_5 was not awarded RRS as its UFR is disarmed despite showing capability.
NCLR_6 self provides 20 megawatts, showing a capability of 30 megawatts.
Clarification given on self provision vs self arrangement; both are different.
Self provision can be moved in real time to other resources if awarded.
NCLR_3 has capability for additional 15 megawatts after self providing ECRS and RRS.
Clarification on ECRS obligations affecting the self-provided amount for NCLR_3.
Discussion included clarifications on self providing for ECRS related to UFRs.

ERCOT will not eliminate ECRS provided by load resources that are not controlled by high-set under-frequency relays, but they cannot self-provide.
Considering changes to allow non-controllable load resources (NCLRs) to self-provide for non-UFR-enabled ancillary services, including ECRS and non-spin services.
These changes will not be implemented in December with the RTC launch and are planned for post-implementation.
Feedback from the last DSWG is being considered for these potential changes.
Questions can be directed to the ERCOT load resource and SODG email (ERCOTLRandSODG@ercot.com).
RTC+B training resources are available on the RTC training webpage.

Questions about the self-provisioning process, emphasizing the need to ensure telemetry is in alignment when doing self-provisioning.
Clarifications on pricing errors and ensuring the correct load resource entries.
Discussion about resource scheduling and transition within real time.
Clarification on resource prorating during RRS dispatch under self-provision framework.
Explanation of megawatt capabilities and price offerings for real-time markets.
Discussion about ancillary service offers, HSL, and price-taking levels.
Questions about ECRS provisioning without UFR enabled and ensuring day-ahead awards in real time.
Concerns about discrepancies in 4CP calculations and request for a discussion to align understanding.
Further clarification sought on telemetry and offering block structure, especially regarding capability and HSL.
Agreement to follow up on several points and offer detailed examples to resolve discrepancies.
Acknowledgment of ongoing meetings and open invitation for further questions or topics to be discussed in future meetings.