Seeking Accreditation for FCESS

Seeking Accreditation for FCESS

The FCESS accreditation process will differ depending on whether applicants are existing providers of Ancillary Services, or whether they are prospective new providers of FCESS. The respective processes are outlined below.

Existing Providers of Ancillary Services

The accreditation process for non-Synergy Market Participants that are currently certified or contracted to provide Ancillary Services is outlined in Paragraphs 2.2 and 2.3 of the Frequency Co-optimised Essential System Services Accreditation WEM Procedure.

Load Following Ancillary Services, Spinning Reserve and Load Rejection Reserve

Where a Market Participant is a current Load Following Ancillary Services (LFAS) provider, it must apply to AEMO for accreditation of each relevant Facility for Regulation Raise and Regulation Lower.

Likewise, where a Participant is currently contracted to provide Spinning Reserve and/or Load Rejection Reserve, it must apply to AEMO for accreditation of each relevant Facility for Contingency Reserve Raise and/or Contingency Reserve Lower respectively.

The Participant’s request must include details outlined in the Accreditation Form on the WEM Website. AEMO will then determine the accreditation parameters for each Facility with reference to a range of data. In this process, AEMO may request additional information from the Participant, or that the Participant undertake additional testing. If requested, the Participant will be obligated to undertake the relevant testing and provide the results to AEMO.

Once it has sufficient information, AEMO will review the application and determine additional relevant accreditation parameters (e.g. Facility Speed Factor). AEMO must reply to the Participant advising of its determination consistent with the requirements laid out in the relevant WEM Procedure. Subsequently, the Participant will be obligated to submit the final approved Facility accreditation parameters to AEMO by revising and re-sending the application form.

Applications (under paragraphs 2.2.2, 2.3.2 and 2.4.1 of the FCESS Accreditation WEM Procedure) for Transitional Accreditation should be sent to WA.SM.Operations@aemo.com.au.

Prospective New Providers of ESS

The accreditation process for prospective new FCESS providers is outlined in Paragraph 3.1 of the Frequency Co-optimised Essential System Services Accreditation WEM Procedure.

In the future, a Participant may apply to AEMO for accreditation of a Facility to provide one or more Frequency Co-optimised Essential System Services (FCESS).

The Participant must lodge an application in the format detailed in the Accreditation Form on the WEM Website, including the Facility’s proposed FCESS accreditation parameters (for each relevant FCESS) and any available evidence of its ability to meet its Performance Requirements.

AEMO will then determine the capability of the Facility to meet the relevant proposed FCESS Performance Requirements. For each Facility that meets the relevant Performance Requirements, AEMO will then determine the relevant accreditation parameters (e.g. Speed Factor).

As part of this process and where it is deemed necessary, AEMO may request additional supporting information from the Participant, or request testing of its Facility to verify its capability to deliver the relevant FCESS.

Where it is requested to undertake testing by AEMO, a Participant will be obligated to either perform that testing or withdraw its application for accreditation.

In the event that AEMO determines that the capability of the Facility does not meet the relevant Performance Requirements for the relevant FCESS, AEMO will reject the Facility’s application and notify the Participant.

Where AEMO determines that a Facility is capable of meeting the relevant Performance Requirements for a relevant FCESS, AEMO will accept that application and notify the Participant of the results of its determination, including all accreditation parameters for which the Facility may be accredited.

Where a Participant has been notified that its Facility is capable of meeting the relevant Performance Requirements for the relevant FCESS, it will be required to subsequently submit the final approved Facility accreditation parameters to AEMO by adjusting (if necessary) and re-submitting the form.

Applications (under paragraphs 3.1.2 of the FCESS Accreditation WEM Procedure) for Accreditation should be sent to WA.SM.Operations@aemo.com.au.

Applications for RoCoF Ride-Through

Facilities with a RoCoF Ride-Through Capability, i.e. the ability to withstand up to a specified level of Frequency change over 500 milliseconds that is below the RoCoF Ride-Through Cost Recovery Limit, will be deemed causers of the RoCoF Control Service and will need to contribute to recovery of the costs of the service.

The RoCoF Ride-Through Cost Recovery Limit is determined by AEMO in accordance with the FCESS Accreditation WEM Procedure and must be set at least 0.25 Hz over 500 milliseconds higher than the RoCoF Safe Limit (currently 0.25 Hz over 500 milliseconds). It also cannot exceed the RoCoF Upper Limit, which is the worst case RoCoF determined by AEMO in accordance with the FCESS Accreditation WEM Procedure.

AEMO has determined the following RoCoF limits:

RoCoF Upper Limit

RoCoF Ride-Through Cost Recovery Limit

1.5 Hz over 500 milliseconds

0.5 Hz over 500 milliseconds

Participants that wish to have a RoCoF Ride-Through value above the RoCoF Safe Limit must submit a proposed RoCoF Ride-Through value to AEMO along with the required supporting evidence specified in the FCESS Accreditation WEM Procedure.

Supporting evidence must also consider the equipment specified in the RoCoF Ride-Through Sensitive Equipment List, as per the requirements of the FCESS Accreditation WEM Procedure.

AEMO will review the proposed RoCoF Ride-Through value and supporting evidence in accordance with the process specified in the FCESS Accreditation WEM Procedure and will notify the Participant of its determination.

Applications for RoCoF Ride-Through should be sent to WA.SM.Operations@aemo.com.au.

Current FCESS and RoCoF Ride-Through Accreditation Parameters

In accordance with Clause 2.34A.14 of the WEM Rules, AEMO must publish all Facilities that are accredited to provide FCESS and any relevant Ride-Through Parameters. Once Facilities are accredited, that information will be provided here.

Facilities for which AEMO has required Re-Accreditation in accordance with paragraphs 6.1.5 or 6.1.7 of the FCESS Accreditation WEM Procedure will be provided here.

Where Market Participants or Network Operators are required to contact AEMO under paragraphs 8.1.1, 8.1.2, 10.1.1, 10.1.2, 11.2.2 or 11.3.1(c) of the FCESS Accreditation WEM Procedure they should provide relevant information to AEMO by email to WA.SM.Operations@aemo.com.au and include all information required under that paragraph and stating the relevant clause for which that information is provided.

Participants that are unable to meet the voice communication requirements specified in paragraphs 2.5.2, 2.6.2 or 2.7.1 of the Communications and Control Systems WEM Procedure must notify AEMO via the WA.SM.Operations@aemo.com.au mailbox, specifying the clause that is unable to be complied with and the specific reasons. AEMO will review these and confirm acceptance or otherwise with the Participant.

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