Long-Term Reliability and System Strength Services for the North Country

Reliability and System Strength Services for the North Country (Long-Term) - WS5659204351

The Coordinator of Energy has determined, under clause 3.11A.4 of the Electricity System Market (ESM) Rules, to trigger a Non-Co-optimised Essential System Services (NCESS) procurement process by Western Power for Reliability and System Strength Services for the North Country.

The proposed services aim to address reliability and system strength concerns during planned or unplanned outage events affecting one or more 132 kV transmission lines supplying the North Country.

Call for NCESS Submissions

Western Power invites NCESS Submissions from prospective NCESS providers to deliver Reliability Services and/or System Strength Services located in the North Country. The North Country is defined as the area supplied by the Rangeway, Geraldton and Chapman substations.

This tender relates to the Long-Term contract term option (10-25 year terms). Proponents may offer a solution that fully or partially meets the requirements for either service (or both).

Activation requirements, performance measures, preferred connection locations and other technical requirements are set out in the Final NCESS Service Specification.

Please submit NCESS Submissions via VendorPanel no later than 5:00pm (AWST) on 1 February 2027.

Interested NCESS providers should register with VendorPanel to be informed of whether any supporting documentation such as clarifications to questions may be published.

Background information / Compatibility requirements

Refer to these documents:

1. NCESS Final Service Specification – North Country

2. Long-Term NCESS Submission Form – North Country (10-25 year terms)

3. NCESS NC Contract Template v3 (to be provided)

4. Contract Departures Template (to be provided)

Updates made to this request:

Please note: The following attachment has been recently added.

1. Added: NCESS Call for Submission Q & A - North Country.pdf

Please consider this attachment when responding.

Please note: The following attachment has been recently added.

1. Updated: NCESS Call for Submission Q & A - North Country v2.pdf

Please consider this attachment when responding.

Buyer: Western Power

Buyer location: Wellington St, Perth, Western Australia 6000, Australia

VendorPanel reference: VP524329

Buyer's reference: WS5659204351

Opens: Monday 07 September 2026 (W. Australia Standard Time)

Closes: Monday 01 February 2027 05:00 PM (W. Australia Standard Time)

Supplier query cut-off: Monday 11 January 2027 05:00 PM (W. Australia Standard Time)

Expected decision: Friday 02 April 2027 (W. Australia Standard Time)

Categories: Utilities; 1: Electricity

Regions of service: Western Australia; 1: Midlands; All Regions of Service locations are within Australia.

Tender documents: 3

Published on VendorPanel Public Tenders. Documents and responses require free VendorPanel supplier registration.