NCESS Network Support Services for South West Interconnected System (SWIS)

### ⚡ Tender Overview: NCESS Network Support Services (SWIS) Western Power is inviting submissions for **Non-Co-optimised Essential System Services (NCESS)** to support the **South West Interconnected System (SWIS)**. This procurement aims to address capacity constraints through innovative **Network Support Services (NSS)**. #### 🎯 Scope and Objectives - **Objective:** Secure service providers capable of delivering energy supply solutions or reducing energy demand at the distribution high-voltage feeder level. - **Goal:** Ensure feeder loading remains within planning limits across multiple locations in the SWIS. - **Service Period:** 1 December 2027 to 31 March 2030. #### 📋 Key Requirements - Proponents must address specific technical requirements and location-based needs as outlined in the *NCESS Final Service Specification*. - Solutions should focus on non-network alternatives to manage capacity constraints. - Bidders must adhere to the provided *NCESS – NSS draft standard contract*. #### 📅 Important Dates - **Tender Open:** 27 May 2026 - **Supplier Query Cut-off:** 17 June 2026 - **Submission Deadline:** 30 June 2026, 5:00 PM (AWST) - **Expected Decision:** 28 July 2026 #### 🔍 Search Keywords #WesternPower #NCESS #NetworkSupport #SWIS #ElectricityGrid #EnergyDemandManagement #RenewableEnergy #UtilityProcurement #WesternAustralia #Infrastructure