Notice of Expression of Interest for Ergon Energy Retail –Dispatchable Generation and Energy Storage

Ergon Energy Retail (Principal) is the retail subsidiary of Energy Queensland (“EQL”) – Australia’s largest, wholly government-owned electricity company. The Principal sells electricity to more than 750,000 customers across Queensland and is the 4th largest retailer in the National Electricity Market (NEM).

The Principal seeks commercial proposals that provide dispatch rights and/or financial arrangements that replicate storage and fast start generation facilities. The Principal aims to use the Expression of Interest (EOI) process to identify and shortlist proponents with the aim to secure up to 800MW of dispatchable capacity.

The Principal anticipates EOI responses will provide rights to storage and generation facilities either through ‘physically backed’ or ‘virtual’ commercial models, but it is open to alternative commercial models. Where applicable, fuel supply arrangements (e.g. gas) need to be clearly articulated. The Principal prefers physically backed arrangements that assign current and future rights to revenue generated through operation of the underpinning reference project. However, the Principal will also consider virtual proposals.

Facilities of interest are:

• Battery Energy Storage Systems (BESS) – the Principal is targeting 400MW of BESS (minimum 2 hours storage)

• Fast start generation including gas, or Pumped Hydro Energy Systems (PHES) – the Principal is targeting 400MW of capacity

Commercial proposals can be for part, or all of the desired capacity. Reference projects underpinning commercial proposals can be either established and operational or in development but must be in Queensland and connected to the National Electricity Market.

Vendors who wish to be invited to the Expression of Interest must by 3pm (AEST) on Friday 16 January 2026:

1. Review the attached Confidentiality Agreement, complete its company details on page 1 and sign the Agreement on page 5 of the document.

2. Return the signed Confidentiality Agreement in full to chris.skelcher@energyq.com.au with the following details in the email:

a) The email subject should contain the event title 'WS72130556 - Dispatchable Generation and Energy Storage’.

b) The email content must include:

- Request to be invited to the Expression of Interest

- Business legal entity name (as displayed in the Australian Business Number (ABN) lookup)

- ABN

- Registered business street address

- Contact name, phone number and email address

c) Ensure the completed and signed Confidentiality Agreement is attached in full to the email.