Announcement PDF strike@strikeenergy.com.au ABN 59 078 012 745 www.strikeenergy.com.au 1, 40 Kings Park Rd, West Perth WA 6005 South Erregulla Power Station Reaches Mechanical Completion  South Erregulla Power Station achieves mechanical completion.  South Erregulla gas successfully introduced into the facility.  Live commissioning activities underway, enabling integrated testing of plant systems. Strike Energy Limited (Strike - ASX: STX) provides an operational update on the South Erregulla Power Project, which is 100% owned and operated by Strike within L24 in the Perth Basin. Strike is pleased to advise that the South Erregulla Peaking Power Station (SEPP) has achieved mechanical completion, marking a significant milestone in the development of the Company's 85 MW gas-fired peaking power project in Western Australia. Mechanical completion confirms that all major plant and equipment has been installed and construction activities at the power station have substantially concluded. The project has now entered the commissioning phase, which includes the introduction of South Erregulla gas into the facility and the commencement of live commissioning activities to test and verify the integrated operation of the power station's systems and equipment. Construction and commissioning activities associated with network connection infrastructure remain ongoing with the construction of the 1.5km tie-in to the South West Interconnected System (SWIS) now underway. Following completion of Strike's commissioning program, the project will progress through network connection and commissioning processes in conjunction with Western Power and the Australian Energy Market Operator (AEMO) before the facility can commence commercial operations. Commercial operations remain subject to completion of commissioning, energisation and network connection activities. Strike will continue to work closely with Western Power to coordinate Strike’s commissioning activities alongside Western Power planned network shutdowns and associated activities so as to achieve Strike’s target online date of 1 October 2026. ASX: STX The Company Announcement Officer ASX Ltd via electronic lodgement 11th June 2026 Arial view of Carey Road and Kingia North Substations Strike’s Managing Director and Chief Executive Officer, Shelley Robertson, said: "The achievement of mechanical completion represents a major milestone for the South Erregulla Power Station and reflects the significant efforts of our project team and contractors over the construction period. The project now moves into commissioning, where the focus shifts from construction to the safe testing and verification of all plant systems. We look forward to progressing through the commissioning program and continuing to work closely with Western Power and AEMO towards commercial operation of the facility." Once operational, the South Erregulla Power Plant will provide fast-start, flexible gas-fired power generation, supporting system reliability and renewable integration across the South West Interconnected System. The project will provide critical dispatchable generation capacity which will be sold on market, with supplementary revenue to be generated through Western Australia’s Reserve Capacity Mechanism. This announcement is authorised for release by the Chief Executive Officer and Managing Director in accordance with the Company’s Continuous Disclosure Policy. Company Contact Shelley Robertson Strike Energy Limited shelley.robertson@strikeenergy.com.au Important Notices Forward looking Statements Statements contained in this release, including but not limited to those regarding the possible or assumed future costs, projected timeframes, performance, dividends, returns, revenue, exchange rates, potential growth of Strike, industry growth, commodity or price forecasts, or other projections and any estimated company earnings are or may be forward South Erregulla Power Station looking statements. Forward looking statements can generally be identified by the use of words such as ‘project’, ‘foresee’, ‘plan’, ‘expect’, ‘budget’, ‘outlook’, ‘schedule’, ‘estimate’, ‘target’, ‘guidance’ ‘aim’, ‘intend’, ‘anticipate’, ‘believe’, ‘estimate’, ‘may’, ‘should’, ‘will’ or similar expressions. Forward looking statements including all statements in this document regarding the outcomes of preliminary and definitive feasibility studies, projections, guidance on future earnings and estimates are provided as a general guide only and should not be relied upon as an indication or guarantee of future performance. These statements relate to future events and expectations and as such involve known and unknown risks and significant uncertainties, many of which are outside the control of Strike. Actual results, performance, actions and developments of Strike may differ materially from those expressed or implied by the forward- looking statements in this release. Such forward-looking statements speak only as of the date of this document. Refer to the risk factors starting on page 31 of the 2025 Annual Report for a summary of certain general and Strike Energy specific risk factors that may affect Strike Energy. There can be no assurance that actual outcomes will not differ materially from these statements. Investors should consider the forward looking statements contained in this release in light of those disclosures. To the maximum extent permitted by law (including the ASX Listing Rules), Strike and any of its affiliates and their directors, officers, employees, agents, associates and advisers disclaim any obligations or undertaking to release any updates or revisions to the information in this document to reflect any change in expectations or assumptions; do not make any representation or warranty, express or implied, as to the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; and disclaim all responsibility and liability for these forward-looking statements (including, without limitation, liability for negligence). Nothing in this release will under any circumstances create an implication that there has been no change in the affairs of Strike since the date of this document.