Project Proponent Regional Power Corporation T/A Horizon Power Proposal description Horizon Power proposes to construct and operate the Derby Future Energy System (FES) for energy supply to the town of Derby within the Kimberley region of Western Australia. The proposal comprises ground-mounted solar photovoltaic (PV) system up to 21 megawatts (MW), battery energy storage systems (BESS) up to 10 MW, a new thermal power station up to 8 MW, and a transmission network connection route. The thermal power station will be installed adjacent to the existing power station on Broome Street in Derby. The solar PV and BESS will be installed at either Site A (2.5 km south of Derby) or at Site B (5 km south of Derby). A transmission network connection route will connect the solar PV and BESS to a substation at the existing power station. The transmission network connection will either be an overhead or underground electrical distribution or transmission line and will be up to 8.9 km long. The proposal would include a total disturbance of up to 73.5 hectares (ha) of native vegetation within a 307.3 ha development envelope. Region Kimberley Referred under EP Act s38 Industry sector Power generation Last updated July 07, 2025 Current Status Decision on whether to assess has been published 1. Referral Comment on this referral Derby Future Energy System Referral documentation Referral form (PDF, 307.4 KB) Proposal content document (PDF, 933.37 KB) Supporting document (PDF, 16.75 MB) Biological survey (PDF, 46.95 MB) 2. Decision on whether to assess this proposal Chair's Determination Referral examined, preliminary investigations and inquiries conducted. Proposal not to be assessed under part IV of the EP Act. Advice given (Not appealable) Extract of determination Derby Future Energy System (PDF, 230.54 KB) Preliminary Environmental Factors Social Surroundings Flora and Vegetation Terrestrial Fauna Date published Monday, 7 July, 2025
