28.09.2019 / Press releases
EDL is delivering the Agnew Hybrid Renewable Project, a ground-breaking energy solution for Gold Fields’ Agnew Gold Mine in Western Australia. Once completed, the project will provide the mine with more than 50% renewable energy over the long term, without compromising power quality or reliability. The Agnew Hybrid Renewable Project is Australia’s largest hybrid renewable energy microgrid and the first to utilise wind generation at a mine site. juwi Renewable Energy, the Australian Subsidiary of international project developer juwi is delivering a hybrid solar solution at the Gold Fields (jse:GFI) Agnew Gold Mine project in the Eastern Goldfields region of Western Australia, in agreement with Energy Developments Pty Ltd (EDL). The project consists of a 4 MW Single Axis Tracking PV installation together with cloud forecasting and an advanced microgrid control system to enable integration with the mine off-grid network. Together with the thermal power station, being provided by EDL, the project will supply reliable electricity to the critical and non-critical loads of the mine site. EDL is contracted to deliver this ground-breaking project under a 10-year agreement with Gold Fields in two stages: • Stage 1 is a new off-grid 23MW power station incorporating 16MW gas and 3MW diesel generation and 4MW photovoltaic solar. The power station and solar farm Were completed in July and August 2019 and are delivering electricity. • Construction of Stage 2 is underway and due for completion in 2020. This phase of the project is supported by the Australian Renewable Energy Agency and includes five wind turbines that will generate 18MW, a 13MW/4MWh battery energy storage system and an advanced micro-grid control system. Ultimately the project will comprise an optimised hybrid microgrid consisting of: 18MW through 5 wind turbines; 4MW solar plant (10,000 panels); 13MW/4MWhr battery unit; 16MW gas plant to underpin demand and a 25km gas supply pipeline.
The benefits for Agnew include, ensuring that up to 60% of Agnew’s energy needs come from renewable power, with the potential for 100% renewable energy during periods of high winds. Annual emissions savings of ~40,700 t CO₂-e are estimated. Goldfields cited that a key reason for the investment being that electricity transmission capacity was restricted by existing infrastructure constraints and they were consuming diesel on site to meet additional electricity demand. Strong business signals to decarbonise energy supply were an added incentive.