Solar and battery underway in Australia's "largest" renewables microgrid

The plans of Western Australia regional utility Horizon Power to develop what it claims will be Australia’s largest hybrid renewables microgrid are edging closer to completion, after the awarding of the utility-scale solar and battery storage contracts.
The project aims to see the coastal Pilbara town of Onslow – a launching base for the massive Wheatstone LNG project owned by Chevron – powered by at least 50 per cent renewable energy, and likely up to 70 per cent.
The microgrid, once completed in mid-2019, will combine a new 5.25 MW gas-fired power plant, distributed and utility-scale solar, and battery storage, each element of which is being contributed to financially by Chevron.
At the time of the project’s launch in October 2016, then WA energy minister Mike Nahan said it would create “a new era of energy competition and efficiency for households and businesses.”
With the gas fired power station nearing completion, Horizon said on Friday that the contract for the solar farm had been awarded to Complete Power Systems (CPS) National, to be built adjacent to the new power station.
The utility-scale battery, it said, would be built and installed by Contract Power Australia within Horizon Power’s new zone substation, about 3km from the Onslow town centre.
Horizon Power managing director Frank Tudor said the battery would be used to help manage a range of events such as overcast conditions and peak electricity demand, ensuring a smooth supply of power to the Onslow community.
“This is demonstrating our capacity to deliver the safe and reliable integration of renewable energy into our existing systems throughout regional and remote Western Australia,” Tudor said.
“Together with these central energy assets, we’re also developing technology and infrastructure platforms to ultimately enable our customers to easily and efficiently connect, generate, store and sell their own electricity.
“Our DER microgrids will deliver more affordable and sustainable electricity to communities, giving customers more choice over how they receive their energy and greater ability to lower their power bills.”
Finance for the Onslow project has been provided by the WA state government with a significant contribution from the Chevron Wheatstone project, under the terms of its agreement with the state.
Horizon this week confirmed that the Chevron-operated Wheatstone Project had contributed more than $250 million to
social and critical infrastructure projects in Onslow including health, recreation and utilities.
The Wheatstone project, situated around 12km from Onslow, is tapping vast natural gas reserves in the region and has also involved developing two liquefied natural gas (LNG) ‘trains’ to export the product to overseas markets.
Completion of the solar farm and battery storage system is expected in the first half of 2019, Horizon said.