Neoen acknowledges the Wilmen Noongar people, Traditional Owners of the land on which Collie Battery will store energy. We pay our respects to their Elders past and present.


The name – Collie – has been given to the project after the town of Collie. Collie is a town in the Southwest region of Western Australia, 213 kilometres south of the state capital, Perth, and 59 kilometres inland from the regional city and port of Bunbury.

The location was selected based on availability of the land, its proximity to the grid, and to the existing industrial area.


The battery will support increased amounts of renewable energy in WA by providing grid services – storing low cost energy when the sun is shining and wind is blowing for releasing at times when its needed most, and through helping to deliver a more secure and modern energy system.

This image shows what our 150MW Hornsdale Power Reserve battery in South Australia looks like.


The Collie Battery is a grid-scale battery that will connect into Western Australia’s electricity grid via the transmission network.

Neoen and Tesla have been long-term partners, having first worked together on the world’s first big battery in South Australia and then on the Victorian Big Battery, Australia’s largest big battery near Geelong.

Stage 1 of the Collie Battery is being installed by UGL using Tesla Megapack technology, which is designed for grid-scale commercial projects. It is a high-density, modular system which can be installed quickly. Each Megapack is pre-assembled with battery modules, bi-directional invertors, a thermal management system, an AC main breaker and controls in one enclosure.

Umwelt’s role

Umwelt are an environmental consultancy who are helping Neoen with environmental and social studies and development approvals for the project. Studies completed or underway are related to water (surface and groundwater), noise, visual, flora and vegetation, bushfire, and traffic.

These studies will be used to ensure the project addresses key environmental and planning needs.


Neoen are leading the way in delivering big batteries in Australia and around the world.

Neoen’s 150MW Hornsdale Power Reserve , more commonly as the ‘Tesla Big Battery’, has been keeping the lights on and electricity costs low for South Australians, since 2017.

Our 300MW Victorian Big Battery, seen here, recently started operating near Geelong and is one of the world’s largest batteries.