
Neoen’s 300 MW facility in Geelong started operation in 2021. Photo: Clean Energy Corporation.
A 300 megawatt battery proposed in West Belconnen will go ahead after winning ACT planning approval, despite concerns about its impact on native woodland and grassland.
French renewables company Neoen Australia proposed the battery energy storage system, known as the Territory Battery, for an 8.9-hectare site next to the Stockdill Substation 3 km from Holt.*
The site was chosen because it allows for direct connection to the substation without the need for transmission lines to cross Stockdill Drive or other properties.
The $375 million facility will help stabilise the electricity grid and provide an uninterrupted power supply to consumers. It will be able to store up to two hours of power in reserve.
It will be 50 MW bigger than Eku Energy’s 250 MW facility at Williamsdale in the south of the ACT, and will operate for 20 years.
The Belconnen project will consist of 244 standalone battery packs and inverter stations, a new electrical substation to be connected to existing substation via a transmission line, a storage warehouse, a construction laydown area, a demountable office, car parking, an access road from Stockdill Drive, two water tanks each with a minimum capacity of 30,000 litres, fencing, landscaping and other associated site works.

A site plan of the Belconnen battery facility. Image: Aurecon.
The DA attracted two representations – one from the Friends of Grasslands that raised concerns about the loss of 6 ha of box gum woodland and mature tree removals, and another from a resident worried about the impact of noise and vibration on birds and animals on the nearby golf course.
But most of the woodland to be cleared is degraded, a mature eucalypt will have to be retained and studies showed any noise or vibration from the project would have little impact on birds or animals.
Neoen will still have to pay for an environmental offset on a rural block in Tuggeranong where box gum woodland and grassland will need to be protected and maintained.
Another condition of the approval is that Neoen mitigate impacts to the pink-tailed worm-lizard habitat, including replacing any disturbed habitat at a ratio of three to one and providing crossings on the access road for the lizards in the form of two wildlife grids if it is sealed or rock sections if gravel.
Neoen will also have to provide an updated tree planting schedule and add two other species to the list.
The project was referred to the Commonwealth under the Environment Protection and Biodiversity Conservation Act and received approval last year.
This project is independent of the Canberra Big Battery project – an ecosystem of batteries across Canberra, including the Williamsdale facility, due to be completed in 2026, as well as smaller and medium neighbourhood batteries.
They will store electricity generated by wind and solar energy. They will be a key part of the transition to a clean energy system and achieve net-zero greenhouse gas emissions in the ACT by 2045.
The ACT has contracted AGL Energy Solutions to install Behind-the-meter (BTM) batteries at 11 government sites. The installation of these batteries is expected to be completed by the end of this financial year.
It has also has partnered with Evoenergy to deliver three neighbourhood scale batteries at Dickson, Casey and Fadden. This project is funded by grants from the Australian Government’s Community Batteries for Household Solar Program and is expected to be completed in 2025.
* This article originally said the Neoen battery was part of the ACT Government Big Battery project. This is incorrect. There is no revenue sharing agreement with the government.