Sunstate BESS

Sunstate Battery Energy Storage system

Firm Power is proposing to develop a 120MW/240MWh battery energy storage system (BESS) adjacent to the existing 275kV Blackstone Substation along Swanbank Coal Road in Swanbank, Queensland. The location is approximately 10 kilometres south-east of Ipswich and 45 kilometres south-west of Brisbane.

When operational, the Sunstate BESS will help meet the current and future energy demand needs of Queensland whilst supporting the national energy market transition by:

– Enabling greater amounts of renewable energy to be conveyed to Queensland’s homes and businesses,

– Managing energy peak demand periods without requiring fossil fuel based generation, and

– Offering local electricity grid resilience through stabilisation services such as frequency and voltage control.

The project will generate a range of jobs throughout its construction, procurement, operations and maintenance phases, with indirect impacts extending to local supply chains including accommodation, vehicle servicing, catering and cleaning, tradespersons, tool and equipment suppliers, and many other businesses.


The Sunstate BESS is currently at an early stage of development with land secured, development application lodged and initial phases of grid connection underway. The development phase of the project is expected to be completed in mid to late 2024.


The Project site is within an industrial precinct and serviced by established roadways facilitating easy access.


The Project will involve the installation of the following equipment:

- Batteries in which to store the energy; these look like modular shipping containers.
- Inverters and transformers, that convert the electricity in the batteries into the type of electricity used by our national energy market.
- Electrical switchgear and metering, to ensure the safe operation of the batteries & inverters and ongoing connection of the project to the energy market operator.
- Site administration buildings to ensure amenities for technicians managing the long term operations and maintenance of the project.


The proposed Sunstate BESS project development application has been lodged to Ipswich City Council and the assessment process is underway.

As part of its stakeholder engagement, Firm Power intends to continue consulting the affected community and will take into account their feedback as the development progresses into the later stages, such as construction.

Construction & Operations

Once all necessary approvals, agreements and authorisations have been obtained, construction activities for the Sunstate BESS project is able to commence. The construction of the site is expected to take up to 18 months and involves site preparation, delivery, installation, testing and commissioning stages.

Site preparation includes civil works to make it suitable for the BESS equipment, such as earthworks, drainage and foundations. Following this, electrical equipment such as battery module enclosures, inverters, transformers, switchgear and ancillary systems will be delivered to site, installed and ready for energisation. The last step in construction is the testing and commissioning of the fully coordinated system, where the operability and performance is validated and made ready for regular operations.

The BESS is expected to operate for approximately 20 years. Site activities will generally involve monitoring, testing and maintenance of equipment as well as receipt of deliveries, waste removal and other general site maintenance (such as care of groundcover). The facility will be monitored and controlled remotely with staff and contractors periodically onsite to perform supporting activities.

At the end of the project life, the site will either be reconditioned or remediated. This involves the removal of all above-ground infrastructure and any works necessary to restore the land to a safe, clean and stable state. 


The Sunstate BESS will continue to reform the Swanbank Industrial precinct providing new sustainable technology and create construction jobs, opportunities for local suppliers and ongoing project roles. Firm Power is interested in talking to members of the community who have an interest in energy storage or who would like to discuss education, provision of services or employment opportunities that may exist in the future.

If you have any questions or concerns about the project, or would just like to discuss the project, you can contact our team directly by filling out the following form or calling 1300 521 328.


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