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Bannaby BESS

Welcome to the Bannaby Battery Energy Storage System (BESS) Project website.

Bannaby BESS is a proposed 700 MW long-duration energy storage project located approximately 25 km east of Taralga in the Upper Lachlan Shire. The project will connect to the existing Bannaby 500 kV substation, a key point in the NSW energy system,contibuting to a more reliable, secure and diverse energy system.

Here, you can learn more about our plans and proposals, the planning and assessment process, and how to stay informed or provide feedback as the project develops.

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The project

The project

Site concept schematic
Exeter site layout
Exeter Site Layout

Location

Bannaby (Southern Tablelands), Upper Lachlan Shire, New South Wales

Capacity

700 MW

Land size

13 hectares

Jobs

Creating up to 150 construction jobs, with ongoing operational roles and additional workers for routine on-site maintenance

Operations

The project will operate remotely 24/7 for at least 30 years, with routine on-site maintenance. After construction, all temporary work areas will be rehabilitated

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Project STATUS

Project status

Engagement with the community and key stakeholders began in 2024 and is ongoing.

The project team is currently preparing the Environmental Impact Statement (EIS), which will carefully assess any potential impacts of the project.

Once complete, the EIS will be submitted and made publicly available for review, helping inform the decision-making process.

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PROJECT  TIMELINE

Project timeline

Our project team has undertaken preliminary flora and fauna surveys across the proposal site. Further studies are currently in progress to better understand the site characteristics, potential impacts and determine if mitigation strategies are required.

Ecology
Flooding
Heritage
Landscape
Noise
Transport
December 2024
Community drop-in session
2025
Project assessment commences
2026
Public consultation

Project assessment concludes
2027
Construction (subject to approvals)
2029
Operations (Stage 1)
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Why bannaby

Site selection

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Proximity to infrastructure

The project’s location was selected due to its proximity to the existing 500 kV high-voltage transmission network. With a proposed connection via a short overhead line, the project is well positioned within the NSW energy system.

Regional profile

The project is strategically located between the South West Renewable Energy Zone and the Newcastle and Sydney metropolitan demand centres. This location supports efficient transmission of electricity from where it is generated to where it is needed most.

Site characteristics

The project is located on an existing grazing property, where farming activities will continue alongside the project during construction and ongoing operations.

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Why BESS

Why BESS

Large-scale battery systems contribute to the stability and reliability of our changing energy system. The energy stored in batteries is able to be used quickly and respond to changing conditions.

Typically, battery systems charge during the day when solar energy is plentiful and release the stored energy back into the grid at night.

Balancing supply and demand

Battery systems help bridge the distance between where the electricity is generated and where it is needed most. By storing excess generation and delivering power during peak periods, batteries help optimise the flow of electricity across the national energy network.

Enhancing energy security

Battery systems can adapt to changing energy network conditions within milliseconds which assists to provide a more stable and reliable system.

Supporting a diverse system

The way in which our electricity is generated and consumed is changing. Batteries are an essential part of a more diverse and resilient system that is able to respond to change.

Battery storage supports the reliability and stability of the New South Wales power system, helping ensure a consistent supply of electricity for homes, businesses, and communities.

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ENVIRONMENTAL Excellence

Integrated Ecological Design

Enhanced Biodiversity Design

Building on detailed ecological surveys, our design incorporates features specifically for local wildlife, including water features, nesting boxes, and indigenous wildflower meadows. These enhancements support native species while working in harmony with the site's existing pastoral character.

Natural Site Screening

The site's natural topography and existing vegetation provide effective visual integration within the pastoral landscape. Additional native planting will further enhance the natural screening, particularly along Hanworth Road, minimising visual impact on the surrounding area.

Operational Excellence

Advanced remote monitoring systems ensure optimal performance with minimal physical presence. The facility operates with carefully monitored noise controls, with cooling systems designed to meet appropriate standards and guidelines. Monthly maintenance visits maximise operational efficiency while maintaining minimal local impact.

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Project stakeholders

Stakeholder information

Neighbour and Community Benefits

The project is committed to sharing benefits of the project with our neighbours and wider communities. Some of the benefits will be delivered before and during construction in recognition that construction will impact neighbours and the local community most often.

Suppliers, Industry and First Nations

The development, construction and operation of the projectrequires a workforce that is appropriately located and skilled to deliver theproject safely and efficiently.

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About Us

The Bannaby BESS is being delivered by BW ESS, a global energy storage developer, owner and operator.

BW ESS is a long-term developer, owner and operator of utility-scale battery energy storage projects. The company is headquartered in Zurich and operates across Europe and Australia.

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Contact

Contact us

BW ESS is a long-term owner and operator, focused on building strong relationships with our communities.

We’re committed to open communication and genuine engagement, and welcome your questions or feedback about the Bannaby BESS.

Please feel free to reach out to us:
• Complete the enquiry form
• Call us on 1800 329 172
• Email us at bannaby@bw-ess.com

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