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Apsley Battery Energy Storage System

Join us in exploring the Apsley Battery Energy Storage System (BESS) project.

The Apsley BESS is an approved large-scale battery project which will connect to the existing New South Wales (NSW) high-voltage transmission network. The project will deliver 120 megawatts (MW) of power for up to 4 hours that will contribute to a more reliable, secure and diverse energy system.

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The PROJECT

The project

Artist impression

Project details

Battery systems within shipping container.

Connection to the existing transmission line via substation and overhead conductors.

Storage area, internal access tracks, on-site parking, fire water, security fencing, lighting, noise walls and vegetation screening.

Location

The project is located 10 kilometers south of Wellington NSW on a 6ha portion of land that has historically been used for grazing and cropping.

Access

Access to the site will be via a dedicated entrance from the Mitchell Highway.


Operations

The project will be remotely operated for at least 30 years (24/7, 365 days of the year) with regular and routine maintenance performed on site.

After construction is complete, temporary construction and laydown areas will be progressively rehabilitated.

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Project STATUS

Project status

The project was approved in 2023, and detailed design is now under way. Construction is anticipated to commence at the end of 2026 (subject to approval).

In preparation for construction, the project is seeking to increase:
1. The duration of energy storage from 2 to 4 hours.
2. The peak construction workforce from 50 to 100 full-time equivalent workers.
3. The construction duration period from 5 to 18 months.

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PROJECT TIMELINE

Project timeline

All necessary planning, traffic, ecology, heritage and noise assessments were completed and approved in 2023.

In preparation for construction, additional noise, ecology, traffic and heritage studies are being completed to support a proposed modification of the project approval.

2023
Development approved
Q1 2026
Development modification request submitted
Q2 2026
Publication and assessment of application
Late 2026
Construction commencement (subject to approval)
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Why Apsley

Site selection

Proximity

The location of the project was selected for its direct access to the existing high-voltage transmission lines on the site. Direct access to the transmission network reduces the amount of infrastructure needed to connect.

Regional profile

The project is located in a region characterised by high quality solar resources. The project is able to store energy produced during the day which can be used during peak periods in the evening.

Site characteristics

The existing characteristics of the land means the construction of the project can be more efficient.

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Why BESS

Why battery storage

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 change 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.

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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.

Battery storage supports the reliability and stability of the New South Wales power system.

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Community Outcomes

Community benefits

Construction of the project is anticipated to require a workforce of up to will 100 full-time equivalent jobs, many of whom will be locally based.

Funding will be provided to Dubbo Regional Council from the commencement of operations in support of the community.

Funding will be provided to Dubbo Regional Council:

a payment of $120,000 at the commencement of operations

a further payment of $230,000 at the start of the fifth year of operations

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About Us

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

BW ESS is a long-term utility-scale BESS developer, owner and operator. The company is headquartered in Zurich, with a presence in Sweden, the United Kingdom, Spain, Germany, Italy, Sweden and Australia.

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Contact

Contact us

The project is committed to open communication, genuine engagement, and ensuring the community experiences no surprises.

For any questions or enquiries about the project or to register your interest as a supplier, please reach out to us:

• Complete the enquiry form
• Call our team on 1800 329 172
• Email us at apsley@bw-ess.com

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