About the Project

The Western Sydney Smart Battery (WSSB) is an energy storage project that will support clean, renewable energy to be supplied to the National Electricity Market whilst maintaining grid stability. It is being developed as a joint venture between Shell Energy and Firm Power and will be located on a 3.35-hectare parcel of industrial land in Penrith, NSW, approximately 55 kilometres west of the Sydney CBD.

The project includes the construction, commissioning and operation of a lithium-ion large scale battery that will store up to 20 MW of power for two hours, with a 40 MWh capacity.

The WSSB will be built adjacent to the existing 11kV Endeavour Energy Penrith Zone Substation, with construction of the project expected to commence in 2022.

Bring About Positive Change

The WSSB will support the storage of clean, renewable energy that will be supplied to the National Electricity Market and will help to maintain stability of the energy grid.

  • Construction of the WSSB will enable the grid to receive rooftop solar and other renewable sources, helping to position Western Sydney as a renewable energy hub.
  • The WSSB is an alternative to constructing a new substation.
  • The WSSB will enable the Western Sydney community to capture opportunities provided by the NSW Electricity Infrastructure roadmap.
  • The Western Sydney Smart Battery will enable the community to capitalise on future opportunities provided by the NSW Electricity Infrastructure roadmap.
  • During construction, the project is expected to generate up to 20-30 jobs, with opportunities for local contractors..
  • Reliability – Utility scale BESS supports a more stable and reliable supply of energy on peak use days.
  • Energy affordability – The ability to store and harness excess solar power places downward pressure on electricity prices for customers. .
  • Low carbon energy options – Battery storage enhances the range of low carbon and energy options available to the community.


Frequently Asked Questions

Western Sydney is experiencing rapid population and commercial growth, which is placing a higher demand on the electricity distribution network in times of peak demand. Planning forecasts anticipate that growth in the commercial and industrial sector will see demand outstrip capacity in Penrith by 2024. Typically, a new substation would be built to meet increased demand, however, battery technology has now advanced to a level where it can be considered an economic solution to manage peak demand events.

Firm Power is an Australian-owned grid flexibility company dedicated to delivering solutions that provide stability to a clean energy driven power system.

Firm Power is committed to using advanced technology to ensure energy supply and demand can be dynamically balanced, creating a more flexible electricity grid and allowing for continued renewable energy integration and power price reduction.

As expert project developers, Firm Power collaborates with investors and vigorously screens technology, integration and delivery partners to ensure that the solutions provided are of the highest quality.

Shell Energy is Shell’s renewables and energy solutions business in Australia, helping its customers to decarbonise and reduce their environmental footprint.

Shell Energy delivers business energy solutions and innovation across a portfolio of electricity, gas, environmental products and energy productivity for commercial and industrial customers, while our residential energy retailing business Powershop, acquired in 2022, serves more than 185,000 households and small business customers in Australia.

As the second largest electricity provider to commercial and industrial businesses in Australia1, Shell Energy offers integrated solutions and market-leading2 customer satisfaction, built on industry expertise and personalised relationships. The company’s generation assets include 662 megawatts of gas-fired peaking power stations in Western Australia and Queensland, supporting the transition to renewables, and the 120-megawatt Gangarri solar energy development in Queensland.

A utility grid scale BESS is a combination of technology comprising hardware and software that enables power system operators to store power from the grid and then discharge that energy at a later time to provide electricity or other grid services when required.

Utility grid scale BESS located in the distribution network can provide similar services as transmission-sited storage, in addition to several services related to congestion and power quality issues.

Placing a utility grid scale BESS near where there is growing demand for power can reduce distribution losses and relieve congestion, helping to defer distribution upgrades. Distribution-level BESS can also provide local power quality services and support improved resilience during extreme weather events.

During the development application approval and consultation process, significant assessment of key areas were reviewed and outcomes incorporated into the project execution stream including:

  • Managing and limiting traffic during construction;
  • Applying appropriate sediment and erosion control practices during construction;
  • Positioning the battery during design to enable other land on the site to be accessible for other future key developments.

The project intends to have as little impact as possible on the existing natural environment, with minimal civil works needed prior to development as there is already a substation on site as well as level ground.

The project intends to have as little impact as possible on the existing natural environment, with minimal civil works needed prior to development as there is already a substation on site as well as level ground.

Want to know more? 

If you would like to contact us, fill out the form below and one of our team members will get back to you or call the project hotline on: 1800 749 832.

If you are calling about an emergency, please call 000.

By load, based on Shell Energy analysis of publicly available data.
2 Utility Market Intelligence (UMI) survey of large commercial and industrial electricity customers of major electricity retailers, including ERM Power (now known as Shell Energy) by independent research company NTF Group in 2011-2021.