What our projects do

Our projects will provide reliable and efficient storage of energy for their regions to support the transition of our electricity network to renewable generation sources

The primary role of our projects is to store energy during periods of surplus electricity generation in the electricity network, and then return that stored energy to the electrical network during periods of high demand.

Additionally, our projects will provide key electricity network services that support the secure and reliable operation of the electricity network for the benefits of consumers and businesses.

Why the electricity network needs battery storage projects

The energy transition involves changing the generation of electricity from fossil fueled to renewable energy. This process is well underway and with a shift in the grid’s dependence from coal fired generation to firmed renewables. The entire coal generation fleet in the National Electricity Market (NEM) is forecast to retire before 2040 (AEMO, draft 2024 Integrated System Plan). Intermittent renewable energy generation such as wind and solar will largely replace the coal generation capacity lost from the grid, however the variability of these renewable generation sources introduces challenges to match energy supply with demand. Battery energy storage systems are essential to the future of the grid to ‘firm’ the intermittent renewable energy generators and store this energy to then be later dispatched flexibly to the grid at the time it is required by energy users.

As well as ‘firming’ Variable Renewable Energy generation, battery energy storage systems can mitigate against price volatility in the energy market by smoothing and stabilizing supply to the grid during periods of peak demand, unexpected outages and the closure of large-scale coal generation.

Local Community and Stakeholders

One of our core objectives for both the Derringullen and Kiar projects is to design, develop and operate the Projects to minimise impacts to the environment and local stakeholders. As we continue ongoing community and stakeholder consultation and advance our environmental studies, we will finalise the detailed design of the Projects with the aim to minimise the project footprint.

Our approach during both the planning and construction phases is to provide positive outcomes for the local community including the creation of employment opportunities and economic benefits.

Providing reliable and efficient energy storage for the Southern Highlands region of New South Wales to support the transition of the electricity network to renewable generation sources

Project Overview

The Derringullen Energy Storage System is located near Yass, in New South Wales. The Project is intended to provide reliable and efficient energy storage for the Southern Highlands region of New South Wales to support the transition of the electricity network to renewable generation sources

The Project involves the construction, operation and decommissioning of a grid scale battery energy storage system with a discharge capacity of approximately 400 megawatt (MW) and storage capacity of 800 megawatt hours (MWh). The project will connect to an existing 330kv transmission line running through the site.

The primary purpose of Derringullen is to store energy during periods of surplus electricity generation in the electricity network, and then return that stored energy to the electrical network during periods of high demand. Additionally, Derringullen will provide key electricity network services that support the secure and reliable operation of the electricity network for the benefit of consumers and businesses. The project also supports the long-term reduction of emissions involved in the electricity generation and distribution network.

In August 2024, the NSW Department of Planning, Housing and Infrastructure issued the Planning Secretary’s environmental assessment requirements (SEARs) for the project. The relevant studies, assessments are stakeholder consultation are now underway in order to prepare the project’s Environmental Impact Statement (EIS). The EIS is anticipated to be ready for submission and public exhibition in 2025.

Project Overview

The Kiar Energy Storage System is located in Kiar, on the New South Wales Central Coast. The Project is intended to provide reliable and efficient energy storage for the Central Coast and Sydney regions of New South Wales to support the transition of the electricity network to renewable generation sources

The Project involves the construction, operation and decommissioning of a grid scale battery energy storage system with a discharge capacity of approximately 1,000 megawatt (MW) and storage capacity of 4,000 megawatt hours (MWh). The project will connect to an existing 330kv transmission line running through the site.

The primary purpose of Kiar is to store energy during periods of surplus electricity generation in the electricity network, and then return that stored energy to the electrical network during periods of high demand. Additionally, Kiar will provide key electricity network services that support the secure and reliable operation of the electricity network for the benefits of consumers and businesses. The project also supports the long-term reduction of emissions involved in the electricity generation and distribution network.

In July 2025, the NSW Department of Planning, Housing and Infrastructure issued the Planning Secretary’s environmental assessment requirements (SEARs) for the project. The relevant studies and assessments, as well as concept engineering development and stakeholder consultation are now underway in order to prepare the project’s Environmental Impact Statement (EIS).

Find out more

For further information including a request to join our mailing list to receive updates and news about our Projects, email us at hello@bidenergypartners.com