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Teebar battery project moves to construction in Queensland

Teebar battery project moves to construction in Queensland

Built World

Atmos Renewables selects Enerven to build the 400-MW, 1,600-MWh battery storage facility

2 days ago: Enerven appointed as balance of plant contractor

Overview

Updated 1 hour ago

A 400-megawatt battery project in Queensland is moving to construction. Atmos Renewables selected Enerven on October 9 to build the supporting infrastructure for the Teebar Battery Energy Storage System, with site mobilization expected this month.

The project will store 1,600 megawatt-hours of electricity and dispatch it over four hours when demand peaks. It's one of the largest battery projects committed for construction in Queensland. Backed by Australia's Capacity Investment Scheme, it targets commercial operation in late 2028.

Why it matters

Teebar adds four hours of dispatchable storage to Queensland's grid, helping the state integrate more renewable generation as it transitions away from coal.

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Key Indicators

400 MW
Battery capacity
Rated power output of the Teebar BESS.
1,600 MWh
Storage capacity
Four hours of energy storage at full output.
100-150
Peak construction jobs
Estimated peak construction employment at the Teebar site.
$105.4M
Australian and New Zealand procurement commitment
Public commitments tied to the federal Capacity Investment Scheme program.

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Organizations Involved

Timeline

December 2025 2028

6 events Latest: 2 days ago
Tap a bar to jump to that date
  1. Commercial operation target

    Upcoming Milestone

    Teebar BESS targeted to begin commercial operation on the National Electricity Market.

  2. Construction start ceremony

    Upcoming Construction

    Atmos, Enerven, Valo, and Powerlink mark the start of construction at the Teebar site.

  3. Enerven appointed as balance of plant contractor

    Latest Contract

    Atmos selects Enerven to build balance-of-plant works for Teebar BESS.

  4. Valo selected as battery supplier

    Contract

    Atmos selects Valo to deliver the 400 MW / 1,600 MWh battery system for Teebar.

  5. Financial close reached

    Financial

    Atmos reaches financial close on Teebar BESS and Parron Maam Marang wind farm.

  6. Atmos signs ECI agreement with Enerven

    Agreement

    Atmos signs Early Contractor Involvement agreement with Enerven for Teebar BESS.

Scenarios

1

Teebar BESS reaches commercial operation on schedule

Likely Resolves by End of 2028

Discussed by: Atmos Renewables and project stakeholders

Construction proceeds through 2027 and 2028 without major delays. The battery facility, substation, and transmission line are completed, and the project begins dispatching power to the National Electricity Market in late 2028 as planned.

2

Construction delays push Teebar past 2028 target

Possible Resolves by Q2 2029

Discussed by: Not widely predicted; a contingency scenario

Supply chain constraints, weather delays, or grid connection issues push commercial operation into 2029 or later. The project remains viable but misses its target date, similar to delays seen in other Australian grid-scale battery projects.

3

Teebar completes with reduced capacity or scope changes

Unlikely Resolves by Q2 2029

Discussed by: Not widely predicted; a contingency scenario

Technical issues or cost pressures lead to a reduction in the battery's rated capacity or a change in project configuration. The project still operates but at a smaller scale than the planned 400 MW / 1,600 MWh.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

December 2017

Hornsdale Power Reserve (2017)

South Australia's 100 MW / 129 MWh 'Tesla big battery' began operating in December 2017, built in under 100 days. It was the largest lithium-ion battery in the world at the time and was contracted to provide grid stability services.

Then

The battery quickly proved its value, responding to grid frequency events in milliseconds and reducing grid stabilization costs.

Now

It demonstrated that grid-scale batteries could reliably provide frequency control and other services, paving the way for the current wave of large battery projects across Australia.

Why this matters now

Hornsdale showed the technical and market viability of grid-scale batteries in Australia. Teebar is a much larger project built on that foundation, with the Capacity Investment Scheme providing revenue support that Hornsdale lacked.

June 2025

Merredin BESS (2025)

The 100 MW / 400 MWh Merredin Battery Energy Storage System in Western Australia reached financial close in June 2025, becoming the first Capacity Investment Scheme-backed battery to do so.

Then

Merredin demonstrated that the CIS could support battery projects through financial close, providing a template for larger projects.

Now

It established the pipeline for CIS-backed storage projects, with Teebar and others following.

Why this matters now

Merredin is the smaller predecessor in the same scheme. Teebar is four times larger in capacity and shows the CIS scaling up to support major grid storage.

Sources

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