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Who we are

About us

History

Our values

Innovation & leadership

Management team

What we do

build-own-operate

Microgrids

Energy Sources

ESG

Net Zero

Safety and health

Communities

Diversity

Racial Equality

Case studies

Resources

News

Careers

Get in touch

Home

Case Studies

Jundee

Jundee

Northern Star Resources’ Jundee mine is an underground mining operation located in the Northern Goldfields region of Western Australia approximately 45 kms north-east of Wiluna and approximately 520 kms north of Kalgoorlie.

Project Background

Northern Star Resources’ Jundee mine is an underground mining operation located in the Northern Goldfields region of Western Australia approximately 45 kms north-east of Wiluna and approximately 520 kms north of Kalgoorlie.

Northern Star Resources is an ASX listed, global–scale Australian gold producer with world class projects within Australia and North America. The company owns and operates three world class gold production centres in Kalgoorlie, Yandal and Pogo (Jundee, 2022).

Zenith is providing 46.6MW of power generation through the use of natural gas fuelled generators.

Zenith commenced work on the power station in 2016.

Renewable Integration

The project incorporates 17 MW of solar, 24 MW of wind, and a 12 MW/12 MWh BESS. This hybrid system is expected to meet 56% of the project’s energy needs through renewable sources, significantly cutting emissions.

How Zenith is Leading the Sector

Zenith Energy’s renewable energy Power Purchase Agreement (PPA) with Northern Star Resources at Jundee supports the transition to a lower-carbon energy system. Zenith’s innovative renewable energy retrofit has positioned the company as a key player in reducing carbon intensity across the mining sector, further advancing their net-zero milestones.

Installed capacity

  • Thermal: 43 MW through high-efficiency gas generation and diesel
  • Solar:17 MW
  • Wind: 24MW, Consisting of 4 x 6MW Goldwind Turbines with a rotor Diameter of 165M, and a total height of 212M.
  • BESS: 12 MW/12 MWh Battery Energy Storage System
  • Synchronous condensers: No Syncons Installed
  • Renewable energy fraction: The goal is for approximately 55% of the project’s energy needs to be met by renewable energy.

Commercial operation date (COD)

The Original Jundee power station began operations in 2016, with the first hybrid components commissioned in early 2024.

Contract term

Long-term Power Purchase Agreement (PPA) under a Build, Own, operate (BOO) model, recently extended until 2039.

Client’s decarbonisation objective

Northern Star Resources aims to significantly reduce its carbon emissions by incorporating renewable energy sources into the Jundee mine operation. With the addition of wind, solar, and battery storage, the Jundee site will cover 56% of its energy needs with renewable sources. This aligns with Zenith Energy’s goal to reduce its carbon intensity by 20% by 2025, from a 2020 baseline, which includes scope 1, 2, and 3 emissions.

Additional information

Zenith Energy has signed a renewable energy Power Purchase Agreement with Northern Star Resources for the Jundee operation. This PPA will support Zenith Energy’s interim net zero milestones and strengthen its relationship with Northern Star, with the renewable energy retrofit expected to significantly cut carbon emissions and increase the use of renewables at the mine.

PROJECT NAME
Jundee
LOCATION

Northern Goldfields, WA

CLIENT
NSR
CAPACITY
46.6 MW
ENERGY SOURCE
BESS, Diesel, Gas, Solar PV, Wind

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Case Studies

Nova

Nova

The Nova Nickel Mine is located in the Fraser Range, 380 km from the Port of Esperance and was commenced in 2015

Project Background

The Nova Nickel Mine is located in the Fraser Range, 380 km from the Port of Esperance and was commenced in 2015

The operation is 100% owned by IGO, an ASX listed mining and exploration company that produces gold, nickel, and copper operations

Zeniths initial power generation solution at Nova was a 19MW diesel station which included:

  • 5 x 3MW Medium Speed Diesel Generating Sets
  • 3x 1.7 MW High Speed Diesel Generating Sets

Renewable Integration

In 2019 Zenith commissioned a 5.5MW PV solar power station to operate in parallel with the existing 19MW diesel fueled power station at Nova.

The solar power was designed to seamlessly integrate with the existing power station, using a control system designed to maximise the use of renewable energy while providing reliable and consistent power – a testament to the innovation and control systems capability of Zenith Energy’s engineers.

The system uses Zenith’s state-of-the-art cloud prediction and integration technology in order to predict cloud cover events. When large cloud coverage is predicted, the thermal generation is increased to offset the decrease in solar irradiation.

The numbers behind this system:

  • 11GWh per year in the first 3 years of operation
  • 3 million litres less diesel per year
  • 8,100 tonnes per year fewer CO2emissions per annum

How Zenith is Leading the Sector

Zenith and IGO are continuing their efforts to reduce emissions at the Nova operation by optimising the system to enable “Engine Off”.

This innovation will allow for diesel generation to be turned off and replaced with either stored or generated renewable capacity for significant periods during daylight hours. This is an industry first.

To achieve Engine Off, Zenith will install the following:

  • Additional 10.2MW of relocatable solar to enable renewable generation in excess of 100% of site demand
  • BESS system to provide smoothing during clouding events and capture additional solar spill where possible
  • Synchronous Condensers to provide grid forming and reactive support

Installed capacity

  • Thermal: 19 MW via diesel generation
  • Solar: 16 MW
  • BESS: Battery Energy Storage System of 12MW/12 MWh
  • Synchronous condensers: 2 x 2.8MVAr Syncron.
  • ‘Engine Off’ enabled – the ability to operate on 100% renewable energy when conditions allow.

Commercial operation date (COD)

The Original Nova power station began operations in 2015, with the first hybrid components commissioned in 2019.

Contract term

10 Years.

Client’s decarbonisation objective

IGO’s Nova Project aims to reduce its carbon emissions by maximising the use of renewable energy. The hybrid power plant, which enables 100% renewable operation during specific periods, is part of IGO’s broader commitment to sustainability and lowering its environmental impact. This hybrid solution allows the mine to minimise reliance on fossil fuels while enhancing operational efficiency through renewable integration.

“It’s an important next step on the journey to Net Zero. It will set a new industry benchmark in terms of renewable energy integration, and reduction of emissions at mine sites. It sends a message to the industry that powering an entire site 100% with renewables is possible today.”

– IGO Chief Operating Officer, Matt Dusci

Project name
Nova
Location

Fraser Range, WA

Client
IGO
Capacity
35 MW
Energy source
BESS, Diesel, Solar PV

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Case Studies

Daisy Milano

Daisy Milano

On 17 April 2019, Zenith Energy announced it had signed a new Power Purchase Agreement (PPA) with existing customer, Silver Lake Resources, to extend and expand its Build Own and Operate (BOO) power station at the Daisy Milano Gold Mine.

Project Background

On April 17, 2019, Zenith Energy proudly announced the signing of a new Power Purchase Agreement (PPA) with our esteemed partner, Silver Lake Resources. This agreement marks an extension and expansion of our Build Own and Operate (BOO) power station at the Daisy Milano Gold Mine.

Since 2012, Zenith has been providing Silver Lake with BOO remote power, and this new contract solidifies our partnership for an additional 4.5 years. Under the terms of the expanded PPA, Zenith will operate an 18.3MW power station, previously 12MW, comprising 13.2MW of gas-fired production and 5MW of diesel backup generation.

The PPA is scheduled to commence supply in the fourth quarter of 2019, further enhancing our total contracted BOO capacity to approximately 219MW. We consider this announcement a significant milestone for Zenith, reflecting our continued success in securing contract wins and extensions throughout the fiscal year 2019.


Project name

Daisy Milano

Location

50 km south-east of Kalgoorlie W.A.

Client

Silver Lake Resources Limited

Capacity

6.3MW, TOTAL 18.3MW

Fuel source

Gas/Diesel

CONTRACT

BOO

COMMENCEMENT

2019

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Kundana Mine

Kundana Mine

Zenith established the initial Kundana power station to provide prime and standby power to the EKJV East Kundana Joint Venture. This is now under the control of Evolution Mining who also own the Mungari mine which is located600km east of Perth and 20km west of Kalgoorlie in Western Australia (WA).

Project Background

Zenith Energy established the initial Kundana power station to provide prime and standby power to the EKJV East Kundana Joint Venture. This is now under the control of Evolution Mining who also own the Mungari mine which is located 600km east of Perth and 20km west of Kalgoorlie in Western Australia (WA).

Evolution Mining is an ASX listed company with operations in Queensland, New South Wales, Western Australia and Canada.

Zenith Energy is currently providing prime power, up to 8MW, to the Kundana infrastructure.

The power supply commenced since 2017.

Project name
Kundana Mine
Location

Western Australia

Client
Evolution Mining Ltd
Capacity
16.3 MW
Energy source
Diesel

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Halls Creek

Halls Creek

Pantoro’s Halls Creek Project (Nicolsons Gold Mine) is a surface and underground mine located approximately 35 km south-west of Halls Creek in the remote Kimberley region of Western Australia.

Project Background

Pantoro’s Halls Creek Project (Nicolsons Gold Mine) is a surface and underground mine located approximately 35 km south-west of Halls Creek in the remote Kimberley region of Western Australia.

Pantoro is an Australian gold producer with its 100% owned Halls Creek Gold Project in the Kimberley Region of WA being the key operational focus. The project provides the company, a platform for growth through the operation of its first producing gold asset that includes open and underground pit mines along with a modern CIP Processing facility (Pantoro,2022).

Zenith is providing 7.5MW of power generation solution through the use of our diesel generation sets.

The power supply commenced in 2017.

Project name
Halls Creek
Location

Halls Creek, Australia

Client
Pantoro
Capacity
7.5 MW
Energy source
Diesel

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