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Case Studies

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Technology
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Mareeba

Mareeba Pawpaw farm

Mareeba

Mareeba Pawpaw farm

An audit recommended reducing the pump size from 45kW to 18kW to reduce water flow rate and friction head losses along with a variable speed drive due to the varying height of irrigation blocks. The farm will reduce pumping costs by nearly $3,200 per year with a payback of just over 4 years. A 15kW solar PV system will save an additional $6,000 per year with a payback of just over 3 years.

Proposed
100
Proposed Energy Savings
Mareeba

Mareeba Citrus and Avocado Farm

Mareeba

Mareeba Citrus and Avocado Farm

The case study provides an estimate of the costs and benefits of replacing a 36hp diesel irrigation pump two options: a mains connected 15kW pump or a 19kW pump powered by a 20kW solar array to get paybacks of 11 or 6 years respectively. The case study also compares the cost for a new pump of a 7.5kW mains connected pump and a 9.5kW pump powered by a 10kW solar array, to find a payback period of less than 1 year. The farmer would save over $77,000 on pumping costs over 10 years by installing solar pumping in both applications.

Proposed
62
Proposed Energy Savings
Mundubbera

Mundubbera Citrus Farm

Mundubbera

Mundubbera Citrus Farm

An audit of a Mundubbera Citrus farm recommended fitting variable speed drives to pumps, and a 30kW solar PV system. The farmer has implemented the findings, reducing the pump size as well, and adding over 80kW of Solar PV to save over $41,000 per year in electricity costs.

Implemented
54
Actual Energy Savings
Cairns

Cairns Cold Store

Cairns

Cairns Cold Store

A Cairns Cold Storage business cut their electricity usage by 30% by upgrading plant and equipment such as efficient chillers and pumps, variable speed drives and smart controls.

Implemented
30
Actual Energy Savings
Burdekin

Lower Burdekin Water

Burdekin

Lower Burdekin Water

See How Lower Burdekin Water Board cut their power consumption by 58,000kWh and demand by 105kVA resulting in annual cost savings of $20,000 or 25% at the Kilrie Gully pump station.

Implemented
40
Actual Energy Savings
Gold Coast

Gold Coast Tiger Prawns

Gold Coast

Gold Coast Tiger Prawns

See how Gold Coast Tiger Prawns saved $40,000 per year in demand charges by fitting Variable Speed Drives to main pumps and the conveyors in the processing plant – as well as Power Factor Correction.

Implemented
19
Actual Energy Savings
Aspley, Brisbane

Aspley Nursery

Aspley, Brisbane

Aspley Nursery

An energy audit for the on-site electricity usage recommended the installation of variable speed controls on pumps, replacement pumps with more energy efficient drive units, hot water system replacement, lighting replacement, air conditioning upgrade options & installation of solar photovoltaic system.

Implemented
28
Actual Energy Savings
St George

St George Cotton

St George

St George Cotton

The irrigation audit identified energy savings of 29% and a payback period of 1.3 years with a change to pump operations, installation of a variable speed drive to a 75kW pump and replacing the pump impellor with a full-size version. The audit also found up to $3,500 in savings available with a change in tariff.

Proposed
29
Proposed Energy Savings
Beaudesert

Beaudesert Turf Energy

Beaudesert

Beaudesert Turf Energy

The irrigation energy audit recommended adding variable speed drives to two dam pumps as they have varying duties in supplying centre pivot irrigators. The audit also recommended upgrading 100mm steel main pipe for transfer pumping to 125mm plastic. These initiatives would result in energy savings of over $41,000 per year and a payback period of around 1.5 years.

Proposed
24
Proposed Energy Savings