Case Studies

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Location
  • Atherton Tablelands
  • Border Rivers
  • Cape York Peninsula
  • Central West
  • Darling Downs
  • Dry Tropics
  • Fitzroy
  • Mackay Isaac and Whitsunday
  • Maranoa-Balonne
  • North West
  • South-East
  • South-West
  • Southern Downs
  • Torres Strait
  • Wet Tropics
  • Wide Bay Burnett
Pump Type
  • Booster
  • Bore
  • Centrifugal
  • Diesel Pump
  • Submersible
  • Turbine
Irrigation Type
  • Boom
  • Centre Pivot
  • Drip
  • Flood
  • Hydroponic
  • Micro Irrigation
  • Solid Set
  • Travelling Gun
Technology
  • Air Conditioning
  • Change Irrigation Type
  • Demand management
  • Diesel Pumping
  • Energy Storage
  • Evaporator Fans
  • Fan
  • Gas and Biogas Systems
  • Heating
  • Insulation
  • Irrigation
  • Lighting
  • Power Factor Correction
  • Pump Upgrade
  • Refrigeration
  • Smart Energy Metering
  • Solar hot water
  • Solar Photovoltaic
  • Solar Pumping
  • Tariff
  • Tariffs
  • Variable Speed Control
Year
  • Lowest
  • Highest
CO2 Savings
  • Lowest
  • Highest
Energy Savings
  • Lowest
  • Highest
Fitzroy

Emerald Cotton Farm

Fitzroy

Emerald Cotton Farm

An Emerald irrigated cotton farm could benefit from a recent Energy Savers Audit. This case study details the need to inspect, maintain and repair pumps before potential replacement in order to achieve lower payback periods.

Proposed
76
Energy Savings
28.3
Savings
Darling Downs

Dalby Cotton Farm

Darling Downs

Dalby Cotton Farm

A 220ha irrigated cotton farm could save money and time by implementing recommendations from their Energy Savers Audit. The site produces some Corn, Barley, Wheat and Chickpeas. Three pumps lift water from the creek to three separate centre pivots consuming nearly 110,000 kWh at a cost of $23000. Four potential solar systems were compared with the best payback chosen to offset and reduce consumption below 100,000kWh. As consumption is just over 100MW p.a. both SAC small and large customer tariffs were considered, and a comprehensive analysis shown to minimise operating costs.

Proposed
39.9
Energy Savings
39.7
Savings
Darling Downs

Brookstead Cotton Farm

Darling Downs

Brookstead Cotton Farm

Two stages were removed from a seven-stage pump which reduced the flow rate but improved the combined efficiency by 25%. The pump demand has been reduced by 12kW and even with increased running time, running costs have reduced by $1,200 per year with a payback period under two years.

Implemented
15
Energy Savings
5.4
Savings
Darling Downs

Cecil Plains Cotton Farm

Darling Downs

Cecil Plains Cotton Farm

The Audit recommended a new, smaller pump which increased water flow by 1.1ML/day and improved combined efficiency by nearly 30%. The pump upgrade has been completed by the farmer even though the payback period on energy cost savings alone was estimated at over 9 years.

Implemented
20
Energy Savings
3.8
Savings
Maranoa-Balonne

St George Cotton

Maranoa-Balonne

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. Emission savings have been estimated to be 37.9 t CO2-e.

Proposed
29
Energy Savings
37.9
Savings
Darling Downs

Cecil Plains Cotton

Darling Downs

Cecil Plains Cotton

The irrigation energy audit recommended replacing a 45kW line-shaft pump with a 37kW submersible pump to achieve an 8% energy savings and carbon emission reductions of 5.6 t CO2-e per annum.

Proposed
8
Energy Savings
5.6
Savings
Fitzroy

Emerald Cotton

Fitzroy

Emerald Cotton

An energy audit of the pumping systems recommended replacement with more energy-efficient drive units, upgrading the distribution pipework and replacing pumps. Emission savings have been estimated to be 73 t CO2-e per year.

Proposed
31
Energy Savings
73
Savings