Energy Savers
Queensland

Queensland Dairy Farms

Proposed
41
Energy Savings
817
Savings
533,483
Industry
Dairy
Technology
Solar Photovoltaic, Fan, Heating, Lighting, Irrigation, Pump upgrade, Variable Speed Control
Capital Cost
$2,415,715

Summary

This case study summarises the outcomes from audits conducted on 30 Queensland Dairy farms taking part in the Energy Savers Program.

Collectively the total energy consumption consumed from the measured areas on the 30 farms was 2,147,720kWh at an annual cost of $541,937, resulting in emissions of 1,975 tonnes of CO2-e. 

Opportunities:  the main opportunities identified on Dairy farms include 

  • Pumping and Irrigation- Savings from Variable Speed Drive installation, pump replacements and maintenance. Changes to irrigation design and automation. 
  • Heating Ventilation and Cooling (HVAC)– Condensor motor, VSD, ventilation fan and heating upgrades.  
  • Lighting and General- Replacement and retrofitting of lights with LEDs, infrastructure upgrades to facilitate efficiency gains and general management changes. 
  • Solar Systems- Ranging in size from 5-100kW systems. 

Table 1. Technology Recommendations and Savings in the Dairy Industry. 

Recommendation 

Total  Energy Savings (kWh)  Cost Savings ($)  Capital Cost ($)  Average Payback (Years) 

Emission Reduction (tCO2-e) 

Pumping and Irrigation Upgrades 

42  397,599  319,943  1,537,627  5.1 

365 

HVAC  57  350,371  94,715  390,173  4.8 

322 

Lighting and General 

44  91,845  36,437  75,415  2.8 

84 

Solar Systems 

17  48,379  82,388  412,500  6.3 

44 

Total 

160  888,194  533,483  2,415,715  4.7 

817 

Total Recommendations 

665  7,459,015  2,817,342     12,784,670  6.85 

6,862 

 

Table 1 highlights that total energy savings of 888,194kWh were discovered from the audit process.  

Dairy 2

Including production benefits, a saving of $533,483 and estimated 817 tonnes of CO2-e could be avoided per annum. At a capital cost of $2,415,714 the average payback was 4.7 years. 

Additional value adding from the energy audits showed how an increase in water delivery, could increase production and profit with a reduction in energy consumed per unit of output 

 Table 2. Pre and Post Audit Metrics. 

Metric  Pre-Audits  Post- Audits 

Reduction (%) 

Energy Consumption (kWh) 

2,147,720  1,259,526 

41 

Energy Costs ($)  541,937  8,454 

98 

Emissions (tCO2-e) 

1,976  1,159 

41 

 

As installation of the recommendations is made within the industry, measurement and verification will be undertaken, and case studies will be updated to include the actual energy savings. 

 Dairy

Energy Efficiency for your Industry and Business 

An energy audit is a great way for a business to identify the most effective way to cut costs, reduce emissions and boost productivity.  

The audits show that there are significant opportunities in the dairy industry to improve energy efficiency by investigating the irrigation and HVAC systems. A dairy farm in Boonah saves over $ 5,000 per year by improving the efficiency of its irrigation system at a capital cost less than $10,000, to see more details click HERE 

To keep up to date with the changes taking place in the energy space sign up to the e-news HERE 

 

The Energy Savers Plus Extension Program is delivered in by the Queensland Farmers Federation with support and funding from the Queensland Department of Energy and Public Works.  

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