This case study is part two of a piggery audit conducted showing the electrical energy savings component. Implementation of new LED lights would allow an increase in capital for further efficiency measures and allow the installation of solar.

A Central Queensland farm has the potential to save time and money from an increase in battery storage and installation of 4G remote monitoring on the pumps.

The farm has a potential efficiency gain with the installation of a new solar pump. This case study compares the costs of using the existing generator and complete replacement with a new solar pump and battery backup.

The audit made many recommendations such as a boiler economiser and boiler combustion oxygen levels, voltage optimisation and adjusting feed processing to avoid some heating elements. A number of recommendations had a total annual energy cost saving of over $77,000 with a payback period under the companies’ 3 year payback target. Around $72,000 of extra annual savings may be available through a tariff change.

This audit considered a number of opportunities to reduce heating energy consumption. The case study highlights energy savings of 12% in covering heated hatchery tanks and heat recovery systems with an average payback or around 3.5 years and an annual saving of almost $9,500.

This case studies highlights the energy savings opportunities from audits at a number of pork farms. It highlights potential to reduce lighting energy by 66%, and reducing overall energy by up to 27% with the addition of Solar PV.

This case studies highlights the energy savings opportunities from audits at a number of pork farms. It highlights potential to reduce site heating energy by 66% with an average payback of 4.5 years.

The audits of several meat processors identified a payback of between 3.2 and 4.9 years of adding CO2 heat pumps to replace gas hot water systems. In one case a mixing valve was recommended to one system that was providing higher temperature to return a payback of 1.4 years.

The Audits of several meat processors identified the potential benefits of adding variable speed controls to evaporator fans with temperature control logic allowing the fans to operate at a lower speed with significant electricity savings. The audits have identified some quick wins to reduce costs of refrigeration systems at low cost.