How much might you save by using more of your electrical appliances between 10am - 2pm so that they use electricity generated by your rooftop solar? We've put together this very simple calculator. It gives a general idea of the savings you might find from using different appliances.

As all individual circumstances are different and the input power (ie amount of electricity used) by an appliance may vary, this calculator can only be considered as an indicative guide of possible savings you could make.

IMPORTANT: This calculator is not suitable for customers with export limits on their solar system.

About your rooftop solar
c/kWh (inc GST)
c/kWh (inc GST)
c/kWh (inc GST)

0kWh

Appliances you could change to run between 10am to 2pm

Tick the boxes that apply to you:

Pool pump (Energy efficient)
Pool Pump (fixed speed)
Hot water (element)
Hot water (Heat pump)
Clothes Dryer (element)
Dishwasher
Washing Machine
Air conditioner
Oven

0.0

Annual saving by using your rooftop solar

$0.00


Assumptions

  • Pool pump: Energy efficient pool pump uses 400W, a fixed speed uses 1kW for the full four hours
  • Hot water: Element is 1.8kW running for 2 hours, Heat pump is 1kW for 3 hours
  • Clothes Dryer: Single, 1 hour dry daily, 2.4kW rated load
  • Dishwasher: 2 hours daily, 2.4kW rated load
  • Washing Machine: 1 hour, 5 times a week, 500W, warm wash cycle with hot water from tap.
  • Air conditioner: 6kW cooling capacity reverse cycle single-split system, 1 hour during summer weekdays, at full capacity. 1.5kW load
  • Oven: 1 hour, 5 times a week. 3.6kW load

Disclaimer

The above calculator is provided as an indicative guide of possible savings that a typical customer with rooftop solar might be able to achieve by using more electrical appliances between 10am – 2pm.

The calculator uses various assumptions of input power used by electrical appliances and is not tailored to your household situation and the actual input power of the electrical appliances that you own.

Energy Queensland does not guarantee that you will necessarily achieve the level of savings that the calculator shows may be possible and accepts no liability to you in respect of the use you make of the calculator and any subsequent decision you may make to change your electricity usage habits.

Important to note

  1. A solar PV system produces about 4 times the electricity (kWH) of its size (kW). Average daily export is based on customers exporting approximately 55% of their daily generation (if not export limited).
  2. To minimise any use of network supplied electricity and possibly increase your savings, make sure that
    1. the kWh don't exceed what you would export daily, and
    2. the total of the loads (calculated by adding up the input power of each appliance) does not exceed your solar inverter's capacity, or your savings may be less.