Department of Energy, Utilities and Sustainability NEW SOUTH WALES GOVERNMENT Sustainable Energy Development Office Government of Western Australia
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Buying new Equipment - Worked Example

Make a comparison

Follow these steps:

  1. How many years will your equipment last? - place this value in "Estimated life" box.
  2. How many Watts does the equipment use when in standby mode (i.e."on" but doing nothing useful) and when in operation? Insert in 1. If you have this information in kilowatts, move to the second half of section 1.
  3. How long will the equipment be running per year in standby mode and when in actual operation? Insert in 2.
  4. How much is your organisation paying for electricity? Insert in 3. This could vary between 5-12 cents per kilowatt hour.
  5. What are the average maintenance costs of each piece of equipment? Insert in 3.
  6. What is the purchase price of each product? Insert in 3.

The example calculation below shows that Photocopier B is more energy efficient than Photocopier A. It also shows that whilst Photocopier A is the cheaper option based on initial purchase price, when future running costs are drawn into the equation, Photocopier B is the cheaper option. If both products meet your needs and deliver the same service, then Photocopier B is the better buy.

Buying New Equipment Calculator



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