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Data centre PUE calculator

How efficient is your data centre?

Power Usage Effectiveness (PUE) is a standard that many data centres use to measure the energy efficiency of their facility. Put simply, PUE is a ratio of the amount of power needed to run and cool your data centre compared to the power used by the IT equipment within your data centre.

Before you can begin to improve your data centre’s efficiency, you need to understand your current PUE score. Fill in the fields below to calculate your data centre’s PUE.

Use our calculator to understand your current PUE score today and receive advice from our experts on how to improve it.

To achieve maximum efficiency, and keep your energy costs and carbon emissions to a minimum, you should aim to optimise your PUE score by reducing the amount of energy used to do anything other than run your IT equipment.

Step 1: Your current usage

Fill in the fields below to calculate your data centre's PUE.

Step 2: Your contact details

Enter your contact details to get your PUE results

By submitting this form you agree for us to hold the data you have entered on our database. Your data will be held in accordance with our Privacy Policy.

Step 3: View your savings

Based on the information you have given us, we’ve calculated that you could save up to £0 per year*.

You can achieve these savings by making some simple changes to the way you use energy. For expert advice on how to improve your PUE and generate savings, read our dedicated guide. We’ve also sent a copy to your inbox along with your results.

*Based on acheiving a PUE score of 1.2

Your Current PUE


Annual Power Usage (kW/h)


Annual Power Cost (£)


Annual Carbon Footprint (Tonnes)


Talk to our experts today

Our energy efficiency experts have helped data centres across the UK to improve their facility’s PUE score and cut their costs and carbon emissions as a result. If you could use some efficiency advice and support from our experts, call us on 01772 689 250 or email [email protected] today.