Energy monitors: Best Buys 
Thinking of buying an energy monitor? Make sure you choose a Which? Best Buy energy monitor for the best chance of cutting your energy bills.
Only the very best energy monitors can be Best Buys
Take control of your energy bills
We’ve put a variety of energy monitors – including models by Owl, Efergy, Current Cost, Green Energy Options and Eco-eye - through our tough lab tests to see which are best designed to help you reduce your electricity use and your bills.
The best models in our tests proved not only that they could accurately and consistently monitor electricity usage, but they also presented the information in a useful way. Only these top scorers have become Which? Best Buy energy monitors.
What makes a Which? best Buy energy monitor?
Energy monitors need to be accurate and consistent, but because it requires you to change your behaviour in order to cut your energy usage, it also needs to be easy to use and offer usage information in an effective way.
We’ve awarded Best Buys to four top-scoring energy monitors that have proved they can report electricity usage accurately and consistently, as well as presenting the information in a useful and easily understandable way. Consider one of these for your best chances of cutting your energy bills.
In this review you can see which models we rate as Best Buys, plus you can search for an energy monitor that offers particular features - such as allowing you to download your data to a computer, or use individual socket monitors - by using our compare energy monitors tool.
- Reviews of 15 energy monitors.
- 5 Best Buy energy monitors to help you save money
- Reviews of energy monitors from 11 companies.
