Our site uses cookies to improve your experiences of certain areas of the site and to allow the use of specific functionality like social media page sharing. You may delete and block all cookies from this site, but as a result parts of the site may not work as intended. By clicking any link of this page you are giving your consent.

More information   Accept
What are you looking for?

Cookies policy


A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer. The cookies used on smartenergyGB.org are not used to identify you personally.

We use cookies to help identify aspects of your behaviour, for instance what pages you visit. We also look at how you visited the site, for instance with what browser and whether you used a mobile phone or computer. We look at this information to better understand how people use our site, so we can make improvements.

We use the following types of cookies on this website:

FacebookLinked InTwitterWhatsApp

Google Analytics


We use Google Analytics software to collect information about how you use smartenergyGB.org. We do this to help make sure the site is meeting the needs of its users and to help us make improvements. Google Analytics stores information about:

  • The pages you visit on smartenergyGB.org - how long you spend on each smartenergyGB.org page
  • How you got to the site
  • What you click on while you're visiting the site

We don’t collect or store your personal information (e.g. your name or address) so this information can’t be used to identify who you are.

We don’t allow Google to use or share our analytics data.

You can opt out of Google Analytics cookies. An explanation of how to opt out of cookies is detailed at the bottom of this page.

Our introductory message


You may see a pop-up welcome message when you first visit smartenergyGB.org. We’ll store a cookie so that your computer knows you’ve seen it and knows not to show it again.

YouTube videos


We use YouTube to provide videos on some pages of the site. YouTube sets cookies when you visit one of these pages.

You may refuse to accept any of these cookies by activating the setting on your browser that allows you to refuse the setting of all or some cookies. For a guide to disabling cookies, see www.allaboutcookies.org. Unless you have adjusted your browser setting so that it will refuse cookies, our system will issue cookies when you visit the website.

How did we calculate the Power of 10p?


The cost of running any device fluctuates based on the tariff you pay to your energy supplier, the energy efficiency of the appliance and of course the length of time you use it. Your tariff itself will also fluctuate based on your supplier, your package and your location. We have tried to be as standardised as possible in our calculations and in order to do this we chose a standard tariff from the nation’s largest supplier. We also used readily available and widely used appliances. The full details of how we calculated the energy usage these recipes required is as follows:

Tariff choice

The tariff used in the recipes is a national average of the British Gas standard variable rates. It does not include the standing charge which may sometimes be included.


The energy we used is calculated on the following formula:

t = C / (R * P);

  • P is the tariff in pence per kWh
  • R is the power rating of the appliance in kW
  • t is the running time in hours
  • C is the cost in pence