This cookie table has been created and updated by the Cookie Policy - CookieFirst.

Choices about cookies

This website uses a technology called 'cookies'. A cookie is a small amount of data - which often includes an anonymous unique identifier - that is sent to your browser from a website and stored on your device, if your browser settings permit it.

Cookies are used to facilitate your website experience and distinguish you from other users of the website. This helps National Grid to provide you with a good experience when you browse the National Grid website and also allows us to improve our site.

Changing your preferences and browser settings

When you use this website, National Grid may set and access cookies (or have these cookies set and accessed) on your device as described below. If you do not agree to the use of cookies you can adjust your browser settings to reject all cookies. Each browser is different, so you should check the 'Help' menu of your browser to learn how to do this. You can also find more information about cookies and how to disable them at: and Alternatively, you can choose not to use the website.

If you choose to disable cookies by changing your preferences or your browser settings, this website and its features may not work in the same way or produce the same personalised experience. If you delete all of your cookies, you will have to update your preferences with us again. As your settings are specific to your device, if you use a different device, computer profile or browser you will have to tell us your preferences again.

Opt-out schemes

There are opt-out schemes which allow you to opt-out from receiving targeted advertising from third parties who are members of those schemes:

  • Network Advertising Initiative - Please visit
  • EDAA - Please visit for further information

You can find more information about cookies at: and

Use of Cookies

The National Grid website uses the following cookies:

Strictly necessary cookies. These are cookies that are required for the operation of our website. They include, for example, cookies that enable you to log into secure areas of our website.

Analytical or performance cookies. These allow us to recognise and count the number of visitors and to see how visitors move around our website when they are using it. This helps us to improve the way our website works, for example, by ensuring that users are finding what they are looking for easily.

Functionality cookies. These are used to recognise you when you return to our website. This enables us to personalise our content for you and remember your preferences.

Advertisement or targeting cookies. These cookies record your visit to our website, the pages you have visited and the links you have followed. We will use this information to make our website and the advertising displayed on it more relevant to your interests. We may also share this information with third parties for this purpose.

If you choose to reject all cookies, you may not be able to take full advantage of all National Grid offerings. However, many National Grid online services do not require that you accept cookies.

National Grid's use of cookies

When you use this website, cookies are set and accessed by or on behalf of National Grid for a number of purposes, including to:

  • access your information when you 'sign in' to a National Grid website, so that we can provide you with customised content;
  • identify you as a registered user of this website, so that you are able to use the site for its intended purpose(s) without having to re-enter your information each time you do so;
  • keep track of preferences you specify while you are using National Grid's services;
  • estimate and report our total audience size and traffic;
  • conduct research to improve National Grid's content and services; and/or
  • require you to re-enter your National Grid password after a certain period of time has elapsed, to protect you against others accidentally accessing your account contents.

National Grid does use cookies to target advertising and to share information with social networking sites or other services.

Further detail about the exact cookies used on our site, can be found using your Manage preference tool, accessible by using the button at the bottom of this policy

Analytics cookies

In addition, National Grid uses Google Analytics to help analyse how users use National Grid websites. This analytical tool use cookies to collect standard internet log information and visitor behaviour information in an anonymous form. The information generated by the analytics cookie about your use of the website is transmitted to the analytics provider and used to evaluate and compile statistical reports about this use for National Grid.

National Grid will not (and will not allow any third party to) use the statistical analytics tool to track or collect any personally identifiable information about users of our sites, and will not associate any data gathered by means of Google’s statistical tool with any personally identifying information.

More information on the specific analytics cookies used can be found using your Manage preference tool, accessible by using the button at the bottom of this policy.

Changes to this Cookies policy

From time to time we may change this cookies policy. If there is a significant change you will be asked to reconfirm your cookies preferences.

How to contact us

We welcome feedback and are happy to answer any questions you may have about the cookies we use.

Please send any questions, comments or requests for more information to:

The Data Protection Team
National Grid House,
Warwick Technology Park,
Gallows Hill,
CV34 6DA

or email us at [email protected]

This cookies policy was last updated on 09/04/2024