We use cookies on our website. A cookie is a small piece of data that a website stores on the visitor’s computer or mobile device.

Types of cookies

In general, there are three different ways to classify cookies: what purpose they serve, how long they endure, and their provenance.

Session cookies – These cookies are temporary and expire once you close your browser (or once your session ends).     
Persistent cookies — This category encompasses all cookies that remain on your hard drive until you erase them or your browser does, depending on the cookie’s expiration date. All persistent cookies have an expiration date written into their code, but their duration can vary.

First-party cookies — First-party cookies are put on your device directly by the website you are visiting.     
Third-party cookies — These are the cookies that are placed on your device, not by the website you are visiting, but by a third party like an advertiser or an analytic system.

Strictly necessary cookies — These cookies are essential for you to browse the website and use its features, such as accessing secure areas of the site.     
Preferences cookies — Also known as “functionality cookies,” these cookies allow a website to remember choices you have made in the past, like what language you prefer, what region you would like weather reports for, or what your user name and password are so you can automatically log in.     
Statistics cookies — Also known as “performance cookies,” these cookies collect information about how you use a website, like which pages you visited and which links you clicked on. None of this information can be used to identify you. It is all aggregated and, therefore, anonymized. Their sole purpose is to improve website functions.     
Marketing cookies — These cookies track your online activity to help advertisers deliver more relevant advertising or to limit how many times you see an ad. These cookies can share that information with other organizations or advertisers.


How are cookies used?

EHO uses cookies to ensure the smooth technical functioning of our website and for anonymised user statistics. When you visit the EHO website, you will be prompted to accept or refuse our cookies. You can change your preferences or delete the cookies stored in your browser at any time.


What cookies do we use?

Strictly necessary cookies:   
These cookies are necessary to ensure smooth functioning of the EHO website.   

Statistics cookies:   
EHO makes use of Matomo (formerly Piwik) analytics to assess how visitors make use of the website. Matomo is an open source web analytics platform. A web analytics platform is used by a website owner in order to measure, collect, analyse and report visitors’ data for purposes of understanding and optimizing their website. This platform enables the protection of end-user personal data thanks to features such as IP address de-identification. The information gathered from Matomo analytics is used to improve the functioning of the website for users. All data collected is anonymised.   

Third party cookies:   
EHO has a Twitter account which is linked to the website. Cookies from this social media account are not present on the EHO website. However, if you choose to click on their links, you will be redirected to their website and subject to their cookie and privacy policies. (For more information: Twitter)


How to control cookies

You can control whether or not to accept cookies on most browsers. For the most frequently used browsers, you can find instructions for configuring cookie settings below:  

Cookie settings in Internet Explorer  
Cookie settings in Firefox  
Cookie settings in Chrome  
Cookie settings in Safari


Contact information

Specific questions or requests for further information on EHO cookie policy can be sent to observatory@clean-hydrogen.europa.eu.