Cookies policy

What are cookies

Cookies are small files or widely used devices that are installed on the user’s browser for the purpose of storing, retrieving, or updating data. They allow the controller of a website to learn about users’ preferences when browsing their website and to personalize the services offered based on those preferences.

Iberdrola Generación Nuclear, S.A. (Sociedad Unipersonal) (here in after, Iberdrola) uses first-party and third-party cookies that allow usage analysis and measurement to ensure that our website functions correctly and to improve our services.

Types of cookies

Depending on who the owner is, cookies can be:

First-party cookies: These are cookies sent to your equipment or device (e.g., computer, mobile phone, or tablet) from a computer or domain managed by a website from which the service requested by you is provided.
Third-party cookies: These are cookies sent to your equipment or device by an entity other than the owner of the website, which processes the information obtained through the cookies.

Depending on their purpose, cookies can be:

Technical cookies: These are essential for a website to function correctly and include basic functionalities such as identifying the session or granting registered users access to restricted areas. For these reasons, technical cookies cannot be disabled.
Statistical cookies: These are cookies that allow us to see how the user interacts with the website, gathering anonymous information while browsing it. The purpose of collecting this information is to introduce improvements to the website based on the analysis of aggregated data.
Preference cookies: These are cookies that allow the website to remember information during your browsing time associated with the way the page behaves or looks, such as your preferred language or the region you are located in.
Marketing cookies: These are used to analyze your behavior while visiting the website and to allow, on an ad-hoc basis, other providers to offer you personalized and relevant advertising based on your browsing profile.

Depending on the amount of time they remain active on your equipment, cookies can be:

Session cookies: These are designed to gather and store data while the user accesses a webpage.
Persistent cookies: These are cookies in which the data remain stored in the terminal and can be accessed and processed for a period defined by the cookie controller, which can range from a few minutes to several years.

Controlling the use of cookies

Through our manager you can allow or block cookies; if you wish to delete cookies that are already established on your terminal, you can do so from your browser. You can find out how to do this by going to your browser’s help menu where the steps to proceed with their deletion are set out. For more information:

Below, we provide information on the main browsers, but in case of doubt, consult your browser’s help menu.

Mozilla Firefox

You can access via the following link:

https://support.mozilla.org/es/kb/habilitar-y-deshabilitar-cookies-sitios-web-rastrear-preferencias

Google Chrome

You can access via the following link:

https://support.google.com/chrome/answer/95647?hl=es-ES

Safari

You can access via the following link:

https://support.apple.com/kb/ph21411?locale=es_ES

Microsoft Edge

You can access via the following link:

Manage cookies in Microsoft Edge: View, allow, block, delete and use – Microsoft Support

Likewise, through our manager you can allow or block cookies.

Cookie Settings

Cookies we use

On this website we respect your privacy by analyzing the quantity and quality of your interactions anonymously. Below, we show the first-party and third-party cookies we use on our website along with a brief description of their purpose, the period they remain on your terminal, as well as an indication of the cookie controller when it comes from a third party other than Iberdrola.

Last cookie analysis performed 2026-09-04.

Technical cookies

Cookie name	Description
uncodeAI.screen	This cookie is used to contain execution information about the viewport and screen resolution; this data is used when refreshing any page to correctly calculate adaptive images.
OptanonConsent	This cookie is set by OneTrust’s cookie compliance solution. It stores information about the categories of cookies used by the site and whether visitors have given or withdrawn their consent for each category. This allows site owners to prevent cookies from a category from being set when consent has not been given. The cookie has a normal duration of one year so that the preferences of returning visitors are remembered. It does not contain information that allows identifying the visitor.
uncodeAI.css	This cookie is used to run the Adaptive Images system and contains execution information about the viewport and screen resolution. This data is used when refreshing any page to correctly calculate adaptive images. These cookies do not store personal information.
uncodeAI.images	The uncodeAI.images cookie is used to store execution information about the viewport and screen resolution, used to correctly calculate adaptive images when refreshing any page.
NSC_wt_mc_jmbqifa40518q0Y-12317	This cookie is associated with Citrix’s Netscaler load balancing service. It is a pattern cookie whose root is NSC_; the rest of the name is an encrypted and unique alphanumeric identifier of the origin virtual server. It is used to ensure that user traffic and data are directed to the correct location when a site is hosted on multiple servers, offering a consistent experience to the end user.
NSC_wt_mc_jmbqifa40518q0Y-12317	This cookie is associated with Citrix’s Netscaler load balancing service. It is a pattern cookie whose root is NSC_; the rest of the name is an encrypted and unique alphanumeric identifier of the origin virtual server. It is used to ensure that user traffic and data are directed to the correct location when a site is hosted on multiple servers, offering a consistent experience to the end user.
OptanonAlertBoxClosed	This cookie is set by websites that use certain versions of OneTrust’s cookie compliance solution. It is set after visitors have seen an information notice about cookies and, in some cases, only when they actively close that notice. It allows the website not to show the message more than once to the same user. The cookie has a duration of one year and does not contain personal information.
_GRECAPTCHA	It is a necessary cookie created by Google reCAPTCHA (and Google Cloud Fraud Defense) to protect websites against spam, abuse, and automated bot attacks.
ak_bmsc	It is a cookie that offers protection against automated traffic.
bm_sv	It is a cookie that differentiates between human users and bots.
bm_mi	It is a cookie that differentiates between human users and bots.

Statistical cookies

Cookie name	Description
_ga_xxxxxxxxxx	Cookie used by Google Analytics to identify and track an individual session on the user’s device.
_ga	Cookie associated with Google Universal Analytics that allows distinguishing unique users by assigning a randomly generated client identifier. It is included in each page request and allows calculating data regarding visitors, sessions, and campaigns used in the website’s analytical reports. Its default retention period is 2 years, although it can be configured by the website owner.
_gid	Cookie associated with Google Universal Analytics that stores and updates a unique value for each page visited.

Marketing cookies

Cookie name	Description
_gat_gtag_UA_nnnnnnnn_n	It is a cookie created and used by Google Analytics to limit the percentage of requests (rate limiting) sent to its servers.
leyCookies	Stores the user’s decision regarding cookies.

If you want to know more about cookies coming from third parties, you can consult their privacy and/or cookie policy through the link referenced in the “origin” column (provided it is a third-party cookie).

To configure or delete cookies, you can do so from your browser if they are not blocked by our own site by following the instructions we specified in the previous section “Controlling the use of cookies”.