Cookie Policy

What is a cookie?

A “cookie” is a file that contains small amounts of information that is downloaded on your computer -or other device- by accessing certain web pages and that gathers information regarding your browsing on the websites. Once downloaded into your device, your browser sends these cookies in subsequent visits to the websites already visited, providing them with information (such as, for example, the browser used, the language selected, the number of times you have visited the page, etc.), in order to facilitate, personalise and make the navigation more effective according to the information provided by cookies.

What type of cookie do we use?

Our website uses cookies to personalise the content and provide you with a customised, efficient browsing. We use cookies to help us to identify your browser and the language that you use, as well as other characteristics of your browsing patterns, with the aim of directing you to the suitable home page and facilitating you the navigation on our website. We use identifiers, such as IP addresses to obtain the number of individual visitors that access to our website, their geographical location, and their usage trends across the different pages that make up the site. In no case shall we use cookies to personally identify the user.

By browsing our website you accept the implementation of cookies, which you can control and administrate using the properties of your browser. Note that removing or blocking cookies may affect your browsing on our website, and it is possible that some functions may not be available and may even disable browsing.

The website uses cookies with different functionalities:

Our website cookies installed on the users’ devices are not everlasting, rather, depending on their functionality, they have a limited permanence: from those cookies that delete themselves at the end of a browsing session, to other cookies that expire after 24 hours, up to the longest lasting cookies which expire 365 days after they were last updated.

The following table displays the first-party and third-party cookies that the website current uses and the purpose for which each one is used:

1f616252c666968921000a2b5ef44e1c At the end of the browsing session    
c48b3f668f69f01659341181a9bb31e8 365 DAYS Users’ preferred language. Impacts on the functionality of the Web
cookieaccept 365 DAYS If users have accepted the cookies Disablement of the browsing on the website
_ga 1 day This type of cookie is associated with Google Universal Analytics- which is an update of the commonly used Google analysis service. This cookie is used to distinguish unique users by assigning them a number as a client identifier. It is included in each website request and is used to calculate visits, sessions and company data for the analytical reports of the website. By defect, they expire after 2 years, but this can be modified by the website owner. Impacts of the functionality of Google Analytics
_gat   This type of cookie is associated with Google Universal Analytics. Pursuant with their documentation, they are used to speed up the ratio of requests, limiting the gathering of data on websites with lots of traffic. They expire in 10 minutes. Impacts on the functionality of Google Analytics
_gid 1 day This type of cookie is associated with Google Universal Analytics. It saves and updates a unique value for each web page visited. Impacts on the functionality of Google Analytics
_streamio_session At the end of the browsing session    
JSESSIONID At the end of the browsing session Platform session cookie with a general purpose. Used on sites written in JSP. It is normally used to maintain the users’ session anonymous for the server. Impacts on the management of users.

This website uses “Google Analytics” analysis cookies, an analytical web service provided by Google, Inc. with registered address in the United States with central headquarters at 1600 Amphitheatre Parkway, Mountain View, California 94043. For the provision of these services, cookies are used which gather the information, including the users’ IP address, which will be transmitted, processed and stored by Google in the terms established on the website, including the possible transmission of said information to third parties for legal reasons or when said third parties process the information on behalf of Google. The configuration of these cookies is predetermined by the service offered by Google, as such we recommend that you check the Google Analytics privacy page to obtain more information regarding the cookies they use and how to disable them, understanding that we are not responsible for the content or veracity of third-party websites.


Users can allow, block or remove cookies stored on their device through the browser setting options on their computer. Please read carefully the corresponding help section on your browser to learn more about how to activate the “private mode” or unblock certain cookies:

Enresa wishes to point out that the variation of cookies that this website handles cannot be related to its management and maintenance. Consequently, reviews are carried out periodically to improve and update Cookies Policy.

Enresa does not assume any liability which may arise from legal or technical problems caused due to non-compliance with the recommendations included in this policy. This communication is made for inform the users and, therefore, it should not be used for any other purpose. Likewise, responsibility for the content and veracity of the privacy policies of third parties included in this Cookies Policy is not assumed.

If you have any question regarding the Cookies Policy outlined in this document, you can contact us at


Enresa can modify this Cookies Policy pursuant to the legislative or regulatory requirements, or in order to adapt that policy according to the instructions given by the Spanish Data Protection Agency. For that reason, users are advised to check this policy regulary.

Fotografía de unas monedas y unas flechas apuntando hacia arriba

Economic and Financial Aspects

Financial system

Enresa, apart from working on the technical aspects of radioactive waste management, administers the economic resources in order to finance all its activities.

A specific system of financing cost to manage radioactive waste has been established regardless of the State’s General Budget with the aim of avoiding high costs in radioactive waste management and dismantling of nuclear facilities.

Following the adoption of the amendment to Additional Provision 6 of Law 54/1997, the Electricity Industry Act, by means of the enactment of Law 11/2009 of 26 October regulating Public Limited Companies quoted on the Property Market, four non-tax public patrimonial benefits were established:

The first benefit covers the costs related to the management of the radioactive waste and spent fuel generated at nuclear power plants that were definitively shut down prior to 1 January 2010, including their dismantling and decommissioning costs, and future costs that were not anticipated during the operation of nuclear power plants or fuel assembly manufacturing facilities which have been definitively shut down, as well as any shortfall in funding that might arise as a result of the shutdown of a facility prior to the time set out in the General Radioactive Waste Plan for reasons beyond the licensee's control. If this type of shutdown should occur by decision of the licensee, they must cover the corresponding sum.

A benefit on each kilowatt hour generated from nuclear energy is levied to cover the costs arising from the management of radioactive waste produced by nuclear power plants and their dismantling.

Costs arising from the management of radioactive waste from the manufacture of fuel assemblies, such as at the Juzbado fuel assembly manufacturing facility in Salamanca, are funded through the payment of a further benefit on each fuel assembly made.

Costs arising from Enresa’s management of radioactive waste from other facilities, such as hospitals or laboratories, are covered by the payment of another benefit by the waste producers on collection of the waste.

All these benefits may be revised annually, by means of a Royal Decree, with an updated financial report on the cost of the corresponding activities set out in the General Radioactive Waste Plan.

Fund for the financing of activities included in the General Radioactive Waste Plan

With this financing model, there is a significant time lag between the raising of resources and their final implementation. For this reason, due to the difference between Enresa’s income and expenditure, the Fund for the financing of activities included in the General Radioactive Waste Plan is established.

This Fund also draws on financial yields obtained from the management of temporary financial investments held by the Fund.

The Fund is primarily constituted of a portfolio of temporary financial investments. This portfolio and its yields are assigned to the financing of the management of radioactive waste.

In accordance with Royal Decree 102/2014 of 21 February on the responsible and safe management of spent nuclear fuel and radioactive waste, the management of financial assets in which the Fund can invest must guarantee absolute security, an adequate return and sufficient availability.

Consequently, the guiding principles of the management strategy for the Fund’s financial investments are as follows:


Credit risk protection, intermediation and safe-keeping, by means of rigorous selection of the entities to whom resources are allocated and entities operating in the financial markets.


The objective of profitability is set out in the financing model for the management of radioactive waste, defined in the successive General Radioactive Waste Plans.


The financing model sets out a clear commitment to very long-term management, intended to reconcile the model’s demands for liquidity with the conditions of the financial markets at any given moment.

The existing regulatory framework, previously mentioned, provides for an official external body, the Monitoring and Control Committee, for the supervision, monitoring and rating of the temporary investments relating to the financial management of the Fund. It is an interministerial body chaired by the Secretary of State for Energy, and which counts among its members the State Controller and Auditor General, the Undersecretary for Economy and Competitiveness, the Secretary General of the Treasury and Financial Policy, the Director General for Energy and Mines and the Deputy Director General for Nuclear Energy. It meets periodically to monitor the implementation of the three guiding principles for management and to establish the investment criteria for the portfolio.

Similarly, and because the Fund’s financial management is of fundamental importance within the management model for radioactive waste, Enresa's Organisation guidelines provide for an internal body, the Investment Committee, whose main task is to analyse and define management policy for the portfolio of temporary financial investments.

In addition, Enresa undergoes the same regular audits as any other company, in compliance with legal and accounting regulations, with its financial statements subject to annual review by external auditors.