The Sustainable Energy Days are designed as part of the European Sustainable Energy Week (EUSEW) to bring various events organised by stakeholders under the EUSEW umbrella. This acknowledgment serves to integrate these events into the EUSEW framework, thereby increasing their visibility and promoting synergy between clean energy individual initiatives and the overarching goals of the European Sustainable Energy Week.
These events can take place anywhere around the world, promoting clean energy and energy efficiency, as well as contributing to the development and/or implementation of climate-neutral solutions or technologies for a community, a business, or industry. In the current context of the energy transition and ongoing work to ensure secure, clean and affordable energy supply, every Sustainable Energy Days initiative is an opportunity to inspire behavioural changes and innovation towards meeting energy and climate goals in the EU and globally.
Sustainable Energy Days will be held between 1 March and 30 June 2026, exploring a variety of topics in sessions of different formats and durations.
You can be creative! A Sustainable Energy Days event might focus on awareness-raising, centre around a specific activity, or highlight a particular technology or policy. It may address a local community or even an entire region. Sustainable Energy Days can take place in public or private buildings, as well as outdoors or online. Past events have been held in locations such as schools, parks, town halls, factories, and conference centres.
In the context of EUSEW 2026 - ‘A clean, secure and competitive Energy Union’ - events showcasing innovative technologies or implementing solutions for competitive, clean and fair energy transition are particularly encouraged.
The Sustainable Energy Days are a key component of the European Sustainable Energy Week (EUSEW) – the biggest annual event dedicated to renewables and efficient energy use in Europe. They highlight the progress made in the field of clean energy at local, regional and national levels.
Organising a Sustainable Energy Days event provides an opportunity to share your ideas and debate solutions with your community, decision-makers, and the public, and to demonstrate how your organisation is actively contributing to achieving the EU’s Clean Industrial Deal.
- By registering your event, it will be prominently featured on the EUSEW website through an interactive map.
- Your event will be announced in a dedicated section of the EUSEW newsletter, which reaches almost 19 000 subscribers.
- Your event will be promoted on the EUSEW website and communication channels as part of the Sustainable Energy Days concept, reaching an audience of approximately 20 000 followers across Facebook and the newly created EUSEW LinkedIn page. While we cannot promote each event individually, you are encouraged to tag us on your accounts so that we can engage with your content.
- You can also promote your event independently by using the branded and editable materials from the Sustainable Energy Days organisers toolkit to spread the word online.
Please note that the branded materials come with guidelines that must be followed. Any misuse of the provided elements may be considered fraudulent and could lead to a review of your event by the European Commission, as well as its possible disqualification as a Sustainable Energy Day initiative. If you are a regular Sustainable Energy Days organiser who has participated in past editions of EUSEW, we advise you to use the newly available materials and discard any from previous editions.
Anyone can organise a Sustainable Energy Day, and it can target any audience as long as the activity clearly highlights the importance of clean energy and energy efficiency and aligns with EUSEW 2026 theme: A clean, secure and competitive Energy Union. A Sustainable Energy Days event can be organised by educational institutions, public bodies, energy agencies, trade or industry organisations, businesses, NGOs, EU project partners, associations or networks, or citizens.
Sustainable Energy Days must:
- take place in March, April, May, or June 2026;
- be held locally;
- be non-profit and freely accessible (have no admission fees); and
- aim to have a minimum of 10 participants.
Sustainable Energy Days may also be part of an existing project, programme, or promotional activity with branding of its own while still participating in this campaign.
To apply for the Sustainable Energy Days, you first need to create an account on the EUSEW website, and then complete the online registration form. The information provided in the form should be in English, even if the event will be conducted in another language.
You may apply to organise more than one Sustainable Energy Days activity. If your event takes place in different locations, you can add them in the form. This will help people locate your events on the interactive map.
Applications for Sustainable Energy Days must be submitted by 24 May 2026 at 23:59 CEST.
While proposed events may take place up to and including 30 June, all registrations must be completed before the application deadline.
Applications for Sustainable Energy Days must be submitted at least three weeks before the proposed event start date. However, early submission is encouraged, as it allows longer promotion of the event on the EUSEW website and communication channels as part of the Sustainable Energy Days concept, if selected. While we cannot promote each event individually, you are encouraged to tag us on your accounts so that we can engage with your content.
It is important to note that the review, acceptance, and publication of applications on the EUSEW website may take up to two weeks.
Sustainable Energy Day organisers whose events have been accepted are requested to send feedback about their events to the EUSEW Secretariat within 14 days following the date of the event. The EUSEW Secretariat will share a link to a form to gather feedback and photos (when possible), to create a Facebook album with a representative image of the event(s) and contribute to its promotion.
Should you have any questions about the Sustainable Energy Days, please do not hesitate to contact the EUSEW Secretariat at energydays
eusew [dot] eu (energydays[at]eusew[dot]eu).