Every two years, leading experts in building energy efficiency reunite during the Central and Eastern European Energy Efficiency (C4E) Forum. The next edition of the C4E Forum will take place from 18 to 21 May 2027 in Maribor, Slovenia.
In its 6th edition, this unique event for discussing energy efficiency among specialists from different backgrounds will again take place in the mountains, after Poiana Brașov in Romania.
The forum brings together policymakers, experts, businesses and civil society working on energy efficiency in buildings across Central and Eastern Europe, to share what works and to grow a regional community.
Not your average conference
CEE focused
Biennial conference on energy efficiency, with 80% of participants from the CEE region in 2025, and a clear focus on buildings.
Policy-oriented
Discussions and presentations on real and topical policy challenges and solutions with decision-makers and stakeholders.
Network-building
Enabling you to connect with 200+ colleagues from the energy efficiency sector in a unique, attractive setting.
Time-efficient
Two and a half days of interactive sessions and networking opportunities at a convivial venue.
Affordable
A non-profit event at an affordable cost for participants to ensure good attendance.
C4E Forum 2025 in numbers
50+
speakers
250+
participants
80%
from Central and Eastern Europe
20%
policymakers
C4E Champion Award
The C4E Champion Award, presented at the C4E Forum, recognises public officials in Central and Eastern Europe who have made an outstanding contribution to energy efficiency policy in their country or region. Read more about the award and its past champions.
Stay updated
The programme and registration details will be published on the C4E Forum website. Sign up for C4E Forum news to hear when registration opens, and follow #C4EForum2027 on social media.
Organisations that would like to support the forum can become a sponsor.
