Maribor, Slovenia
C4E Forum 2027
The next Central and Eastern European Energy Efficiency Forum, C4E Forum 2027, will take place on 18–21 May 2027 in Maribor, Slovenia.
The C4E 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. For its 6th edition, the Forum returns to the mountains, as it did in Poiana Brașov, Romania, in 2021.
More info soon!
C4E Forum 2025 in numbers
50+
speakers
250+
participants
80%
from CEE
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.
Latest news and updates
Insights and policy developments shaping the CEE energy efficiency agenda
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Understanding Poland’s Building Data Gap
What does Poland’s building stock really look like today and what stands in the way of making buildings warmer, healthier, and more…
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Understanding Romania’s path to building decarbonisation
As Romania moves toward decarbonising its buildings, a clear picture of the current building stock is crucial for planning effective policies and…
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Video interview with Marko Zlonoga
Marko Zlonoga from REGEA – North-West Croatia Regional Energy and Climate Agency interviewed during the C4E Forum2025 in Croatia shared with us…
The previous edition: 20–23 May 2025 in Cavtat, Croatia
The go-to event for EPBD and EED implementation in Central & Eastern Europe
The 5th edition of the unique community-building and networking event on energy efficiency in buildings in Central and Eastern Europe, the C4E Forum 2025, took place on 20-23 May 2025 in the beautiful location of Cavtat near Dubrovnik, in Croatia.
Photo Gallery – C4E Forum 2025
Interview moments from the C4E Forum 2025
Not Your Average
Conference
Our aim is to build and strengthen a community of people working on energy efficiency in buildings across Central and Eastern Europe. Held every two years since 2016, the C4E Forum is now preparing its sixth edition.
But do not just take our word for it. Here is how our participants sum up the C4E Forum:
“The mix of different stakeholders and diverse perspectives is very rich.”
“It gives me great informal environment to build my network.”
“It has unique focus on the CEE region.”
“It is interactive, not just full of frontal presentations.”
Organiser
The C4E Forum is organised by the Renovate Europe Campaign, together with a national co-organiser in each host country. The Campaign became the home of the C4E Forum in April 2022 and continues it as the leading event on energy efficiency in buildings in Central and Eastern Europe.
