BulEf is an international scientific conference held annually since 2009. It is organized by the Faculty of Electrical Engineering of the Technical University of Sofia and IEEE. Its main topics are:
- The Electricity Sector in the Transformation Process;
- Energy Efficiency and Renewable Energy;
- Lighting;
- Process and Regime Research and Analysis;
- Electrical Engineering Education.
The conference is traditionally held in September. It is attended by professors, PhD students and students from all universities in Bulgaria and abroad with specialties in the relevant thematic areas, as well as representatives of the National Electricity Company (NEC), the Electricity System Operator (ESO), the electricity distribution companies as major players in the production and transmission of electricity in the country.
The papers of BulEF are reviewed by two reviewers and published in the IEEE Xplore Digital Library. The papers are indexed in SCOPUS.