Petya Barzilska is Head of Policy and Research at EIES, leading policy analysis and research since joining the organisation in 2024. Petya has a decade of experience in the fields of political risk, energy policy, conflict, and energy transition risks as an analyst, researcher and risk consultant. Prior to joining EIES, Petya was the Sovereign Research Lead at ISS STOXX, where she led a team of analysts conducting environmental, social, and governance (ESG) sovereign research for sustainable investment solutions and analyses. She has worked on EU trade, energy and security policy, and the implications of geopolitical events on supply chains and energy transition as part of S&P Global Market Intelligence and IHS Markit, providing analysis for stakeholders in the energy, financial, mining, manufacturing and government sectors.