Pille-Riin Aja

Pille-Riin joined SEI Tallinn as the Head of the Climate Systems and Energy Policy Unit in 2026.

She is an environmental economist specializing in energy and climate policy. Pille-Riin holds a PhD in Economics from École nationale des ponts et chaussées (France) and a Master’s degree in Environmental, Energy and Transport Economics from Université Paris-Saclay.

Before joining SEI Tallinn, she worked at CIRED research centre on the assessment of energy and climate policies, with a particular focus on energy efficiency policies in France and across Africa.