The United Nations Evaluation Group (UNEG) is an interagency professional network bringing together the evaluation units of the UN system, including UN departments, specialized agencies, funds and programmes, and affiliated organizations.The United Nations Evaluation Week 2025 will be held from the 10-14 February and will be hosted at United Nations University Headquarters in Tokyo, Japan. 

During EvalWeek 2025, the IEU will host a half-day Professional Development Seminar "Advancing Impact Evaluation: Challenges, Insights, and Collaborative Solutions." This session will explore the challenges of conducting impact evaluations for climate interventions within the framework of the Green Climate Fund's (GCF) multi-year Learning-Oriented Real-Time Impact Assessment (LORTA) programme. These challenges are not unique to GCF but resonate across the United Nations network and beyond. Participants will have the opportunity to share their experiences, presenting both the challenges and impact evidence from their respective organizations. The session aims to foster peer learning, encourage the exchange of insights, and facilitate discussions on innovative solutions. Additionally, it will provide a platform to identify concrete opportunities for collaboration on impact evaluations. Building on the discussions initiated at the Global Impact Evaluation Forum 2024 in New York, this session seeks to deepen the dialogue and strengthen partnerships for advancing robust impact evaluation practices.