Yolanda Lechón is a Research Professor at CIEMAT and has headed its Energy System Analysis Unit from 2013 till 2025. Her research covers the economic evaluation of the external costs and benefits of energy, the life cycle assessment of energy technologies, extended input-output modelling and energy system modeling. She developed the TIMES model, which we use in LIVEN2, underpinning our exploration of energy scenarios and their integration with life cycle assessment through ENBIOS.