Marilena Lazopoulou is a physicist from the University of Athens and holds a M.Sc. in Energy Science from Utrecht University. During the 4 years of experience in TTA, she has developed a turn-key methodology for rural electrification with renewable energy and constructed various simulation tools for grid-connected and autonomous hybrid plants with PV and wind turbines. She participated in the design and is technical expert of the Electricity Dispenser, a smart meter for rural electrification. She has been involved in numerous feasibility studies of grid hybridisation with PV generation in the range of kW up to several MW for autonomous mini-grids and industrial factories. Moreover, she has designed and calculated tariffs for various projects and provided technical assistance for private and public entities. Moreover, she is co-author of the Renewable Energy Mini-Grid Innovation Technology Outlook for IRENA as well as various technical guidelines for CEDRO-UNDP. Since November 2016 she is based in Nairobi, conducting consultancy work and participating in the development of mini-grid projects.