This issue will inform you about our progress in work package 4, which is focusing on sugar to lipid conversion and bio-hydrogen production, coordinated by Aalborg University. In the following sections you can read about results from Luleå University of Technology, Aalborg University and ENORM working on the conversion of waste biomass to lipids by Microalgae, Thraustochytrids and Black Soldier Fly Larvae, respectively. Our review article in Energies MDPI is a great starting point for anyone interested in understanding how to use biogenic sources to produce bio-hydrogen. In the interview with Jane Lind Sam and Dr. Tanmay Chaturvedi you will read what surprised them the most, their motivation, vision for the future and challenges of the project. Last but not least, we will inform you about our latest news: the upcoming project meeting at GreenLab.