Alessandro Pampado developed comprehensive documentation for the open-energy-transition/pypsa-earth repository, focusing on energy systems optimization models. He authored a new section that explains capacity expansion and economic dispatch, providing clear distinctions between deterministic and stochastic formulations, complete with mathematical examples. Using RST and leveraging his technical writing and documentation skills, Alessandro updated the release notes to reflect these additions. His work addressed onboarding challenges by clarifying complex optimization concepts, thereby supporting faster user adoption and reducing support requests. The depth of the documentation enhanced transparency and reproducibility for energy-system analyses, contributing measurable business value to the pypsa-earth project.