Jacco Heres is a senior Data Scientist at the Dutch DSO at Alliander. His has experience is focused on getting a better understanding of the current and future loads of the grid, using all available data. Together with his colleagues he development a sophisticated bottom up load model of the whole Alliander grid of ~90.000 km, using smart meter and other customer data, machine learning and statistics. In the past he worked on predictive maintenance models for underground cables and joints, and worked on models to quickly examine all the . Besides this he is coordinating the interns and other collaborations between the Alliander Data Science department and knowledge institutes.