Part 3 is not clear regarding energy transition. He talks about actual demand, but we are going all electric (heat pumps, cars, industry...), I don't believe that the superpower (extra electricity available because of over built capacity in order to meet the needs on low capacity days) he talks about will be enough and adequate to power the transition, and it is not always available, so it can mainly be used for long time storage (hydrogen would say Freegrass) or activities compatible with load management.
The risk with the energy transition is the creation of an high demand when renewables are not available, you need to heat your house more when there is no sun outside. Another risk with the concept of local production with local batteries is that they are mostly powered by solar panels, so they might all be empty if there is a longer time without much sun. It is a similar problem that exist with the rainwater-tanks, peak water demand is when people's rainwater-tanks are empty, which unfortunately is when there was no rain for a longer time. There is no doubts that he shows the right way, but it won't be an easy ride like he suggests.
He also never talks about the surfaces that are required to install so many panels. I found other numbers when I calculated the required battery capacity, but it was a long time ago, maybe the situation has changed. Maybe he added a load-management factor on his consumption's numbers.
What is sure is that I might be better off with PV panels than with thermal panels. I didn't take the decision yet, still waiting for the offers, suppliers are very slow.
Right now in Luxembourg, the companies installing PV power, heat pumps and thermal panels are overloaded and have very long delays. That is now the bottleneck.