Today I met Jean-Claude who is a physics teacher in Dijon. I asked him all the questions that had come to my mind on the previous days:
- How to calculate the energy consumed by the bike to determine the required surface of solar panels?
- How is solar energy regulated by nature so fluctuating?
He enthusiastically embarked on clever calculations and brilliant demonstrations, which I sometimes only partially understood, but it was so reassuring to meet someone who knows! Someone who dissipates the fog around us! I will leave with answers and full of new questions, particularly on the practical aspects of the implementation of these basic principles. 
Before leaving, Jean-Claude tries my electric-assisted bike. For the photo, he poses near the sign bearing the name of his street: "Path of the solar", I'm on the right track! 
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