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Joined 2 years ago
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Cake day: June 16th, 2023

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  • 1 - les installations solaire sur les parkings sont déjà généralisées. Depuis une loi de 2023 les parkings extérieurs au delà d’une certaines surfaces doivent etre recouvert d’ombrieres photovoltaïques.

    2 - il y a une énorme différence entre produire une peu d’électricité pour réduire la facture et couvrir 100% de la consommation électrique. La question est toujours la même, comment on fait quand il n’y a pas de soleil ? Comme en hiver par exemple ? On brûle du charbon, du gaz, de la biomasse ? Les batteries ca va pour quelques heures.

    Ce n’est pas insurmontable comme problème mais c’est beaucoup plus complexe que juste mettre des panneaux partout où on peut en mettre.

    J’invite a aller jeter un coup d’œil sur cette carte: https://app.electricitymaps.com/map/zone/FR/5y/yearly

    Sur cette carte on voit que les seuls pays/régions qui arrivent vraiment à avoir une électricité decarboné (moins de 50gCo2/kWh en moyenne a l’année) sont les pays qui ont énormément d’hydroélectricité et/ou de nucléaire.

    Pour l’instant aucun pays/région n’a réussi a réellement decarbonner sa production électrique grâce au photovoltaïque. Et pourtant ce n’est pas faute d’essayer. En terme de capacité l’Allemagne a 100GW de solaire et 73 GW d’éolien contre “seulement” 61GW de nucléaire en France. Malgré ça l’électricité allemande émet toujours 10 fois plus de CO2 que l’électricité française.









  • This hit me hard ten years ago.

    I’ve always been fascinated by space, as a teenager I wanted to be an astrophysicist, in my early twenties I fully believed Thant humanity was going to explore the solar system and that it would start happening in my lifetime.

    I was studying mechanical engineering and I did everything I could to work in aerospace: picked the right specialities, I got two master of mechanical engineering specialized in aerospace manufacturing (France and Czech Republic). I worked in the manufacturing of critical parts of Arian’s rocket engine and designed new manufacturing technique for future aircraft engine parts.

    I was working towards one goal: being part of the people who will build the spacecraft that will explore the solar system, maybe even be in one.

    Then in 2015 after few years working this hit me, I realized all that was never going to happen. Instead of witnessing the exploration of the solar system I am going witness the collapse of it thermo-industrial civilization.

    We are running out of resources and energy to maintain the growth of it civilization, so we will witness a slow rise of fascism and extreme as countries start fighting for resources. My dream was to go in space in a few decades, now I realized that I’ll consider myself extremely lucky if I have enough for and water to survive in a few decades.







  • I’m still sour about the fact that the expensive Bosch electric bike my wife bought 6 years ago is now e waste because the motor stopped working and display an error. Other than that all the mechanical aspect of the bike is still in perfect state. The gravel with a steel frame I bought at the same time is still as good as new.

    I brought it to repair but basically every shop told me that they are not allowed to open the Bosch motor, the only thing they can do is send it to Bosch SAV, which they did, the SAV responded that the motor was shot but they could send a new one for 750€.

    So I don’t even know what is wrong with the motor but I need to spend 750€ + the cost of assembly by the bike shop and hope that this solves the issue, that the issue is not in the battery.

    So we got a new cargo bike to carry our newly arrived kids but this time we got a non-electric bike as a base and our local bike shop added an electric motor to it. The motor is repairable with simple tools, we can replace it with a motor from another brand, the battery is standard and if we want to remove the motor we still have a fully functional bike. This way I know the bike will still be usable in 30 years if needed.