It might not be as easy as you'd hope to rebuild. This essay does a good job of explaining why it's probably possible in principle and why in practice it might

It might not be as easy as you'd hope to rebuild. This essay does a good job of explaining why it's probably possible in principle and why in practice it might be quite difficult: https://aeon.co/essays/could-we-reboot-a-modern-civilisation-without-fossil-fuels https://aeon.co/essays/could-we-reboot-a-modern-civilisation... (Incidentally, I highly recommend that author's book _ The Knowledge_, which is a more extended meditation on industrial civilisation and what it would take to reinvent it if we lost it.)