If we had to start from that point again, there still would be lots of coal, but mostly not in places that are as easily accessible as what was there in the 1800s. If you have to manually dig a few hundred meters down to even reach coal, and (likely) wouldn’t even know where to dig, would you even consider starting digging?
Oil and gas similarly would be problematic. There’s very little at or near the surface left.
So, likely, the jump would have to be from wood to wind, solar or nuclear.
"By 1856, the average depth in the Borinage was 361 meters (1,184 ft), and in 1866, 437 meters (1,434 ft) and some pits had reached down 700 to 900 meters (2,300 to 3,000 ft); one was 1,065 meters (3,494 ft) deep, probably the deepest coal mine in Europe at this time."
"thanks to the good pumping system" (guess what powers that) and "by the late 19th century the seams were becoming exhausted" indicate the practical limitations faced by that.
Is there, though? Perhaps discovering electricity (I.e. electric generator and motor) inevitably leads to industrialization. We don't know, since we invented both complex water-powered textile machines and steam engines well before we invented electricity, so we don't really know how a complex medieval society would have reacted to it.
Also, if civilization collapses it's still fairly likely that a powerdrill will survive (not necessarily functioning, but intact enough that people will look at it and play with copper spirals). Actually, so will internal combustion engines probably, although that won't do much without the requisite metallurgy.
Before we started using coal as an energy source, wood was a popular source, but that was far from sustainable. See for example the graph in https://en.wikipedia.org/wiki/Forestry_in_the_United_Kingdom...
If we had to start from that point again, there still would be lots of coal, but mostly not in places that are as easily accessible as what was there in the 1800s. If you have to manually dig a few hundred meters down to even reach coal, and (likely) wouldn’t even know where to dig, would you even consider starting digging?
Oil and gas similarly would be problematic. There’s very little at or near the surface left.
So, likely, the jump would have to be from wood to wind, solar or nuclear.
That has been shown to be possible for wind (https://solar.lowtechmagazine.com/2009/10/wind-powered-facto...), but it will have to be different from what happened in the Industrial Revolution.