Alright, here's my report on the energy rework.
It works for me.
In more detail, Collectors probably produce too much.
I did my usual single-HW start and I did not have to build a collector on any of my captured planets until I started on my fortresses at about the hour and half mark.
Compare this to usually having built 10+ reactors on my HW and multiple Reactors on every world I capture ASAP under the old system, I did not have to build an energy production structure until an hour and a half in.
I did build econ stations Mk I on my captured worlds however, so I did get energy from them.
Building 3 collectors I had 200k spare energy and 3x Mk I fortresses built. I never even thought about Converters.
I did not have Golems, Spirecraft, or Fallen Spire enabled however, need to see what people playing with those report before nerfing Collectors output.
So, that's my first impression of the new system.
D.