Not sure if this is a bug, feature, or can't be changed / fixed.

I have a resident ender ocean world requiring 90K/T to run, i went in, set up an ender pump, ender tank, tessaract and a chunk loader and left.

I removed the realized dimension tab out of the builder, and let it drain. It's currently at 0 power. The drums in the Overworld are still filling up. I know it's not what is left over as they are bedrockium drums and have put in over 8K buckets since it ran out of power.

I would love to turn off chunkloaders and similar in unpowered dimensions but I don't know how to do that currently.

Probably fixed in upcoming release (but still disabled by default)