Tested all the Generators in 1.18 using superconductor cable output to a Matter Fabricator (2k input)
I found that some of the expected output rates do not match up, and the charge rates on some are well below par.

In addition it would be great to add charge rate to item descriptions.
Below I'll list my findings and annotate any that I believe are incorrect in regards to the description.

Fluid Gens

Generator
Charge Rate 10 E/t
Time taken to fully charge = 50 sec
Output Rate 32 E
Time taken to empty when not charging = 22 sec
Time taken to empty when charging = 15 sec
Ratio 16:5
Basic Gen, seems reasonably balanced for early game, if not a little underwhelming

Diesel Generator
Charge Rate 20 E/t
Time taken to fully charge = 25 sec
Output Rate 32 E
Time taken to empty when not charging = 22 sec
Time taken to empty when charging = 41 sec
Ratio 8:5
Progression from basic gen, however the fuels are far harder to come by than some of the higher tier gen
Diesel production requires Oil, Oil is used in the SF Generator, which is higher tier
Producing Diesel is 20 E/t + 5 E/t from Oil production nearly renders this generator useless._

Gas Turbine
Charge Rate 16 E/t
Time Taken to fully charge = 52 minutes
Output Rate 128 E
Time taken to empty when not charging = 6min 30 sec
Time taken to empty when charging = 7min 26 sec
Ratio 8:1
The charge rate is far too low for this machine to be considered useful for anything other than backup
Given that it costs 10 E/t to generate Methane, this machine is only worth 6 E/t

Semi Fluid Generator
Charge Rate 8 E/t
Time Taken to fully charge = 1 hour 44 minutes!!
Output Rate 128 E
Time taken to empty when not charging = 6min 30 sec
Time taken to empty when charging = 6 min 56 sec
Ratio 16:1
This machine is just plain awful, needs some tweaks to charge rate
Costs 5 E/t to generate Oil, this machine then only outputs 3 E/t

Thermal Generator
Charge Rate 16 E/t
Time Taken to fully charge = 52 minutes!!
Output Rate 128 E
Time taken to empty when not charging = 6min 30 sec
Time taken to empty when charging = 7min 26 sec
Ratio 8:1
Identical to Gas Turbine, Lava is far easier to come by so I would expect this to be somewhat 'nerfed' in comparison, but as per previous 2, charge rate is just too low

Plasma Generator
Charge Rate 400 E/t
Time Taken to fully charge = 17 hours 21 minutes!! (this just seems insane)
Output Rate 2000 E
Time taken to empty when not charging = 3 hours 28 mins
Time taken to empty when charging = 4 hours 20 mins
Ratio 5:1
Probably the best of the lot, explained by the Extreme tier granted to it

Seem to be missing a bridge machine between Medium & Extreme tiers, maybe consider changing one of the existing machines or adding another to fill this gap
The generation rates on all machines are simply too low to compete with the passive gens below

Passive Gens

Dragon Egg Siphon
Output Rate 128 E
Charge Rate 4 E/t
Storage seems to be higher than 1k, more like 12.5k
No interface, unable to see when full
As a early mid game passive generator it should be a little higher

*Water Mill
Output rate 32 E
Charge Rate 0.1
As above , 0.1 E/t seems very low, pretty much useless unless you have 100's
No interface, unable to see when full

Wind Mill
Output Rate 128 E
Charge Rate 2 E/t
No interface, unable to see when full
Storage seems to be higher than 10k, more like 15k

Basic Solar Panel
Charge Rate 3 E

Advanced Solar Panel
Charge Rate 12 E

Industrial Solar Panel
Charge Rate 21 E

Ultimate Solar Panel
Charge Rate 48 E

Quantum Solar Panel
Charge Rate 512 E

The charge rate of the Solar panels seems to ramp up/down during the day/night cycle only hitting peak generation at noon where it then immediately starts to fall, seems logical, but unsure if intended.
These are incredibly powerful and I would probably consider them a bit OP
Values listed on the wiki also do not match in game

Edit..

just noticed the extreme cost for the Dragon Egg Siphon.. I take back my comment about it being "early mid game"
😲

DONT TOUCH "MY" SOLARS!!!! 😡 unless its to make it more powerful!

Agree on everything else

Ah yes, Lava gen cannot power a centrifuge live, big sadness

I know this can be changed locally, but a lot of people don't know that and don't like to mess with the mod's intended balance.

So my suggestions (so far part 1/4)

Generator.
Leave it.

Diesel Gen
Centrifuge requires 5e/t to make Oil, Distillation Tower costs 20e/t to turn that to Diesel
This gen needs to be able to produce 25e/t to even power the 2 machines used to produce the fuel.
Given it only converts Diesel at the rate of 20e/t its net -5e/t so cant be used to power anything else.
Bump the generation rate to parity 1:1 and increase the stored power capacity

Gas Turbine
As it stands this is pretty useless.
Generation rate should be at least 32, if not 64, you can then restrict the output via lower tier cables.
It will use up fluid faster than a centrifuge (or 2 can actually generate it - unless you overclock them, at which point they run out of power anyway!!)

E\t is not so useful to calculate net gain from processing. Because it doesn't count E\Mb of fuel.

Diesel Generator

Distillation tower will spent 8K Energy to produce 16 Diesel cells. This gives us 500E spent per cell.
Diesel generator will generate 128E per mB of diesel so one cell will give 128k energy.
Net gain for Diesel is 127.5k energy per cell while Oil will give 16E\mB in semifluid generator with 16k energy per cell.

Thus processing oil will give a huge boost in energy gain from a cell of a liquid.

Gas turbine

Gas turbine will produce 45E\mB of Methan so one cell will give you 45k Energy per cell
Industrial Centrifuge will spend 25k on producing single Methan cell
Overall net gain is 20k Energy per cell

It looks like we can decrease time to make a methan cell, thus net gain for Gas turbine will be higher

E\t difference between generation and consumption should be balanced by energy storages. 1..n generators should supply power to energy storage and can do that in advance. Then some machine connected to energy storage output will use energy from it rather then from generator directly,