Because I can...
1668 Cells / Cycle, quadthorium breeder. Only eff 4/7, but if you need maximal charging speed, you won't easily get better than this.
http://www.talonfiremage.pwp.b…5pk62j0zb4je4avo46fm6q6oz, OR just run the above setup cold. You should still charge ~ 1660 cells on a full cycle.
Note that the running configuration has 60 heating cells, the heating 61, and the heating configuration can be left AFK if you want to leave it warm.
its not as 'fast', but if you want to be artful about it, you could do it with an auto treefarm.
Are you sure, that there is a diffrence of 700000EU between Oil and Fuelbucket? I just ask to make sure that this is no Typo.
I think it depends on your exact mod/setup, but yes, you'll be in the 650k-750k EU/bucket range.
Green energy can't output more EU then a well built nuclear reactor, unless one wants to waste inordinate amounts of resources in a desperate attempt to prove "It's just as useful". A ultimately futile decision since the power one gets from it does not compensate the cost or size of it's construction.
"Free Energy" is what you use in a tiny part of your base. Such as, say, powering your luminators.
776 iron, 513 stone, 3 gold, 4 rubber, and a stick is not expensive for average 128 EU/t continuous. -- investing in the diamond+redstone to move that down to ground level may be more expensive, alternately building a floating castle also may not be desireable.
Those look expensive at first glance, but once its up and running 24/7, nukes just dont compare.
In my main game world, I use wind towers in my main base, but nukes at satellites/mining stations, and geotherm in the nether. Use the right tech for the right location.
Solar/wind/water farms have specific advantages in renewability/'free' energy -- in that regard they make fine 'endgame' targets.
Nukes however, have the crown in energy/block density, and in material investment. In that regard, nukes are definitely king for speed-of-deployment, at least until you've build Alblaka's solar spamatron.
With redpower, sure. Vanilla IC2 or Vanilla + buildcraft, not so much -- but for the theory, check out:
In theory, should be implementable by anything turing-complete.
Use classic mobtower/grinder designs, insert tesla coils, or a HV/EV loop in place of lava blades. You wont get XP though, ya?
If you are OK with having your full-crystal output lag until the MFE/MFSU is full, you can use vanilla BC2 pipes to trigger item moves to have battery-pushers. You could also do something with latches/flipflops and EU-detector cables.