This may seem easy, but it is not. That 10253 is my baseline load, meaning the generator must run nonstop. That rules out a nuclear piles above MK1, generators, too-high windmills, water mills, and geothermal. I have a very limited space to fit it in piles, two 9x6x3 blocks, which rules out me adding containments and thus rules out SUC based systems.
And before you say solar or wind, Snow is likely to collect upon the arrays and wind lacks the density to prevent losses related to transmission (solar has a similar problem, but is a little less with HV arrays).
I did get a setup of 72 nuclear piles (18 Quadrant V Mod 0 hybrid breeders and 54 two chamber MK1 generators) that could manage a little over half of what I need, but I would likely need cables to carry a redstone signal to make it practical. (I saw this suggestion earlier today, but did not see a real use until now.)
Edit: I would be able to access the piles from below through the cables it looks like.
Now the set up has 54 breeders and 54 generators. Good thing I have other ways of getting the materials, otherwise I would be in some serious trouble.