A compressor takes about 200 Eu/t to keep a ~1800 Eu/t reactor cooled, but by sacrificing 30~ Eu/t to remove a 7th uranium you can switch to a bucket system and forgo a compressor completely. There are difficulties considering buckets cant stack, but im fairly certain the prototype im working on can keep it going safely for a whole cycle.
Yeah, got a CASUC reactor running now on a mostly creative mode server to provide power. Nets around 1400EU/t (I think) as the 3 compressors (very overclocked compressors there) eat up around 300EU/t. Also needed are 3 snowmen , 3 transposers, 3 block breakers and a handful of tubes. (the snowman poop 9001 snowball creator)