Life in space

I am looking for info to estimate detailed amount of energy involved in every process of a space colony or a spacecraft. Here is some reference information.

Space Settlements: A Design Study
http://settlement.arc.nasa.gov/75Sum...Contents1.html

Life Support
http://www.projectrho.com/rocket/rocket3g.html#cess

There are some processes that are endothermic and some exothermic.
So the amount of energy needed will not be just like energy requirements of electronics.
I am mostly concerned about recycling of energy, and how much energy needs to be consumed or radiated to space.

Alright, gonna have to find my slide rule.....

A small nuclear reactor will gave you pretty much set for anything.

But what kind of "colony" or "craft" are you talking about?