MJ

Here is a reference list of the energy cunsumption and production of the different BuildCraft Engines.

Engines

 * lava / oil / fuel respectively

Conductive Pipes
Data for pipe capacity is currently incomplete.

Filler
The filler has a 40% chance of not placing a block but still using the energy it would have.

Quarry
A quarry's mechanical arm moves at a speed dependent on how much energy it is able to draw from the internal storage. The exact formula for calculating movement speed is 0.015 + Energy Per Action / 200, meaning it will move at a minimum of 0.015 meters per tick, to a max of 0.015 + 9/200 = 0.06 meters per tick.

While digging, the quarry tries to perform an action every tick, which is why the energy per action is lower than other machines.