Mechanistic is a relatively new project I've been working on. It doesn't have a working version yet so no download, sadly. But I figured I'd describe it before it comes out, sort of a sneak peak I guess.
This mod is about machines, as the title implies. as you might have guessed you need get energy to run them, the machines that make energy burn fuel and the electricity that results is put through wires to other machines. There is also ways provided to easily transport items and blocks, as long as you have the required crafting materials.
Steam Power, The First Form
The most basic form of energy is steam. And the most simple way to create steam for energy is a Steam Furnace. This machine creates steam using water and coal, the resulting steam is piped out the top. If you don't have another machine to catch it, it will dissipate into the air (not good). To turn the steam into power, you will need a Steam Turbine, and put it on the the top to catch the steam. Some energy will be stored in the Steam Turbine, but you will waste electricity if does not connect a wire to conduct the energy away from the machine. Also, if the power stored exceeds the capacity, the machine will only be able to radiate electricity off of itself as heat (therefor wasting it) for so long before it overheats and ceases to work; or explodes. So you must be very careful to not keep producing energy once the cap is reached.
That's what I have in the mod so far, if you have any suggestions, feel free to post them.
P.S. In case you were wondering, the estimated date I am thinking this will come out at is April 30, 2015. This might change but this date gives me quite a bit of time.