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[smurfingtonthethird]

I've built a pump stack to the top of my fortress, so I can cover everything with lava. The only problem I have is that I need 2000 power to get my monster of a pump stack moving.

Any power ideas which won't ruin my already low FPS?

[ImagoDeo]

Planning to cover everything with lava, and you're hoping to save a few FPS? ...ok, well...

You can use dorfpower to power the whole pump stack. This requires you to either a) have as many dwarves as pumps or b) set things up to pump sections of the stack at a time and thus get the dorfs to move the lava slowly up the stack. This is a bad solution though since it requires so much dorfpower.

If you have an aquifer, tap it and run the water in a long 2-z-tall channel off the map's edge. Then fill the channel with linked water wheels. I built a very simple battery this way that generates 1400+ power easy as cake. With no aquifer, it's harder - got a river? that'd also work relatively well. Without either of those...

...you're stuck building an FPS-damaging Dwarven Water Reactor Battery. Protip: run all the connecting gears and shafts overhead, on the z-level above the wheels and pumps. I can throw up a few screenshots if you want me to.

[soulsource]

Do windmills have any effect on FPS at all?
My last fort was already down to 15 fps when I started building it, but I used a 12x6 array of windmills for my magma pump-stack without noticeable slowdown.

[Ravendarksky]

If you build a large section of waterwheels and let water flow through it until it's all 7 deep AND some of the water has flowed off the edge of the map the game will think the water under the wheels is permanently flowing even if it never actually does. You can exploit this by building floodgates at either end and sealing it off once the above conditions are met.

Unlimited power, no movement, no risk (assuming you wall off the squares on either side of the floodgates to prevent creatures ruining everything)

[escondida]

I prefer bridges to floodgates, myself (-: .

AussieDwarf's Mechanical River of Power is a great complement to the eternal flow bug. Simply install a lever-operated hatch cover or retracting bridge over the drain. Then, get the flow going, close the hatch, wait for the River to fill all the way and voilą! a tremendous, easily-expansible power source with no lag whatsoever.

You can also modify any existing well to take advantage of this pretty easily: just add a raising bridge to block the drain (you *do* have drains for your wells, right?) and use the source and drain aqueducts to spin your water wheels.