Energy for icbm minecraft mod?

Those two mods alone don't provide power.

ICBM is all about explosives themselves, while Universal Electricity is a base mod, it doesn't actually add any blocks.

There are lots of mods for power some of the more popular ones are as follows with the 'flavor' of electricity in parentheses:

Thermal Expansion: (Redstone Flux aka RF) This particular power source is growing in popularity, mostly because it is more forgiving than many other power-using mods. http://www.minecraftforum.net/...sion-3000/

IndustrialCraft 2: (Energy Unit aka EU) When it comes to generating power, few mods give as many options as IC2. Warning: IC2 2.X is trickier to build and more than a little unforgiving if you want to move them. The blocks are still powerful, but read up on it before you use it! http://www.minecraftforum.net/...raft-v855/

Buildcraft: (Minecraft Joules aka MJ) Buildcraft is another older mod. Not as many generating options as IC2, but the generators can be moved without fear. On the other hand, a couple of the generators *explode* if mistreated. http://www.mod-buildcraft.com/

Extra Utilities: (RF) First, this mod uses the exact same power as Thermal Expansion, no conversion necessary. What it adds is 8 generators that are safe to pick up, keep the energy stored in them when they are moved, do not explode, and can use fuel sources not usable in other mods. Examples include generators that burn food, nether stars, or anything pink. http://www.minecraftforum.net/...ies-v110b/

Big Reactors: (RF) This mod only adds one thing, large mutli-block reactors. They can produce huge amounts of RF, and at this time do not explode. They can be very resource intensive to build though, and are much easier if you are using another mod for faster smelting. http://www.big-reactors.com