So basically with Red Power installed you can pretty much run a Nuclear Reactor using nothing but uranium and water buckets. You could also do something similar with water mills, using buckets and tubes.
In my opinion I think this is way OP. I know this is not Industrial Crafts fault, I just wish there was a option in the config file that would make it so you cant connect tubes to machines.
Another Issue I would like to address is the solar panels. I know its a bit more expensive to make. But I really think they should be nerfed just a bit. I know they only work during day time. But face it most of the time on my server at least I'm always setting the time back to 0 when it starts to get dark. Or if your playing single player you probably always go to bed. So the Solar panels are pretty much on 24/7.
To fix this, I think it would be best to make solar panels give .05 EU each instead of 1. I am aware many people won't like this. So would it be possible to add a option in the config file that would allow you to change the EU output of the solar panel. This way people who liked it the old way, don't have to change anything, and if people think its to op they can easily adjust it in the config.
Another Issue I have a problem with is empty cells and the nether. You can go to the nether with 10 stacks of empty cells and return with 10 stacks of lava cells in about 10 minutes. That's about 640 cells. That about 13 million EU that you just harvested in 10 minutes.
A fix to this I would say is to not allow you to revive a lava cell by using a empty cell on a source block of lava.
Or again, at least add a option in the config to disable picking up lava cells using empty cells on lava blocks.
I was also going to mention the tin bucket to iron ingot exploit that you can do when you have RedPower Installed, but I see there is a option in the config that disables the bucket recipe using tin.
So anyways. These are just suggestions. Go easy on me.