You are right. They were fine the way they were. It did take a lot of metal to make those solars. Sure when you got a bunch of auto miners going then you could pump them out. But before that, it took a large investment of metals to make them. If they just want us to use nukes, then remove most other energy generators. Id ask for more options as far as power, but they have enough choices in types, only they have all been nerfed.
Originally you could use wind power. That was back when you just had one kind of cable, copper. You could easily make a extreme voltage converter and those lesser MFEs. You still had to build a very tall tower and place your generators up top and transferring the power down a LONG WAY using EV. Then you got it at the bottom and lost maybe 200 EU, but who cares? Then you easily convert it back to normal voltages.
Then they screwed it all up in IC2. Now you have all these cable types and the cost in materials just to convert from LV to EV and back again is absolutely nuts. Did anyone think about that? Until they remedy that, Wind power is completely useless as a real source of power.
There was water power. This idea seemed to be still-borned. You would think that it might be take into account a very large area for generation. IE: an ocean would act as a tidal generator. Or perhaps the velocity of water flowing over it, such as a tall waterfall. But no... This kind of power needs to be re-engineered.
Then there was solar which did require a very large investment in materials because it only ran during the day, above ground and provided a little power. It was fine. If the hard core people thought it was far too much, then they could just not use solar. What is their motivation? The game isn't tough enough? Is that it? Then get a mod that introduces more aggressive monsters or something. Or just don't build solar panels.
Geothermal is OK, It is my starting generator when I start a new world. However without some kind of automated lava generation system (not to mention it eats tin) it isn't useful for anything but a small scale operation. Tin is hard enough to get. Now if you could use copper in place of tin, it wouldn't be so bad, although you will still need to manually fill a bunch of lava cells.
Nuclear: Very expensive and if you screw up, there is a giant crater where your base used to be. NO THANKS. You can keep it.
I just want to explore the world and build neat things. I just want mods that help me do that. Please reconsider your changes to solar power and/or fix some of the other issues with the above mentioned power systems. Keep nuclear the way it is. Ill never use it. People who want danger and hard core stuff, they can play with nuclear.