Your best bet is using an MFE with energy crystals. There's not way to transport EU through dimensions unless you're at the endgame and you can afford the Interdimensional blah blah from gregtech.
Honestly if you're that far along you can always crank up the fusion reactor. No boom potential and all the power you could ever use. Pipe it into a crapton of storage units for a short run and you should be good for some time. That way you don't have to always keep it running (takes lot to keep producing the reaction requirements) but have enough power to last a while. If you set it up right you can even have it reactivate when the batteries run low automatically giving you time to generate the fusion materials during the cycles. Just takes a lot of startup power so that aspect of it is costly.Your best bet is using an MFE with energy crystals. There's not way to transport EU through dimensions unless you're at the endgame and you can afford the Interdimensional blah blah from gregtech.
Not completely, solar panels do not work and the advanced ones give out power as if it were night/raining. Since most people go the solar route (Easy and free EU's) I assume the OP used to do the same, and is wondering what to do without them.Not really sure how Twilight Forest makes a difference. Power in the TF is the same as in the overworld.