I haven't played this pack often enough to come up with a "usual" way, and the usual ways from other packs don't work here, but here's what I did in this game:
(1) Early LV era: Basic steam power setup with 7 HP steam boilers and one or two GT LV turbines.
(2) Late LV and early MV era: Tree farm -> wood -> charcoal in coke ovens -> alumentum, used in a RC LP36 steam boiler. Steam turned into EU by a RC turbine. 200 EU/t.
(3) Late MV and early HV era: One RTG cluster. 512 EU/t.
(4) Late HV and early EV era: Two IC2 nuclear reactors for use at peak time (though it turned out they were running most of the time, damn the lack of automation), burning MOX fuel. ca. 1500 EU/t. Two more RTG clusters. 1024 EU/t.
(5) Now: on the cusp of starting up a fusion reactor. 32000 EU/t. In the process of refining fuel...
The lack of long-range power transfer options is why I haven't built a big reactor. I would use it mainly to power my ender quarry, but since I can't efficiently transfer that much power to temporary locations without a big machine cluster and a quantum link I opted to put the quarry near my base, power it through my EU grid and increase the range to 1000x1000. Ironically, such a range actually makes it feasible to build a big machine cluster at a mining base, so I may end up with a Big Reactor at some time anyway. I can't do everything at once, though. It's possible to convert RF to EU, but it's a major PITA. I found it more enjoyable to work towards a fusion reactor directly.