A warning that all numbers are from memory, so double-check for accuracy: I've included where to look for the appropriate sections to make it easier to fact-check
Sorry I haven't been lurking much lately, I have a brand new daughter (Victoria Susan Annabelle) and not so much sleep...
Remember that I use batteries to be *cost effective* as distinct from *space efficient* since most of the bulk freighters that I have in use have very low (less than 0.1 G) maneuver performance, and use tugs and tenders for insystem maneuver.
HG requires that powerplant equal to the jump number be supplied within 2 combat turns to allow jump (this is in the combat / disengagement section). This is IIRC the *only* listed requirement anywhere in the rules base for power required for jump. This means that to power a jump you need 1/2 EP per jump number to be provided to the Jump drive.
To convert for TNE / T4, 1 EP is the same as the amount of power needed to provide 1 G of accelleration, which is (IIRC) 50 MW per 100 dT.
Using TNE / T4, TL-12 batteries provide the best power/cost balance, and are far cheaper than a powerplant of the same size, and can hold a charge indefinitely. This means that if you don't care about maneuver drive performance (and 1G is a *lot* of thrust for a deep space application) you can run a "jumpframe" on a 10-50 MW reactor and a large pile of batteries. Note that this means that your ship will have performance similar to those in BattleTach, requiring days to recharge after a jump (or recharging during jump: this really depends on whether your house rules require power expenditure to *exit* jump as well...)
Hope that this is useful and answers your question. If not, hit me with a PM when you post here, I check email more often than COTI these days, and my PM is set to mail notify me.
Scott Martin
