I'd recommend this guide (there are more US side, too):
Old, but still 'ard
Solo tanks are painful... really painful, but being /Energy will help somewhat. If you really want to play Inv/EM solo, I'd suggest making and EM/Inv brute instead - you'll have much more fun 
@Jay Leon Hart
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Soloing on an /em tank is horrific until really high levels. If you plan to solo mainly and it's just for PvE, I'd consider other options
I soloed mostly on my inv/em.. so I could get the badges I wanted and do (most) of the arcs, so its perfectly doable.
It's not so bad as many make it out to be.
You have to add more offensive abilities from the pools as just barrage and bone smasher wont be enough, though energy punch can be useful until you get more attacks and can respec it put. Hasten and Air superiority from the power pools will add a bit off offensiveness as well as be the first stepping stone to a travel power.
Unless youre really fond of teleportation or Superjump..
But none of them is really helpful for a solo inv tank.
Many tanks that pick SJ do it for the purpose of the extra defence but for soloing its unnecessary unless you want to max out your defensive potential for 8 man teams on invincible rep.
UNION
Officer Cuffz lvl 50 Inv/Nrg Tank
Badge lvl 50 dwarf/human Peacebringer
Dark Air lvl 50 Ice/Cold Corruptor
Ayre lvl 50 Storm/Elec Defender
Total Cat: @Officer Cuffz
"When I say interview, I mean engage in combat and defeat..." -Laura Brunetti, on how to deal with Warriors.
Thanks for the info guys.
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Thanks for the info guys.
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You got to really, really want to play an energy melee.
But 35-39 make it all worthwhile...
Don't get into a flap. It's only my opinion and I'm thick
Arc 56763 Lord Anarchys heaven
2 mission arc. Bring friends cause Lord Anarchy means business...
It´s not for solo only, but it hard to find a team nowadays. And it fits a concept that i got for a toon.
Go for it it is great. And dont leave out energy punch it is one of the best attacks in the game because it is so fast.
I have way more hours spent in the 40+ areas than anyother other area of the game on most of my 40+ toons and I expect thats the same for a lot of people. So upto 35 its possibly less than half the game although I do think if solo, its painful unless you have a damage aura (coming from my Brute experiences although /SS is bad with foot stomp at 38).
He will honor his words; he will definitely carry out his actions. What he promises he will fulfill. He does not care about his bodily self, putting his life and death aside to come forward for another's troubled besiegement. He does not boast about his ability, or shamelessly extol his own virtues. - Sima Qian.
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Go for it it is great. And dont leave out energy punch it is one of the best attacks in the game because it is so fast.
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Energy punch i haven't had in my build since i5 best to maximise on what you have barrage isn't really worth slotting imo slotting bone smasher, whirling hands, Energy Transfer, Total Focus and stun if you decide to take it, it's pretty good for near perma-mez on a boss but it's mainly down to slots but not everyone plays the same or thinks the same when it comes to a tank look at builds, power choices, slotting find what you like/don't like adapt and change to suit you no point in being a carbon copy of someone else 
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I'd recommend this guide (there are more US side, too):
Old, but still 'ard
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Not wishing to blow my own trumpet or anything, but this is a sliiightly (but still pre-Inventions) updated version.
Do not go gentle into that good night.
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Hi all.
I was just wondering if I could get help to build a good PvE Inv/Energy tank. Is it a good combo or should i try something else?
Should add that i solo the most of the time.