I too solo quite extensively with a templar no less. I have found that the greatest amount of solo content can be found where you dont think to look for it. For example areas that have heroics around the edges but if you invis past them you can find they are "guarding" the solo content.
Also for solo content dont just go after the "sexy" mobs. By that I mean the ogres, orcs, goblins, giants, etc. Many of these are the ones that are heroic. However, those 20 non-aggro beetles you passed are not heroics. Often your solo mobs are hidden right underneath you - yup in the water! When the game first went live the majority of the Commonlands and Antonica was all heroic, I leveled right past it by hunting fish in the rivers.
So, dont despair the xp is there! It may not be as cool or sexy as you would like your fights to be, but they will get you the xp you desire.