CamelotVault wrote:2.10 Why does it take so long to regenerate power?
Power regenerates at a different rate, depending on how much you've used. The general rule of thumb is that the more power that you have, the faster the power that you've used will regenerate; if you drop below 50% power, then power regeneration slows considerably. If you've used all of your power, then plan on sitting down for a few minutes and taking a break.

When soloing, take quick breaks between each kill, perhaps sorting through the loot you've collected. You'll ultimately spend less time regenerating your power that way. If grouped, don't dump all your power into a mob; there are other players there, let them do their part as well, rather than nuking everything to oblivion and then forcing everyone to wait on you to recover.

If you have done some RvR and have enough points, then the first ability you should train is Mystic Crystal Lore. You can use it to increase your power by 25% every 3 minutes, outside of combat. If you do use more than 50% of your power every once in a while during a fight, you can use MCL to boost your power over the 50% mark and thereby increase your regeneration rate. It's one of the most useful realm abilities for casters for both PvE and RvR.