^ She isn't limited to solar energy. Frost can absorb any type of heat-energy.
Originally posted by zopzop
This girl is no joke. Pre DCNu she ate a multi-megaton blast from Firestorm and later when they tried BFRing her to the Sun, she was eating that too. In the little time she was there, she already drained the sun to the point that she created a sunspot the size of Earth or something. Left unchecked she would have ate the Sun.

Moreover, she soaked the most powerful blast Firestorm had EVER produced, without so much as flinching... All it did was further energize her.
Anyway, what I really want to know is which version of Frost this is: pre or post Flashpoint? Like I mentioned above: post-Flashpoint Frost is still a heat vampire, but she doesn't quite have the absorption feats of her pre-Flashpoint counterpart. However, she is still very powerful nonetheless:
http://s6d5.turboimg.net/t1/31636375_8495025.jpg http://s6d5.turboimg.net/t1/31636377_4525454.jpg http://s6d5.turboimg.net/t1/31636378_311454.jpg http://s6d5.turboimg.net/t1/31636379_1733015.jpg http://s6d5.turboimg.net/t1/31636381_6686817.jpg
Even her standard ice-shields stood up to pointblank blasts from Cyborg w/o issue, and she proceeded to own him casually:
http://s6d5.turboimg.net/t1/31636373_3177165.jpg
Her ice is also strong enough to encase Firestorm for an extended period of time:
http://s6d4.turboimg.net/t1/31636435_7944579.jpg
So yeah...
{edit}
Worth noting that Frost's ice isn't *just* ice/h2o. It also has some sort of organic/biologic component to it.