Energy on Mars

The September 9, 2006 episode of Quirks and Quarks had a segment called "Martian Gas Jets" that discussed an interesting feature of the Martian southern ice cap -- namely that it explodes with geyser-like eruptions now and then as it warms up. This is particularly interesting since the "ice" is frozen carbon dioxide from the atmosphere.

This got me thinking -- would this be a good way to create energy on Mars? Would it be possible to build a power plant consisting of large chambers that you filled with dry ice mined from the ice cap, and then sealed up and heated to create high pressure gas, the release of which you'd use to turn a turbine or what have you. I wonder if this idea is practical. Interesting thought.