Shares of some top utilities companies are down at 10 a.m.:

American Electric Power Co. unchanged at $54.55.

Consolidated Edison Inc. Holding Co. fell $.31 or .5 percent, to $56.29.

Dominion Resources Inc. fell $.32 or .5 percent, to $68.83.

Duke Energy Corp. fell $.12 or .2 percent, to $72.20.

Exelon fell $.03 or .1 percent, to $34.29.

PG&E fell $.17 or .4 percent, to $46.65.

Southern Co. fell $.15 or .3 percent, to $44.39.