The old pmconfig command has been replaced by the following tool, which fits in with the new naming standards nicely:
poweradm
As might be expected, this tool stores most of its configurations in the SMF database rather than in /etc/power.conf.
To see a list of values, you can use the following command:
# poweradm list active_control/administrative-authority smf=platform, current=platform suspend/suspend-enable smf=false, current=false active_config/time-to-full-capacity platform=250, current=250 active_config/time-to-minimum-responsiveness platform=0, current=0 disabled platform=false
Paraphrasing a little, the preceding output shows that "the system does not have power management disabled". It also shows that "the system does not have suspend/resume capabilities", if it has not been changed. By default, if the machine hardware is capable of suspend/resume, the value will be set to true.
The other values can be...