Does powertop work with Mac OS X Snow Leopard or are there other power profiling utilities

I recently came across a blog post highlighting powertop for Linux (see: http://www.lesswatts.org/projects/powertop/). Based on the FAQ, powertop relies on the fact that the Linux kernel is now tickless. Given a specific Linux kernel requirement, I am doubtful that it will work with the Darwin kernel. Freshmeat also mentions powertop, but they have a tag suggesting that a POSIX compliant OS can use powertop. Since FreeBSD is POSIX compliant, I was wondering if anyone had tried powertop on Snow Leopard ?

If not, does anyone know of similar, power profiling tools for Snow Leopard ? Specifically, power profiling tools that highlight processes consuming power.

Thanks,

Scott