Take a look at:
http://www.ab.com/PEMS/
http://www.ieee-pcic.org/archive/PCIC%2098-24.pdf
http://www.squared.com/
http://www.sandc.com/

From Googling "electric power management system"

My electrician showed me a brochure of a MCU controlled device with solid
state modular contactors, sensors, pc interface etc.  It was going to cost
about $2k US for our small ~15 circuits needs.  I will ask him for the name
next week.

Nelson

> >Hello to all,
> >
> >I would like to monitor power to a complex of buildings.  Has anyone had
> >experience with commercial data logging systems that could be permently
> >installed in each building and continuously monitor voltage, current and
> >frequency. I would like enough memory to keep the last 48 hours of
> >readings,
> >with say a 1 second sample rate, and be accessable over a lan connection.
> >If anyone has had any experience along these lines I would
> appreciate their
> >input.
> >
> >
> >
> >                                               Rod
> >
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