BACnet (used at UMich)

http://www.ashrae.org/members/doc/hoffmann_8090903.pdf

General info About Building Automation, Energy Monitoring

http://www.ashrae.org/doclib/20070104_gonzalez.pdf

Manufacturers:

Mashita Electronics www.watt-minder.com

Energy Inc. http://www.theenergydetective.com/index.html

PG&E Smart Meter http://www.pge.com/smartmeter

Wattson: http://www.diykyoto.com/uk

Alert Me http://www.alertme.com/products/alertme-security/  

Google  http://googleblog.blogspot.com/2009/02/power-to-people.html

Fat Spaniel Technologies: http://www.fatspaniel.com/