Portland Energy Conservation Inc.
http://www.peci.org/

ASHRAE
http://www.ashrae.org/

AEE
http://www.aeecenter.org/

USGBC
http://www.usgbc.org/

LEED
http://www.usgbc.org/leed

BcA
http://www.bcxa.org/

EPA
http://www.epa.gov/

California Commissioning Collaborative
http://www.cacx.org/

Energy Star Commercial Buildings
http://www.energystar.gov/index.cfm?c=business.bus_index

DOE Energy Efficiency and Renewable Energy:
http://www.eere.energy.gov/inventions/energytechnet/index.html

Solar Energy Industry Association
http://www.seia.org/