Only about 10 percent of PCs used by organisations have power management enabled, and as a result are wasting large amounts of electricity.
energy star
XP a power hog, says US Environmental Protection Agency

Green LEED Buildings Getting Top Dollar And High Occupancy
LEED certified buildings are currently receiving federal subsidies which offset the cost of the required energy system commissioning and processing fees. In my opinion this makes the entire LEED process well worth it, but many are still not convinced… until now.

Change A Light, Save The World
Energy Star wants to change the world, one light bulb at a time and invites you to join in!
Benefits Of Recycling In The Workplace
In the past, we’ve reported on several ways to help conserve energy. Buying equipment with the Energy Star logo, shutting off equipment when not in use, and turning off lights and turning down thermostats in unused areas, are all important and easy steps you can take to lower expenses.
But, there are also broader programs you should consider.
Recycling can reduce waste…In your bottom line.
The First Certified Lead-Free, Energy Star Qualified Air Purifier Ever Available in U.S.
Video: Greening Your Holiday with Energy Efficient Electronics, Gifts, Products, and Services
Discussion on the Energy Star program, on "greening your holiday" with electronics, gifts, products, and services that are energy efficient and save money.

Guide to Green Symbols
This story gives explanations of all of the symbols indicated in the tags: various types of fair trade, recycling symbols, energy star compliant, USDA organic, green seal certifiied, etc.

Energy Star Redefines Its Shine
If you are reading this, odds are that you’re doing it on what used to be an Energy Star compliant computer. With the roll out of Energy Star 4.0 as its being called, odds also are that your machine no longer qualifies. “Whoa!” You might be thinking, “How did that happen, I just bought the thing!” Well, here’s the deal: ‘Energy Efficiency’ is a relative term.

Green PCs: A First Step
Energy Star 4.0-rated products can lower your energy bill and reduce the amount of pollutants in the world--but by somewhat less than you might hope.
Sustainably Yours
Sustainability begins at home, where our environmental footprint is heavy. More than 30% of our carbon emissions are produced by our shelters. Live Green, Live Smart™ was founded to help ordinary people find ways to make practical changes in their daily behavior and in their shelters to preserve, protect, and restore the earth’s environmental integrity.