(from the EPA at: http://www.epa.gov/climate/climatechange/wycd/downloads/wycd-office.pdf)

1.  Reduce equipment energy use

Office equipment and electronics use energy even when idle or on stand-by. To save energy and reduce greenhouse gas pollution, activate the power management features on your computer and monitor, unplug laptop power cords when not in use, and turn off equipment and lights at the end of the day. Consider using a power strip that can be turned off when you’re finished using computers, printers, wireless routers, etc.

2.  Buy ENERGY STAR office products

When buying new products, look for ENERGY STAR qualified office equipment, including computers, copiers, lights, and printers.

3.  Reduce energy use for your commute

Switch to public transportation, carpooling, biking, telecommuting, and other innovative ways to save energy and reduce greenhouse gas pollution. Encourage your employer to offer commuter benefits that address limited or expensive parking, traffic congestion, and the environmental impacts of drive-alone commuting.

4.  Reduce, reuse, recycle

Recycle office paper, newspapers, beverage containers, electronic equipment, and batteries. Encourage two-sided copying and buying supplies with recycled content. For your old electronics, investigate leasing programs to ensure reuse and recycling, or donate used equipment to schools and other organizations.