Taking your step ..too reduce your print

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FOOTCANDLE Classrooms (reading & writing) 50
Lighting
Even the best lighting system isn’t efficient if people don’t use it wisely. In most schools, more light is used than needed and lights are often left on when no one is using a room. Using sunlight is a good idea whenever you can. Studies have shown that students learn better in natural light than in artificial light.
Dimmer switches should be used when they are available. All lights not necessary for safety should be turned off when rooms are not in use. The same is true for outside lights. Experiment with light levels in your classroom and decide the most comfortable levels for different activities, such as reading and taking notes.

Temperature Management
The best heating system in the world can’t do a good job if outside doors or windows are left open, or if the temperature isn’t controlled. The same is true for cooling systems. In classrooms and offices, the temperature should be set at 68OF during the heating season and 78OF during the cooling season during the day. Windows and doors must be closed when the heating and cooling systems are on.

Electrical Devices and Machines
Many computers, TVs, VCRs, and other electrical devices use electricity even when they are turned off.
These appliances should be plugged into surge protectors so that all of the power can be turned off when they are not in use, or at the end of the day.
Computers and copiers are sometimes left on 24 hours a day, because they have a long warm–up time.
Turning these machines off at the end of the day and turning other machines off when they are not being used can save a lot of energy

www.need.org
Want to know more????

kWh is the unit of energy. Thus, a 100 watt bulb when used for an hour will consume 100 watthour of energy = 0.1 Kwh of energy. It consumes 1 kWh in 10 hours.


Here is a table that includes a "life cycle analysis" of CO2 emissions for various methods of powering an electricial generator. These numbers include manufacturing the generating equipment and processing the fuel. These numbers are in grams per kWh.

Coal = 800 to 1050
Natural gas (combined cycle) = 430 (average)
Nuclear = 6
Hydroelectric = 4
Wood = 1500 without planting other biomass
Photovoltaïc solar = 60 to 150
Wind Power = 3 to 22
Source(s):
http://en.wikipedia.org/wiki/Greenhouse_…
http://www.manicore.com/anglais/missions…

http://www.stopglobalwarming.org/sgw_actionitems.asp