Here are the top 10 energy that consume the most energy.

Here are a few strategies:
Use a switchable power strip to pull the plug on clusters of computer or video products.
Buy low standby products if you can find them. Don't ask a salesperson though because they probably won't know. Better to look for ENERGY STAR products, which are tested for profligate reliance on standby power.
Buy a low-cost watt-meter, measure the devices in your home and take targeted action.
If all else fails, pull the plug, but be careful not to get electrocuted in the process.
Here are the top 10 energy that consume the most energy.

Photo: Business Wire

No. 1: Set-Top Box*
Average Watts While Off: 28.286
Average Watts While On: 30.198
*Average includes DVR, digital cable, digital cable with DVR, satellite, satellite with DVR.
No. 2: Notebook Computer
Average Watts While Off: 8.90
Average Watts While On: 29.48

Photo: Wikipedia

No. 3: Inkjet/Multifunction Fax
Average Watts While Off: 5.31/5.26
Average Watts While On: 6.22/9.16



No. 4: DVD/VCR
Average Watts While Off: 5.04
Average Watts While On: 13.51

Photo: Wikipedia

No. 5: VCR
Average Watts While Off: 4.68
Average Watts While On: 7.77


No. 6: Central Heating Furnace
Average Watts While Off: 4.21
Average Watts While On: 339.71

Photo: Wikipedia

No. 7: Cable Modem
Average Watts While Off: 3.84
Average Watts While On: 6.25


No. 8: Multi-Function Laser Device
Average Watts While Off: 3.12
Average Watts While On: 46.98

Photo: AP

No. 9: Cordless Phone With Answering Machine
Average Watts While Off: 2.92
Average Watts While On: 3.53


No. 10: Desktop Computer
Average Watts While Off: 2.84
Average Watts While On: 73.97

Source click here: http://finance.yahoo.com/family-home/article/113465/top-energy-consuming-items-forbes