|
| Back to Contents Page |
Home
Energy Index |
About
Home Energy |
| Home Energy Home Page
| Back Issues of Home Energy |
Home Energy Magazine Online May/June 1998
TRENDS
First Patch on Leaky Electricity
Last
December, after meeting with representatives of the federal Energy Star
program, major TV and VCR manufacturers agreed to substantially reduce
the energy their new models use when they are "off." This energy use, sometimes
called standby power or leaking electricity, can be as much as 25 watts.
Under the Energy Star guidelines, TVs that consume no more than 3 watts
and new VCRs that consume less than 4 watts while off carry the Energy
Star logo; machines with the logos are already appearing on store shelves.
Some manufacturers have adopted even more stringent
energy-saving goals. For example, Sharp Electronics Company has announced
that TVs over 29 inches that it sells in Japan will consume less than 1
watt in standby mode. Moreover, these units will have adjustable brightness
so they can also save energy when on.
According to recent research at Lawrence Berkeley
National Laboratory, TVs and VCRs are the two appliances with the largest
aggregate standby losses. But there are still many more appliances that
leak electricity. Some of the worst culprits are TV set-top boxes (for
cable TV and satellite reception, and video games), compact audio equipment,
and computer peripherals. Altogether, leaking electricity represents about
5% of total residential electricity use, or 50 watts per home. Homes with
many remote-controlled and rechargeable devices can easily have over 100
watts of leaking electricity.
International efforts are also under way to reduce
standby losses for all appliances to 1 watt or less. This can often be
accomplished simply by improving the power supply and making small modifications
to the circuits. The savings per device rarely exceed 15 watts, but with
the increasing number of electronic devices in homes, there are hundreds
of megawatts of potential savings.
| Back to Contents Page |
Home
Energy Index |
About
Home Energy |
| Home Energy Home Page
| Back Issues of Home Energy |
Home Energy can be reached at: contact@homeenergy.org
Home Energy magazine -- Please read our Copyright
Notice
|