the Edison lightbulb with solid-state light-emitting devices (LEDs)
made sense considering that many lighting developers thought it would
reduce electrical usage worldwide. However, a new study argues that
increased lighting efficiency will not
cause a decline in electricity production because people
will just use more of it, keeping the amount of electrical usage
is often thought that a decrease in electrical usage worldwide would
add to the "green" cause by reducing the number of power
plants. But according to Jeff Tsao, the leader of the study and
an LED researcher from Sandia
National Laboratories, people will only use more electricity when
presented with cheaper lighting. He also noted that this has been a
pattern over recent centuries, dating as far back as A.D. 1700 as
humanity moved from candle to oil to gas to electricity. The study
claims that light use has remained "a constant fraction of per
capita gross domestic product" as different, newer types of
lighting came about.
the past three centuries, according to well-accepted studies from a
range of sources, the world has spent about 0.72 percent of the
world's per capita gross domestic product on artificial
lighting," said Tsao. This is so for England in 1700, in the
underdeveloped world not on the grid and in the developed world using
the most advanced lighting technologies. There may be little reason
to expect a different future response from our species."
to Tsao, there is a good side to this. With better artificial
illumination, Tsao says it will increase human productivity because
light in the workspace, especially in the shorter days of winter,
increases creativity and awareness. Also, better lighting helps aid
those who have vision loss.
fuel-efficient cars don't necessarily mean we drive less; we may
drive more," said Jerry Simmons, coauthor of the paper and also
a researcher from Sandia National Laboratories. "It's a tension
between supply and demand. So, improvements in light-efficient
technologies may not be enough to affect energy shortages and climate
change. Enlightened policy decisions may be necessary to partner
with the technologies to have big impacts."
the other hand, there are concerns with light pollution from too much
light. But Tsao mentioned that the new solid-state lighting is
digitally controlled more precisely in space and time, and would
allow humans to preserve darkness when necessary.
study was published in the Journal
of Physics D just
this month. Other contributing authors of the paper include Harry
Saunders of Decision Processes Inc., Randy Creighton and Mike
Coltrin, both from Sandia National Laboratories.
quote: a new study argues that increased lighting efficiency will not cause a decline in electricity production because people will just use more of it, keeping the amount of electrical usage steady.
quote: If a CFL uses 1/4th the energy, that would mean we would start to produce 4x the light output according to the author.
quote: Likewise, no one will use more lighting in their home than will make it uncomfortably bright.
quote: So this is almost like a situation where the cost of something goes down and people use more of it
quote: If someone gets a car that gets much better gas mileage, you cannot sit there and expect them to drive the same exact amount as they would have when their monthly fuel costs were much higher.
quote: If someone were to go out and buy an air conditioner that drastically lowered their electric bill in the summer - chances are they would turn the thermostat down farther and leave it on for longer periods of time making the entire efficiency gains null from a power savings standpoint.
quote: And third, upgrading from a 20mpg car to a 40mpg car - I'd love to see a study that proves the car useage DOUBLES to even EQUAL the gas consumption of the previous car.
quote: The future of lighting, both residential and commercial will be monitored actively from a home computer
quote: No one in the bedroom? Why are the lights on? The system will turn them off until someone else walks in.
quote: Don't parents teach kids these days to flick the light switch off when you leave the room?
quote: This I completely agree with. If I bought a more fuel efficient car, that wouldn't sway me in the least on travel. Who's going to get in and drive more just because they can.
quote: No I must disagree entirely - and this study is apparently for a self-serving agenda as anyone in the industry today examining it as closely as this guy is would know the next generation of lighting is not limited to just lighting. Its all about the control systems that are going to run them. ... These control systems will optimize performance and only run what is necessary.
quote: Replacing the Edison lightbulb with solid-state light-emitting devices (LEDs)
quote: Who is he?
quote: if you're being sarcastic, sarcasm tags would be nice
quote: Stands for Light-emitting diode, not light-emitting device...
quote: allow humans to preserve darkness when necessary
quote: Perhaps you think that astronomy is useless, they are the first who need clear dark skies at night.
quote: Think about it that way and it all makes sence.
quote: When people have more disposable income, they spend it on other things that they wouldn't have before because they didn't have the money for it.
quote: That way the free market takes over and creates the efficient products because people now have a vested interest in them.
quote: Study Shows Increased Lighting Efficiency Will Not Cause Decline in Energy Production