Featured Research

from universities, journals, and other organizations

Americans use more efficient and renewable energy technologies

Date:
October 24, 2012
Source:
DOE/Lawrence Livermore National Laboratory
Summary:
Americans used less energy in 2011 than in the previous year due mainly to a shift to higher-efficiency energy technologies in the transportation and residential sectors. Meanwhile, less coal was used but more natural gas was consumed according to the most recent energy flow charts.

Americans used less energy in 2011 than in the previous year due mainly to a shift to higher-efficiency energy technologies in the transportation and residential sectors. Meanwhile, less coal was used but more natural gas was consumed according to the most recent energy flow charts released by Lawrence Livermore National Laboratory.
Credit: Image courtesy of DOE/Lawrence Livermore National Laboratory

Americans used less energy in 2011 than in the previous year due mainly to a shift to higher-efficiency energy technologies in the transportation and residential sectors. Meanwhile, less coal was used but more natural gas was consumed according to the most recent energy flow charts released by Lawrence Livermore National Laboratory.

Related Articles


Wind power saw the biggest jump from .92 quadrillion BTU, or quads, in 2010 up to 1.17 quads in 2011. (BTU or British Thermal Unit is a unit of measurement for energy and is equivalent to about 1.055 kilojoules).

"Wind energy jumped significantly because, as in previous years, many new wind farms came online," said A.J. Simon, an LLNL energy systems analyst who develops the flow charts using data provided by the Department of Energy's Energy Information Administration. "This is the result of sustained investment in wind power."

Hydroelectricity also saw an increase going from 2.51 quads in 2010 up to 3.17 quads in 2011.

Hydroelectricity jumped significantly in 2011 because 2011 saw large amounts of precipitation in the Western U.S. Hydroelectric dams were able to produce at their maximum levels while keeping reservoirs full. Similar levels of hydroelectric production were seen in 1997, 1998 and 1999 due to wet years.

Overall, U.S. energy use in 2011 equaled 97.3 quads compared to the 98 quads used in 2010. Most of the energy was tied to coal, natural gas and petroleum.

From 2010 to 2011, use of coal fell dramatically, use of oil (petroleum) fell slightly and use of natural gas increased slightly from 24.65 quads in 2010 to 26.9 quads in 2011.

"Sustained low natural gas prices have prompted a shift from coal to gas in the electricity generating sector," Simon said. "Sustained high oil prices have likely driven the decline in oil use over the past 5 years as people choose to drive less and purchase automobiles that get more miles per gallon."

The majority of energy use in 2011 was used for electricity generation (39.2 quads), followed by transportation, industrial, commercial and residential consumption. However, energy use in the residential, commercial and transportation sectors decreased while industrial energy use increased if only slightly.

"With the advent of shale gas, it appears that natural gas prices in the United States may remain lower than their historical averages for many years into the future," Simon said. "This has prompted many gas users in the industrial and electricity generating sector to switch from coal or oil to natural gas when it is technically possible, but might not have been economical at higher gas prices."


Story Source:

The above story is based on materials provided by DOE/Lawrence Livermore National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

DOE/Lawrence Livermore National Laboratory. "Americans use more efficient and renewable energy technologies." ScienceDaily. ScienceDaily, 24 October 2012. <www.sciencedaily.com/releases/2012/10/121024150805.htm>.
DOE/Lawrence Livermore National Laboratory. (2012, October 24). Americans use more efficient and renewable energy technologies. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2012/10/121024150805.htm
DOE/Lawrence Livermore National Laboratory. "Americans use more efficient and renewable energy technologies." ScienceDaily. www.sciencedaily.com/releases/2012/10/121024150805.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins