Featured Research

from universities, journals, and other organizations

Low-Carbon Electricity is Needed To Power Plug-in Hybrids

Date:
April 28, 2008
Source:
Carnegie Mellon University
Summary:
Engineering researchers report that plug-in hybrid electric vehicles could help reduce greenhouse gas emissions that fuel global warming, but the benefits are highly dependent on how the electricity system changes in the coming decades.

Carnegie Mellon University's Constantine Samaras and Kyle Meisterling report that plug-in hybrid electric vehicles could help reduce greenhouse gas emissions that fuel global warming, but the benefits are highly dependent on how the electricity system changes in the coming decades.

In a recent article in the journal Environmental Science and Technology, the authors urge federal legislators and the electricity industry to increase the deployment of low-carbon electricity technology to power plug-in hybrid vehicles.

"Plug-in hybrids represent an opportunity to reduce oil consumption, leverage next-generation biofuels and reduce greenhouse gas emissions. The types of power plants installed in the next two decades will not only affect how much we can reduce emissions from electricity, but also from vehicles if we plan on plug-in hybrids playing a substantial role," said Samaras, a Ph.D. candidate in Carnegie Mellon's departments of Engineering and Public Policy (EPP) and Civil and Environmental Engineering (CEE).

"We are finding that even when the impacts from producing batteries are included, plug-in hybrids still produce slightly less greenhouse gases than hybrids that run only on gasoline. But plug-in hybrids could cut emissions in half if they are charged with electricity from low-carbon sources," said Meisterling, a Ph.D. candidate in EPP.

Already, automakers have discussed plans to develop plug-in hybrids and California recently ruled that the auto industry must sell nearly 60,000 plug-ins statewide by 2014. With the price of gas heading beyond $4 per gallon, interest in alternative vehicles continues to grow. Samaras and Meisterling also say plug-ins may allow greater use of the limited supply of biofuels because they use a lot less gasoline than regular cars.

The researchers found that life cycle greenhouse gas emissions from plug-in hybrids are about one-third less than a traditional gasoline-powered car. They also argue that with coal-fired electricity, emissions from plug-in hybrids are still lower than traditional cars, but are higher than ordinary hybrids. The call for increased low-carbon electricity supplies comes at a time when the U.S. electricity industry plans to build 154 new coal plants in the next 24 years to replace older plants being phased out.

"The type of power plants we build today will be around for a long time. We need to begin developing policies that allow us to make big dents in oil dependence and greenhouse gas emissions," said Samaras, the recipient of a prestigious Teresa Heinz Fellowship for Environmental Research, which she is using to analyze public policies involving plug-in hybrids and low-carbon electricity.

Additional research support for this project came from the National Science Foundation (NSF) through the Climate Decision Making Center and the Electric Power Research Institute, and from the Alfred P. Sloan Foundation through Carnegie Mellon's Electricity Industry Center.


Story Source:

The above story is based on materials provided by Carnegie Mellon University. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Mellon University. "Low-Carbon Electricity is Needed To Power Plug-in Hybrids." ScienceDaily. ScienceDaily, 28 April 2008. <www.sciencedaily.com/releases/2008/04/080425163711.htm>.
Carnegie Mellon University. (2008, April 28). Low-Carbon Electricity is Needed To Power Plug-in Hybrids. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2008/04/080425163711.htm
Carnegie Mellon University. "Low-Carbon Electricity is Needed To Power Plug-in Hybrids." ScienceDaily. www.sciencedaily.com/releases/2008/04/080425163711.htm (accessed October 23, 2014).

Share This



More Earth & Climate News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

San Diego Zoo's White Rhinos Provide Hope for the Critically Endangered Species

San Diego Zoo's White Rhinos Provide Hope for the Critically Endangered Species

Reuters - Light News Video Online (Oct. 22, 2014) — The pair of rare white northern rhinos bring hope for their species as only six remain in the world. Elly Park reports. Video provided by Reuters
Powered by NewsLook.com
Trick-or-Treating Banned Because of Polar Bears

Trick-or-Treating Banned Because of Polar Bears

Buzz60 (Oct. 21, 2014) — Mother Nature is pulling a trick on the kids of Arviat, Canada. As Mara Montalbano (@maramontalbano) tells us, the effects of global warming caused the town to ban trick-or-treating this Halloween. Video provided by Buzz60
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) — He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
How Detroit's Money Woes Led To U.N.-Condemned Water Cutoffs

How Detroit's Money Woes Led To U.N.-Condemned Water Cutoffs

Newsy (Oct. 20, 2014) — The United Nations says water is a human right, but should it be free? Detroit has cut off water to residents who can't pay, and the U.N. isn't happy. 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