Subscribe free to our newsletters via your
. Earth Science News .

Subscribe free to our newsletters via your

Hydrogen Could Help Halve Global Carbon Emissions By 2050

File photo of Honda's new FCX hydrogen fuel cell car.

Paris (AFP) Dec 01, 2005
Aggressively expanding the use of hydrogen and other cleaner energies could halve emissions of carbon dioxide (CO2), the main greenhouse gas, by 2050, the International Energy Agency (IEA) said here Thursday.

In a report coinciding with a key UN conference on global warming, the IEA said that if conditions were right, hydrogen and hydrogen fuel cells could play key roles in weaning energy users away from oil, gas and coal.

"In the most favourable conditions, hydrogen fuel cell vehicles would enter the market (in mass numbers) around 2025 and power 30 percent of the global stock of vehicles by 2050 -- the equivalent of about 700 million vehicles," the IEA said.

"The oil saving would then be equivalent to some 13 percent of global oil demand, or five percent of the global energy demand."

If hydrogen power takes off and other emerging technologies are brought in, the annual global output of CO2 could be halved by the middle of the century, it said.

The fuel cell, invented in 1839 by British physicist William Grove, produces electricity thanks to a catalyst-assisted reaction between hydrogen and oxygen. Its only pollution is water.

The problem, though, is cost. At present, a fuel cell costs 2,000 dollars per kilowatt of energy produced, compared with 50 dollars per kilowatt for conventional car engines today.

Another big challenge is reducing the cost of obtaining hydrogen itself, which has to be extracted from fossil fuels, such as carbon, or from water.

"In the next few decades, hydrogen costs need to be reduced three to tenfold and fuel cell costs by 10 to 50-fold," the IEA said in a press release.

"Substantial improvements are also needed in hydrogen transportation and storage and fuel cell performance. At the same time, governments need to implement decisive policies and incentives to promote emission savings and diversify the energy supply."

The IEA steered away from specifying whether governments should take a tougher regulatory approach, as opposed to a voluntary one, to help the switch to the use of hydrogen.

"Governments should adopt strong policies to reduce emissions (and) we have to reduce drastically the cost of those technologies," said Giorgio Simbolotti, a co-author of the IEA study, Prospects for Hydrogen and Fuel Cells.

"If these two conditions are not met, it would be very difficult for hydrogen to reach the critical mass needed for market uptake."

Environmentalists and energy experts say that new energy sources can only succeed if there is a high but sustained price for fossil fuels, or if there are tough laws that, for instance, require greater fuel efficiency, lower carbon pollution or widen access to hydrogen at filling stations.

The IEA will present the report next Monday in Montreal at a conference of the UN Framework Convention on Climate Change (UNFCCC), which is focussing on ways to reduce pollution of "greenhouse" gases that trap heat from the Sun.

Related Links
Search SpaceDaily
Subscribe To SpaceDaily Express

Crystal Sponges Excel At Sopping Up CO2
Ann Arbor MI (SPX) Dec 01, 2005
Since the Industrial Revolution, levels of carbon dioxide---a major contributor to the greenhouse effect---have been on the rise, prompting scientists to search for ways of counteracting the trend. One of the main strategies is removing carbon dioxide (CO2) from the flue exhaust of power plants, using porous materials that take up the gas as it travels up the flue.

  • Fear And Cold Intensify In Pakistan Quake Camps
  • Winter Trebles Illnesses In Pakistan Quake Zone
  • Three Months After Katrina New Orleans Still In The Dark
  • Cash Aid Beats Supplies After Disasters: Study

  • Crystal Sponges Excel At Sopping Up CO2
  • Hydrogen Could Help Halve Global Carbon Emissions By 2050
  • Kyoto Climate Accord Becomes Operational
  • Scientific Values Are Threatened By Climate Change Denial Lobby, Claims Lord May

  • Landsat 5 Back-Up Solar Array Drive Having Technical Problems
  • New Model Protects Wetlands Of The Future
  • Earth From Space: Aircraft Contrails Over The United States
  • Envisat Monitors China's Largest Lake, Rivers Flooding

  • Norway And Britain To Cooperate On Underwater CO2 Storage
  • Canadian Technology To Reduce Emissions Around The World
  • Russia Gives Green Light To Siberia-Pacific Pipeline
  • Airline, Auto Sectors Ripe For Carbon Market: IEA

  • Needle Free Immunizations
  • The Changing Face Of AIDS
  • New Bird Flu Outbreaks As Blogs Fear FEMA Repeat
  • UN Expands Battle Against Bird Flu

  • Florida School Evolution Conflict Delayed
  • No Safe Ground For Life To Stand On During Largest Mass Extinction
  • Species Take Care Of Each Other In Ecological Communities
  • Chinese Ivory Demand Threatens Central Africian Elephants

  • China To Let UN Experts Inspect Toxic Slick
  • Nightmare On Songhua River Shocks China Out Of Eco Complacency
  • Russian Ecologists Warn Of Long Term Threat From Chinese Slick
  • Schools Reopen In Harbin As China Vows To Go All Out To Help Russia

  • Distinct Brain Regions Specialized For Faces And Bodies
  • NSF Funds Probe Of The Quintessence Of Surprise
  • Imaging Technique Visualizes Effects Of Stress On Human Brain
  • New Study Posits Evolutionary Origins Of Two Distinct Types Of Laughter

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement