In the tense debate between energy security and environmental sustainability, Canada

Power generation from renewable sources such as wind turbines, solar cells and biomass plays a small but important part in satisfying total electricity demand around the world, and is growing at an exponential rate thanks to generous public subsidies and government support.

Every household in Britain should by 2020 be able to cut its energy bills and carbon footprint using "smart meters" and handheld devices to control energy use closely, the government said on Monday.

US Commerce Secretary Gary Locke said on Friday he will travel to China this year to promote sales of US clean energy goods as part of the Obama administration's effort to fight global warming.

"This would be a win-win for jobs in the United States, as well as addressing a very serious problem of the planet," Locke told Reuters in an interview.

PRESIDENT OBAMA and the other leaders at the Group of 20 meeting last month vowed to both pursue a

Wave energy could catch up with commercially more advanced offshore wind power within five years, the head of pioneers Aquamarine Power Ltd told Reuters.

"What it took 25 years to do in the wind industry, we want to do in five years," Chief Executive Officer Martin McAdam said in an interview.

U.S. lawmakers introduced legislation this week that would establish a new independent agency to spearhead government clean energy investments.

The bipartisan bill, introduced by Senate Energy and Natural Resources Committee Chairman Jeff Bingaman and ranking member Lisa Murkowski, would establish a Clean Energy Deployment Administration within the Energy Department.