News tagged with renewable energy sources

How affordable is alternative energy?

Alternative energy sources that are cost-competitive with fossil fuels may be closer than most people realize. Recent renewable energy research has shown that solar, hydropower, wind and other alternative sources are closing ...

Aug 01, 2012
4.7 / 5 (3) 16

Making mirrors for the sun

With $1.5 million from the Department of Energy, University of Arizona researchers are continuing to improve groundbreaking technology to produce solar electricity at a price competitive with non-renewable ...

Jul 06, 2012
3 / 5 (4) 1

Building a sustainable hydrogen economy

The concept of the hydrogen economy (HE), in which hydrogen would replace the carbon-based fossil fuels of the twentieth century was first mooted in the 1970s. Today, HE is seen as a potential solution to the dual global ...

Dec 08, 2011
3.7 / 5 (3) 18