Advertisement
more top stories »

Alternative Energy


— Good Thinking

London Christmas tree powered by a Brussels sprout battery

By - December 13, 2013 15 Pictures
You've probably seen a light powered by a lemon or a clock hooked up to a potato before, but a group in London recently built a similar device using a much smaller, less popular piece of produce. To promote The Big Bang UK Young Scientists & Engineers Fair, a team of designers built the world's first Brussels sprout-powered battery and hooked it up to a set of Christmas tree lights. Read More
— Environment

Low-cost system uses passing vehicles to generate electricity

By - December 2, 2013 2 Pictures
Over the years, various researchers have developed systems in which the weight transferred through cars' wheels onto the road – or through pedestrians' feet onto the sidewalk – is used to generate electricity. These systems utilize piezoelectric materials, which convert mechanical stress into an electrical current. Such materials may be effective, but they're also too expensive for use in many parts of the world. That's why Mexican entrepreneur Héctor Ricardo Macías Hernández created his own rather ingenious alternative. Read More
— Environment

Making the most of low-grade silicon for cheaper, more efficient solar panels

By - May 7, 2013 1 Picture
While we wait for affordable multi-junction solar cells that are pushing past the 40 percent conversion efficiency mark to make it out of the lab and onto our roofs, we have to make do with standard commercial silicon cells that currently max out at around 19 percent. A team from the University of New South Wales in Australia has found a way to improve the quality of low-grade silicon, enabling higher efficiency solar cells to be produced from cheaper, low-grade silicon. Read More
— Environment

World’s largest OTEC power plant planned for China

By - April 18, 2013 4 Pictures
Lockheed Martin has been getting its feet wet in the renewable energy game for some time. In the 1970s it helped build the world’s first successful floating Ocean Thermal Energy Conversion (OTEC) system that generated net power, and in 2009 it was awarded a contract to develop an OTEC pilot plant in Hawaii. That project has apparently been canceled but the company has now shifted its OTEC sights westward by teaming up with Hong Kong-based Reignwood Group to co-develop a pilot plant that will be built off the coast of southern China. Read More
— Science

Hybrid solar system boosts natural gas powerplant efficiency by 20 percent

By - April 17, 2013 3 Pictures
Solar power holds the promise of clean, limitless energy, but it currently suffers from high costs and an inherent disadvantage of not working when the sun isn't shining. The Department of Energy's Pacific Northwest National Laboratory is taking a best-of-both-worlds approach by developing a hybrid solar/gas system that increases the efficiency and reduces the carbon footprint of natural gas power plants. Read More
— Environment

Spectrolab claims record efficiency for new solar cell

By - April 9, 2013 1 Picture
Spectrolab, a Boeing subsidiary known for the manufacture of solar cells for satellites and spacecraft, has in recent years turned its attention to terrestrial solar cells to tap into the expanding alternative energy market. Now the California-based company has claimed a new solar cell efficiency record of 37.8 percent for a ground-based multi-junction cell without solar concentration. Read More
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement