Advertisement
more top stories »

Alternative Energy


— Environment

Researcher looks into wastewater zooplankton as biofuel feedstock

With dwindling non-renewable fuel sources creating an enormous energy challenge, the search is on to develop sustainable, renewable types of energy such as solar, wind and biofuel. One of the recent developments in this field comes from New York's Clarkson University, where new findings suggest that small organisms found in wastewater treatment lagoons could be used as biofuel feedstock. Read More
— Good Thinking

London Christmas tree powered by a Brussels sprout battery

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

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

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

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

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
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement