Study suggests real-world generating capacity of wind farms at large scales has been overestimated
Research by Harvard professor David Keith suggests that the global capacity for energy generation from wind power has been overestimated, and that geophysical / climate effects of turbines will reduce the ...
Toward super-size wind turbines: Bigger wind turbines do make greener electricity
In a study that could solidify the trend toward construction of gigantic windmills, scientists have concluded that the larger the wind turbine, the greener the electricity it produces. Their report appears ...
Delft professor puts kites high on list for renewable energy
Enough wind to power global energy demand, new research says
There is enough energy available in winds to meet all of the world's demand. Atmospheric turbines that convert steadier and faster high-altitude winds into energy could generate even more power than ground- ...
Denmark champions wind power, sets record
Electric-car Nemesis at top speeds is record-breaker
The secrets of owls' near noiseless wings
Many owl species have developed specialized plumage to effectively eliminate the aerodynamic noise from their wings – allowing them to hunt and capture their prey in silence.
New study reveals unexpected disappearance of superconducting fluctuations at super-cold temperatures
(Phys.org)—The next generation of sustainable energy systems, from magnetic storage to offshore wind turbines, hinges in part on high-temperature superconductors (HTS), which can carry current with zero ...
Vestas says record powerful wind turbine in operation
Danish wind technology giant Vestas said on Thursday that the world's most powerful wind turbine has begun operating, sweeping an area equivalent to three football fields.
How offshore wind turbines could be more efficient
A Cambridge University study suggests that offshore wind farms could be 100 per cent more efficient in terms of energy payback if manufacturers embraced new methods for making the structures that support ...
Hitachi unveils motor without 'rare earths'
Japanese high-tech firm Hitachi Wednesday unveiled an electric motor that does not use "rare earths", aiming to cut costs and reduce dependence on imports of the scarce minerals from China.
Buoyant Airborne Turbine to harness winds in Alaska
Clean energy could lead to scarce materials
As the world moves toward greater use of low-carbon and zero-carbon energy sources, a possible bottleneck looms, according to a new MIT study: the supply of certain metals needed for key clean-energy technologies.
Scientists spark new interest in the century-old Edison battery
Stanford University scientists have breathed new life into the nickel-iron battery, a rechargeable technology developed by Thomas Edison more than a century ago.