the competitiveness of American production of clean energy products, the Energy
Department is supporting the development of wind turbines with blades longer
than 60 meters (almost 200 feet). The
larger turbine blades will be used in the
implementation of new multi-megawatt
wind turbines that will produce more
energy than current systems.
The DOE notes that the development
of taller turbines with longer blades could
potentially harness another one million
square miles of the U.S., which is about
triple the amount of land that was accessible to solar technology in 2008.
For more on renewable energy, read The
Next Generation of Wind on page 24 to
learn about vertical axis turbines. B
Considering wind but haven’t taken the plunge? New developments for
funding options and motor efficiency are
helping this renewable source to become
n If cost is a barrier, consider a power
purchase agreement (PPAs). Over 23%
of all wind power contracts in 2014 were
signed by corporate purchasers and other
groups, such as government agencies and
universities, finds the American Wind Energy Association (AWEA) in its U.S. Wind
Industry Annual Market Report.
In total, more than 1,770 MW of wind
PPAs have been signed. These include
major companies such as Amazon, Dow
Chemical, Google, IKEA, Mars, Microsoft,
and Yahoo. In the non-profit and government sectors, the U.S.
General Services Administration (GSA), the U.S. Air
Force, Cornell University,
Ohio State University, and
Oklahoma State University
have all invested in wind
n An alternative magnetic
alloy could also significantly
drive down turbine costs by
replacing traditional rare-earth permanent magnets.
Scientists at the DOE’s
Ames Laboratory have
demonstrated that cerium,
an abundant rare earth element, retains its magnetic
qualities at high temperatures. With a little help from
cobalt, the material can take
the place of dysprosium, a
cerium-enhanced alloy is at
least 20-40% cheaper than
Finding a comparable
substitute material is key to
reducing manufacturing reliance on dysprosium as the
current demand for it outpaces mining and recycling
sources for it, according to
the Ames Lab.
n As part of the Clean
Energy Manufacturing Initia-
tive, which seeks to improve
Leaps and Bounds for Wind Energy
FREE INFO: Circle 111 on Reader Service card
With cooling from 1-12 tons
and the ability to customize units
to whatever size you need,
Spot Coolers brings you instant,
cost-effective, cool relief!
We’re available every day, all day,
365 days a year! Give us a call!
MovinCool, SpotCool and Office Pro
are registered trademarks
of DENSO Corporation.
RENTALS & SALES