Showing posts with label wind energy. Show all posts
Showing posts with label wind energy. Show all posts

Thursday, September 18, 2008

Introducing, the "Energy Ball"

Energy Ball, by Home Energy International. These windmills are claimed to be 40% more efficient than regular propeller windmills of similar size. The two meter version can supply 1,750 KWh per year, which would supply a little over 15% of the average US households energy usage. They cost anywhere from 3 to 7.5 thousand dollars each (without installation). The catch, they should be installed about 40 feet above ground level and away from trees. No telling whether the loss of tree cover during the summer time -- which helps shield your house and thereby cools it down resulting in less energy usage -- would offset the energy balls usefulness.

Tuesday, August 26, 2008

Wind Turbines == Bat Killing Machines

Windturbines cause barotrauma in bats.
Ninety percent of the bats they examined after death showed signs of internal hemorrhaging consistent with trauma from the sudden drop in air pressure (a condition known as barotrauma) at turbine blades. Only about half of the bats showed any evidence of direct contact with the blades.
So?
The majority of bats killed at wind turbines are migratory bats that roost in trees, including hoary bats, eastern red bats, and silver-haired bats. While little is known about their population sizes, the researchers said, those deaths could have far-reaching consequences.

Bats typically live for many years, in some cases reaching ages of 30 or more. Most also have just one or two pups at a time, and not necessarily every year. "Slow reproductive rates can limit a population's ability to recover from crashes and thereby increase the risk of endangerment or extinction," said Robert Barclay, also at the University of Calgary, noting that migrating animals tend to be more vulnerable as it is.

All three species of migratory bats killed by wind turbines fly at night, eating thousands of insects—including many crop pests—per day as they go. Therefore, bat losses in one area could have very real effects on ecosystems miles away, along the bats' migration routes.

Tuesday, July 08, 2008

Pickens Picks Wind and Natural Gas

"The Pickens Plan."
"The Pickens Plan" calls for investing in domestic renewable resources such as wind, and switching from oil to natural gas as a transportation fuel.
On the wind side of things:
Pickens' company, Mesa Power, recently announced a $2 billion investment as the first step in a multibillion-dollar plan to build the world's largest wind farm in Pampa, Texas.

Pickens said Tuesday that if the United States takes advantage of the so-called "wind corridor," stretching from the Canadian border to West Texas, energy from wind turbines built there could supply 20 percent or more of the nation's power. He suggested the project could be funded by private investors.
And on the natural gas side of things:
Fueling these plants with wind power would then free up the natural gas historically used to power them, and would mean that natural gas could replace foreign oil as fuel for motor vehicles, he said.

Using natural gas for transportation needs could replace one-third of the United States' imported oil and would save more than $230 billion a year, Pickens said.
So how long until we can see the effect of these changes?
His energy plan could be implemented within 10 years if both Congress and the White House treat the current energy situation as a "national emergency and take immediate action," he predicted.
We better get started.