Tag: wind turbines

Clearing the Air for Wind Turbines

  • Wind turbines can capture the power of wind along ridgelines, but environmentalists worry government restrictions are not strong enough to protect birds that fly along the ridgelines. (Photo by Lisa Ann Pinkerton)

The process for protecting wildlife from new wind turbines varies by state and sometimes within states. Lisa Ann Pinkerton reports wind developers and the
federal government say that is hindering the nation’s ability to take advantage of this renewable energy:

Transcript

The process for protecting wildlife from new wind turbines varies by state and sometimes within states. Lisa Ann Pinkerton reports wind developers and the
federal government say that is hindering the nation’s ability to take advantage of this renewable energy:


The federal government is looking into wind turbine guidelines on two states,
California and Pennsylvania, and they couldn’t be more different. California’s
guidelines restrict wind farms from certain areas and hold them responsible
for the deaths of any wildlife, such as birds that run into the spinning blades.


In Pennsylvania, the guidelines are voluntary and if they’re followed, they exempt the wind
turbine developers from fines for wildlife deaths. Along the western edge of
the Appalachians there’s a ridgeline that stretches from the top of
Pennsylvania all the way to Maryland. There are breathtaking views of rolling
hills and farmland.


And we’re at one lookout point, called Shaffer Mountain. Veterinarian Tom Dick is
here counting migrating birds for the Audubon Society. Watching a pair of
broad wing hawks soar by, he says the wind here creates invisible highways:


“The wind is coming out just right, they found the lane, they’re making no
movement at all. They have a long migration to central and South America, and they
want to make it as effortless as possible, so they’re using the energy of the wind.”


That wind energy is attractive to wind turbine developers, too. Less than a
mile away, the Spanish wind turbine manufacturer, Gamesa plans to build a
30-turbine wind farm.


Tom Dick is against the project. He says the US Fish and Wildlife Service
discourages wind farms on migratory corridors like Shaffer Mountain:


“They just don’t want to see them on there, but there’s no teeth in the laws today.”


The laws Dick refers to is called a “Voluntary Agreement.” And nearly every Wind
Developer in the US has signed on. They agree to work closely with the state
conservation agencies to reduce impacts to wildlife. And in exchange,
Pennsylvania shields developers from liability if animals happen to die as a
result of the proposed wind farm.


Developers like this working relationship with Pennsylvania’s Game
Commission. They know what’s expected of them and they can adjust their
plans as wildlife problems arise. Tim Volk is Gamesa’s Shaffer Mountain
Project Coordinator and he says spring bird migration data the state required, has
already reshaped the project:


“So that lead us to set some of our windmills back about 400 feet to avoid any
potential impact to them.”


Critics say protecting developers from liability rather than protecting wildlife
from death is the opposite of what Pennsylvania should be doing. But
advocates for renewable energy say without such assurances, wind
development in the US will never live up to its potential.


Mark Sinclair heads the Clean Energy States Alliance:


“Every wind project is going to kill a couple of birds. It will happen. The problem right
now is that these wildlife laws are so strict, they really create a financial and
development challenge for wind projects.”


Sinclair says Pennsylvania’s system is the best in the nation, while guidelines
recently released in California might hinder development there:


“There’s less of incentive in California for a developer to follow these guidelines, because, what do I
get out of it? No permit and no guarantee the state won’t go after me for killing
several birds unintentionally.”


California’s guidelines are intended to assist local governments in deciding
where turbines should and should not go, but to use them is optional, and
wind turbine developers still responsible if they end up killing a lot of birds.


Everyone acknowledges that federal guidelines are needed and while some states
want more protection for their wildlife, other states like Texas don’t consider it
an issue. So for the next two years, a federal committee plans to weigh all
the options. It’s made up of representatives from various states, the wind
industry, the Audubon Society, and research scientists. Whatever
guidelines the committee develops, US Fish and Wildlife officials predict the
protection from liability that Pennsylvania has established will play a
prominent role.


For the Environment Report, I’m Lisa Ann Pinkerton.

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Guidelines for Windmills

  • Wind farms are being constructed across the nation. Experts think there should be clear criteria about how they're built. (Photo by Lester Graham)

A new study says more planning and
guidelines are needed to put wind energy
farms in the right places. Chuck Quirmbach
reports… windmills are sometimes built in
migrating bird flyways or block scenic views:

Transcript

A new study says more planning and
guidelines are needed to put wind energy
farms in the right places. Chuck Quirmbach
reports… windmills are sometimes built in
migrating bird flyways or block scenic views:


Wind energy generation has been growing and the growth is expected to
continue. A report by the National Research Council predicts that by
the year 2020, wind energy will offset the increase in carbon dioxide
pollution from coal-burning power plants by almost 5 percent. But wind
turbines can disturb wildlife and to some people, be an eyesore. So the
new report recommends that regulators adopt an evaluation guide for
proposed projects.


Study director David Policansky says the guide should make it easier to
site wind farms:


“So even if following that guide leads people to avoid some areas, we
believe that following the guide will just rationalize the process and
make it more streamlined and effective for everybody.”


The study also urges governments to work together to analyze the
cumulative effect of wind projects.


For the Environment Report, I’m Chuck Quirmbach.

Related Links

Untapped Power in Offshore Wind Turbines?

  • Developers want to put wind turbines in offshore locations like Lake Ontario and off the coast of Massachusetts. (Photo by David Orsborne)

The U.S. Department of Energy wants 20 percent of the country’s electricity supply to eventually come from wind power. Some of that power could come from wind turbines located on the water. The GLRC’s Chuck Quirmbach reports some power companies are hesitating:

Transcript

The U.S. Department of Energy wants 20 percent of the country’s
electricity supply to eventually come from wind power. Some of that
power could come from wind turbines located on the water. The
GLRC’s Chuck Quirmbach reports some power companies are hesitating:


Until recently, the strength of the wind on the water was mainly of
interest to the shipping industry, anglers, and to people who like
to sail.


(Sound of sail ruffling and folding)


Lee Konczak is folding up the sail on a small sailboat that he often
takes out into Lake Michigan. Konczak says he likes the serenity of
riding on the wind and the beautiful view from offshore. Even so, he
says he wouldn’t mind if the view included a few wind turbines:


“With energy certainly being at the top of the news practically on a
daily basis right now, and with limited resources, I think an
experimental kind of thing with wind turbines would be excellent.”


Some wind power companies are planning more than a small
experiment. An effort is underway to put up 140 wind turbines in Lake
Ontario and another developer wants a wind farm off the coast of
Massachusetts. The industry would like to develop more projects. It
says the US is behind some European countries when it comes to
going offshore for wind. Compared to the US, European countries are
short on fossil fuel supplies and they don’t have as much land. So
they began placing turbines offshore a few years ago.


John Dunlop is with the American Wind Energy Association. He says the land-based
wind turbines in the US and Canada are important but often trigger local
disputes over new overhead transmission lines. Dunlop says lake-based
wind turbines would avoid some political squabbles by being close to
many cities:


“We enjoy living next to water, so consequently our population centers
tend to be close to the water which means a lake-based installation
may be no more than 10-20 miles away from that load center. Now, to get
that energy, that electricity from that wind project back to the city
you do need to have underwater cabling, but that’s a fairly common
technology so that’s not a huge impediment or a huge cost.”


Several environmental groups are getting on board with the idea of
putting wind farms in waterways. Charlie Higley is with the Citizens’
Utility Board in Wisconsin. He says there are already many coal and
nuclear plants near the water:


“Both of those have huge environmental and economic costs
associated with them, so we’re supportive of the development of
wind, not only on land but we really think the time is now to
start looking at developing wind resources on Lake Michigan.”


Higley acknowledges some people may not like the look of wind
turbines if they’re installed within view of the shoreline. Other
supporters concede there also needs to be more study of wind speeds
over the water. They also say there needs to be a cheaper way to fix
turbines that break down in waters dozens of feet deep.


Walt Musial helps oversee offshore wind projects at the National Renewable Energy
Lab. He says getting to a turbine in water is no easy task:


“You can’t drive a truck, so you have to drive a boat, or perhaps a helicopter like they do
in Europe. These add costs as well, and so these methods of accessing turbines have to be
developed and minimized.”


Still, Musial says because the Energy Department’s long-term goal is
to promote more wind production, he predicts some of that wind power
will come from offshore. But for now, the uncertainties have many
power companies rooted in inland turbines.


Kim Zuhlke is with Alliant Energy. He says his firm prefers a place
like Iowa, where there are already 800 wind turbines and a
desire from public officials to have more:


“You couple the acceptance, the economic growth, existing
transmission, all of those things together make it a logical place
for us to go.”


Still, Zuhlke says offshore wind turbines in the U.S. may become
a reality. He says engineers have to perfect a turbine that provides a big
enough payback for the additional expense of putting something way out in
the water.


For the GLRC, I’m Chuck Quirmbach

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Wind Energy Sweeping Away Wildlife?

  • A single wind turbine can change air currents, creating dangerous winds for birds and other airborne wildlife. (Photo by Michael Tyas)

Wind energy is one of the fastest growing sources of new electricity in the United States. For some environmentalists, that’s
good news. Wind turbines don’t spew smoke into the air. There’s no nuclear by-product. But there is an environmental risk. To see it, you have to view the wind turbines through the eyes of a bird.
The GLRC’s Dustin Dwyer has more:

Transcript

Wind energy is one of the fastest growing sources of new electricity in the United States.
For some environmentalists, that’s good news. Wind turbines don’t spew smoke into the
air. There’s no nuclear byproduct. But there is an environmental risk. To see it, you
have to view the wind turbines through the eyes of a bird. The GLRC’s Dustin Dwyer
has more:


Chandler Robbins has spent a lot of time studying how birds kill themselves. He says he
would go out on windy nights to the Washington Monument in Washington, D.C. He’d
stand at the bottom of the 555 foot tall obelisk and watch the birds at the top:


“Just as they get to the tower, they just go around the edge of it and bang, the turbulence
from the winds going around the tower, sweeps those birds against the tower, and they’re
killed.”


Speaking at a conference, Robbins tells the crowd he once watched more than 500 birds
slam into the monument in one night, and that monument is standing still. Now imagine
wind turbines, some of them about as tall as the Washington Monument, with spinning
blades that reach nearly a football field in diameter.


Alex Hoar is with the U.S. Fish and Wildlife Service. He says a single turbine can now
change air currents for three acres around the turbine itself:


“So, if you put up a hundred turbines, the blades are sweeping 300 acres. So, that’s a large
space. And what we don’t know is when are birds and bats at risk.”


We don’t know because no one has really studied it. Both Alex Hoar and Chandler
Robbins say scientists know a lot about where birds take off and where they land. They
know about migration patterns, but they don’t know about what birds do, or where they
go while they’re in the air.


So, with more wind farms being built across the country, it’s not clear what affect they
might have on bird populations, but some suspect it won’t be good. Peter Kailing works
with an environmental consulting company. He recently did an environmental impact
study for a new 47 hundred acre commercial wind farm in Michigan. He says scientists
can learn a lot from the wind farms that have already been built. He says the ones that
have done the most damage to wildlife have a few things in common:


“The turbine was in a narrow valley, or a mountain-pass, or on the edge of a large
water body with steep wooded cover that was used by migrating songbirds, there’s almost
always a topographical association.”


Weather also plays a role. Peter Kailing and others say that birds tend to avoid cloud
banks by flying under them. That could put them in the path of turbine blades. So, one
way to limit damage would be to shut the turbines down on cloudy days.


Chandler Robbins says better technology could also limit damage. He says turbine blades
could be equipped with sensors:


“If a bird or a bat collided with that blade, it would set up enough vibration so that the
blade could be feathered temporarily to avoid other birds striking until the immediate
problem is over.”


Feathering essentially means that you twist the angle of the blade so that wind passes
over it, rather than pushing the blade into a spin. That way, birds aren’t sucked into it.
It’s basically the turbine’s braking system. Some say you don’t even need a sensor on the
turbine. They say engineers could monitor radar and thermal imaging. That would tell
them if any migrating birds are in the area, and if they are, feather the blades.


Of course, the absolute safest solution in the short term might be just to stop building
wind farms, but you’d be hard-pressed to find anyone who thinks that’s a good idea.
Most seem to realize that any way of making electricity will have some impact on the
environment. The question is what can be done with each of them to minimize the risk.
With wind energy, that work is just getting started.


For the GLRC, I’m Dustin Dwyer.

Related Links

Wind Power Expands With Deregulation

According to the Worldwatch Institute, wind power is the fastest
growing energy source in the world – growing at an annual rate of 22%.
Here in the U-S, the Midwest accounted for most of this country’s wind
energy growth. The Great Lakes Radio Consortium’s David Hammond reports
that energy deregulation is fueling much of this development: