Dear Congressman Peter Welch (Vt.) --
Your concern about climate change is not served by your sponsorship of H.R. 969 to establish a national RPS.
Since most of the lobbying in favor of this bill is by the industry group American Wind Energy Association, we can assume that most of the 20% renewables would be from wind. Wind on the grid is problematic, because of its high variability and significant unpredictability. It can not provide capacity, so it can not replace other plants. And its ramping and startup burden on those plants causes them to burn more fuel, which cancels to a great extent their being used less (if they are not simply switched to "spinning standby" -- burning fuel but not generating electricity).
Thus, a utility may provide 20% of its electricity from wind, but without anywhere near a corresponding reduction in fossil fuel burning.
Unlike the Safe Climate Act of 2007, H.R. 969 will not reduce greenhouse gas emissions. It is unlikely even to reduce their growth significantly.
Please reconsider your sponsorship of H.R. 969 and vote AGAINST it.
[Track the bill at govtrack.us.]
wind power, wind energy, wind farms, environment, environmentalism, Vermont
July 28, 2007
July 26, 2007
Worldwatch makes erroneous carbon savings claims for wind
A July 25 press release from the Worldwatch Institute claims that "2006 Wind installations offset more than 40 million tons of CO2":
First, a more objective source than the industry itself for the average capacity factor for wind energy facilities in the U.S. is the U.S. Energy Information Administration. According to their Annual Energy Outlook 2007, the capacity factor for wind was 21% in 2005. The AWEA's figures of 34% is promotional spiel and not based on actual data.
Second, there are other sources of electricity on the grid besides coal, including relatively cleaner-burning natural gas and carbon-free nuclear and hydro. At the least, the relative contributions of these sources must be considered. The renewable energy certifier Green-E, has recently proposed to value renewable energy output in terms of actual greenhouse gas emissions from the equivalent output by the rest of the grid.
By Green-E's calculations, the total greenhouse gas (not just CO2) emissions for different grid regions range from about 1,000 lbs/MWh generated to almost 2,200 lbs/MWh, or 0.47 kg/kWh for new (since 2000) facilities in the Southwest to 0.99 kg/kWh for all non-baseload facilities in the Midwest. The average among all regions in the U.S. for wind's theoretical equivalence according to Green-E is 0.66 kg/kWh.
Then there is the complication of how a highly variable and significantly unpredictable source such as wind actually affects the grid. Obviously, it can't replace any building of new capacity, because the grid still needs to be able to supply power when the wind isn't blowing. Its ability to reduce emissions from those other sources, particularly fossil fuel–fired sources, is also problematic for several reasons.
First, extra ramping and startups cause more fuel to be burned, with more emissions, cutting into whatever savings might have been achieved by using them less. Second, plants that can't ramp quickly may be switched to "spinning standby", in which they don't generate electricity but continue to burn fuel and create steam to be ready to switch back to generation when the wind dies. And third, all sources on the grid are not equally involved in the balancing of wind's variability. Hydro is the first choice to be ramped down, with no carbon savings, and natural gas plants are the second, with much less carbon savings than if coal were reduced.
In addition, the high cost per installed megawatt of wind reflects the energy required in its manufacture, transport, and construction. It may take several years before the theoretical carbon savings from a facility's output allows it to break even.
But now look again at what Worldwatch, with its very flawed formula, claims for wind: "Already, the 43 million tons of carbon dioxide displaced by the new wind plants installed last year equaled more than 5 percent of the year’s growth in global emissions. If the wind market quadruples over the next nine years -- a highly plausible scenario -- wind power could be reducing global emissions growth by 20 percent in 2015."
Global carbon emissions will continue to grow substantially, but not quite so much as they might without 300,000 MW (requiring 23,000 square miles) of new industrial wind energy facilities. That's pathetic even before considering the flaws in their calculation.
With the likes of Worldwatch watching out for it, the world indeed needs to watch out.
wind power, wind energy, environment, environmentalism
Calculations are based on U.S. data: average capacity factor for new wind power capacity (34%, from American Wind Energy Association); average capacity factor for coal-fired power plants (72%, from North American Electric Reliability Council - NAERC); average CO2 emissions from U.S. coal-fired power plants (0.95 kg/kWh, from U.S. Energy Information Administration); and average coal-fired power plant capacity (318 megawatts, from NAERC).There are two big flaws in Worldwatch's calculation.
First, a more objective source than the industry itself for the average capacity factor for wind energy facilities in the U.S. is the U.S. Energy Information Administration. According to their Annual Energy Outlook 2007, the capacity factor for wind was 21% in 2005. The AWEA's figures of 34% is promotional spiel and not based on actual data.
Second, there are other sources of electricity on the grid besides coal, including relatively cleaner-burning natural gas and carbon-free nuclear and hydro. At the least, the relative contributions of these sources must be considered. The renewable energy certifier Green-E, has recently proposed to value renewable energy output in terms of actual greenhouse gas emissions from the equivalent output by the rest of the grid.
By Green-E's calculations, the total greenhouse gas (not just CO2) emissions for different grid regions range from about 1,000 lbs/MWh generated to almost 2,200 lbs/MWh, or 0.47 kg/kWh for new (since 2000) facilities in the Southwest to 0.99 kg/kWh for all non-baseload facilities in the Midwest. The average among all regions in the U.S. for wind's theoretical equivalence according to Green-E is 0.66 kg/kWh.
Then there is the complication of how a highly variable and significantly unpredictable source such as wind actually affects the grid. Obviously, it can't replace any building of new capacity, because the grid still needs to be able to supply power when the wind isn't blowing. Its ability to reduce emissions from those other sources, particularly fossil fuel–fired sources, is also problematic for several reasons.
First, extra ramping and startups cause more fuel to be burned, with more emissions, cutting into whatever savings might have been achieved by using them less. Second, plants that can't ramp quickly may be switched to "spinning standby", in which they don't generate electricity but continue to burn fuel and create steam to be ready to switch back to generation when the wind dies. And third, all sources on the grid are not equally involved in the balancing of wind's variability. Hydro is the first choice to be ramped down, with no carbon savings, and natural gas plants are the second, with much less carbon savings than if coal were reduced.
In addition, the high cost per installed megawatt of wind reflects the energy required in its manufacture, transport, and construction. It may take several years before the theoretical carbon savings from a facility's output allows it to break even.
But now look again at what Worldwatch, with its very flawed formula, claims for wind: "Already, the 43 million tons of carbon dioxide displaced by the new wind plants installed last year equaled more than 5 percent of the year’s growth in global emissions. If the wind market quadruples over the next nine years -- a highly plausible scenario -- wind power could be reducing global emissions growth by 20 percent in 2015."
Global carbon emissions will continue to grow substantially, but not quite so much as they might without 300,000 MW (requiring 23,000 square miles) of new industrial wind energy facilities. That's pathetic even before considering the flaws in their calculation.
With the likes of Worldwatch watching out for it, the world indeed needs to watch out.
wind power, wind energy, environment, environmentalism
July 20, 2007
How forest friendly is Karnataka's Wind Energy?
Ameen writes from Tumkur City, India (click the title of this post):
Among the areas where wind turbines have been erected in Karnataka are the hills and highlands of eastern parts of Chitradurga district and in western parts of Tumkur district. We saw these windmills first hand this month and I am sad to say that these windmills have had a very immediate negative impact in the forests where they have been setup.
Due to their destructive nature, there already have been protests against the setting up of wind farms in the Western Ghats of Karnataka, namely Bababudan Giris (adjoining Bhadra Tiger Reserve) and Kudremukh National Park.
As a nature lover I have opposed hydro dams as being detrimental to forests. But, by witnessing the damage done by wind farms in Karnataka's forests, I doubt if wind energy in our country is really that green.
wind power, wind energy, wind farms, environment, environmentalism, animal rights
Among the areas where wind turbines have been erected in Karnataka are the hills and highlands of eastern parts of Chitradurga district and in western parts of Tumkur district. We saw these windmills first hand this month and I am sad to say that these windmills have had a very immediate negative impact in the forests where they have been setup.
- Each such wind mill has a concrete base of at least 30 feet by 30 feet.
- Each one of these has an individual road.
- Hundreds of trees have been removed to accomodate these giant "fans".
- The transportation of giant equipment requires huge trucks and causes enormous disturbance to the local flora and fauna.
Due to their destructive nature, there already have been protests against the setting up of wind farms in the Western Ghats of Karnataka, namely Bababudan Giris (adjoining Bhadra Tiger Reserve) and Kudremukh National Park.
As a nature lover I have opposed hydro dams as being detrimental to forests. But, by witnessing the damage done by wind farms in Karnataka's forests, I doubt if wind energy in our country is really that green.
wind power, wind energy, wind farms, environment, environmentalism, animal rights
July 17, 2007
Corporatism
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic state itself. That, in its essence, is fascism -- ownership of government by an individual, by a group, or any controlling private power."
--Franklin Delano Roosevelt,
"Message to Congress on Curbing Monopolies",
April 29, 1938
Q & A: Wind Energy
The president of National Wind Watch sent us these answers to questions recently posed by a student in Texas.
1. Most of the prevailing literature on wind energy has been relatively positive, can you comment as to why your organization has chosen to take an oppositional approach?
Answer: Most of the prevailing literature on wind energy is wishful thinking. If you read it objectively, you begin to notice that all claims of success (other than sales figures) are not backed up by actual data. This is combined with a tendency to dismiss adverse impacts as insignificant or unlikely. Faced with the evidence of adverse impacts, many advocates of wind energy simply deny them. After a while, one realizes that the arguments for large-scale wind energy are for the most part intellectually dishonest and unable to withstand scrutiny.
Since there is little (if any) evidence of good from wind energy, it is our duty to oppose the fruitless and extensive industrialization of rural and wild places by the wind industry.
2. As of late, Texas has taken the lead in wind energy production. Reports have highlighted the beneficial impact -- both economically and environmentally -- of this relatively recent wind energy "boom". The vast expanse of Texas lands seem ideal for wind farms. So, where is the problem?
Answer: Where is the proof of these claimed economic and environmental benefits?
Economically, there may be local effects of rents paid to landowners and pay-offs to communities, but that is all paid for by federal and state taxpayers and local ratepayers, who must still pay for keeping up the rest of the grid as much as before along with the added burden of backing up the wind turbines and overbuilding transmission lines to accomodate their occasional surges and shunt their unpredictable supply somewhere it might be needed or until it dissipates as heat.
The environmental benefit is presumably in reducing greenhouse gas emissions, which is assumed (though again without proof) to outweigh local negative impacts on wildlife and landscape. But the savings of greenhouse gas emissions that are claimed are theoretical only and ignore many aspects of the grid that complicate such a possible effect -- namely, an intermittent, variable, unpredictable source such as wind has to itself be balanced to maintain a steady voltage on the line. This adds inefficiencies to the use of fuel by other sources (from more frequent starting or ramping) or may require other sources to "stand by" -- burning fuel to keep the steam ready to generate electricity when the wind drops. In addition, hydropower is the most ideal source to balance wind, or wind's variations are simply allowed to modulate the line voltage within acceptable tolerances -- either case obviously does not affect the burning of fossil fuels.
Even in pro-wind theory, wind energy will never have a significant impact on greenhouse gas emissions. In isolated systems, even the AWEA claims only that wind will slightly slow the growth of emissions, not reduce them. Globally, wind would barely keep up with expanding electricity needs to maintain its less than 0.5% contribution, according to the International Energy Agency's modeling to 2030 ("Renewables in Global Energy Supply", January 2007). Considering that electricity is but one source of anthropogenic greenhouse gases, even the most hopeful theoretical benefit fades toward nothing. In reality, it's likely even less.
Until a significant global environmental benefit can be proven, we must act on the assumption that the local environmental effects can not be justified.
3. Recently, the Texas General Land Office received funding and permission to start testing and research for offshore wind energy production and technology. What are your views on offshore wind farming?
Answer: While siting them far offshore mitigates the impact on human neighbors, impacts on seascape and wildlife remain (besides interfering with birds, the turbines' low-frequency noise is likely to disturb fish and sea mammals), as do the very low possible benefits. Offshore construction is more difficult and expensive, and wear and tear on the turbines is much greater -- promising to make offshore wind even more of a boondoggle than onshore.
wind power, wind energy, wind farms, environment, environmentalism, human rights, animal rights
1. Most of the prevailing literature on wind energy has been relatively positive, can you comment as to why your organization has chosen to take an oppositional approach?
Answer: Most of the prevailing literature on wind energy is wishful thinking. If you read it objectively, you begin to notice that all claims of success (other than sales figures) are not backed up by actual data. This is combined with a tendency to dismiss adverse impacts as insignificant or unlikely. Faced with the evidence of adverse impacts, many advocates of wind energy simply deny them. After a while, one realizes that the arguments for large-scale wind energy are for the most part intellectually dishonest and unable to withstand scrutiny.
Since there is little (if any) evidence of good from wind energy, it is our duty to oppose the fruitless and extensive industrialization of rural and wild places by the wind industry.
2. As of late, Texas has taken the lead in wind energy production. Reports have highlighted the beneficial impact -- both economically and environmentally -- of this relatively recent wind energy "boom". The vast expanse of Texas lands seem ideal for wind farms. So, where is the problem?
Answer: Where is the proof of these claimed economic and environmental benefits?
Economically, there may be local effects of rents paid to landowners and pay-offs to communities, but that is all paid for by federal and state taxpayers and local ratepayers, who must still pay for keeping up the rest of the grid as much as before along with the added burden of backing up the wind turbines and overbuilding transmission lines to accomodate their occasional surges and shunt their unpredictable supply somewhere it might be needed or until it dissipates as heat.
The environmental benefit is presumably in reducing greenhouse gas emissions, which is assumed (though again without proof) to outweigh local negative impacts on wildlife and landscape. But the savings of greenhouse gas emissions that are claimed are theoretical only and ignore many aspects of the grid that complicate such a possible effect -- namely, an intermittent, variable, unpredictable source such as wind has to itself be balanced to maintain a steady voltage on the line. This adds inefficiencies to the use of fuel by other sources (from more frequent starting or ramping) or may require other sources to "stand by" -- burning fuel to keep the steam ready to generate electricity when the wind drops. In addition, hydropower is the most ideal source to balance wind, or wind's variations are simply allowed to modulate the line voltage within acceptable tolerances -- either case obviously does not affect the burning of fossil fuels.
Even in pro-wind theory, wind energy will never have a significant impact on greenhouse gas emissions. In isolated systems, even the AWEA claims only that wind will slightly slow the growth of emissions, not reduce them. Globally, wind would barely keep up with expanding electricity needs to maintain its less than 0.5% contribution, according to the International Energy Agency's modeling to 2030 ("Renewables in Global Energy Supply", January 2007). Considering that electricity is but one source of anthropogenic greenhouse gases, even the most hopeful theoretical benefit fades toward nothing. In reality, it's likely even less.
Until a significant global environmental benefit can be proven, we must act on the assumption that the local environmental effects can not be justified.
3. Recently, the Texas General Land Office received funding and permission to start testing and research for offshore wind energy production and technology. What are your views on offshore wind farming?
Answer: While siting them far offshore mitigates the impact on human neighbors, impacts on seascape and wildlife remain (besides interfering with birds, the turbines' low-frequency noise is likely to disturb fish and sea mammals), as do the very low possible benefits. Offshore construction is more difficult and expensive, and wear and tear on the turbines is much greater -- promising to make offshore wind even more of a boondoggle than onshore.
wind power, wind energy, wind farms, environment, environmentalism, human rights, animal rights
Wind turbine syndrome
To the editor, Hays (Kan.) Daily News:
Sam Zwengler apparently only sees (and hears) what he wants to hear ("Still looking for syndrome evidence," letter, July 14).
He cites a recent article in Nature, implying it as a peer-reviewed study of the impacts of living near wind energy facilities. In fact, it is only a news-section piece about the Spanish developer Acciona. Despite Zwengler's assertion, the article says nothing about residents living near the machines.
If he accepts that puff piece as scientific evidence that no ill effects exist, it is no wonder that he can only deny the increasingly frequent reports of serious health effects caused by wind turbine noise.
wind power, wind energy, wind farms, wind turbines, human rights, animal rights
Sam Zwengler apparently only sees (and hears) what he wants to hear ("Still looking for syndrome evidence," letter, July 14).
He cites a recent article in Nature, implying it as a peer-reviewed study of the impacts of living near wind energy facilities. In fact, it is only a news-section piece about the Spanish developer Acciona. Despite Zwengler's assertion, the article says nothing about residents living near the machines.
If he accepts that puff piece as scientific evidence that no ill effects exist, it is no wonder that he can only deny the increasingly frequent reports of serious health effects caused by wind turbine noise.
wind power, wind energy, wind farms, wind turbines, human rights, animal rights
July 14, 2007
Half a percent of conservation, or 60,000 square miles of industrial wind turbines?
"Renewables in Global Energy Supply", International Energy Agency (IEA), January 2007:
But how much will total electricity generation also increase by 2030? On page 13, they state that the share of all renewables will increase from 18% in 2004 to more than 25% of all electricity in 2030, and that the absolute amount will increase from 3,179 TWh in 2004 to 7,775 TWh in 2030. As 3,179 is 18% of 17,450, 7,775 is 25% of 31,100.
Wind's share of electricity generation, therefore, will rise from 0.47% in 2004 to only 4.6% in 2030.
Considering the destruction of landscape and communities, of wildlife and human health, by sprawling wind energy facilities, the responsible choice is obviously to increase conservation by that slight amount and say NO to big wind.
*According to the AWEA, 7,976 MW of wind capacity was added worldwide in 2004, for a total at the end of the year of 47,317 MW. The average for the year from the capacity at the end of 2003 (39,341 MW) to that at the end of 2004, therefore, is 42,329 MW. An output of 82 million MWh (average rate of 9,361 MW) represents 22% of that capacity. At a 22% capacity factor, 1,440 TWh would require an installed capacity of 750,000 MW. Requiring at least 50 acres per installed megawatt, that would be a total of 60,000 square miles. (Not to mention the millions of tons of materials, miles of roads and transmission lines, cement, etc.)
wind power, wind energy, wind farms, wind turbines, environment, environmentalism, human rights, animal rights
Further expansion of wind power will promote significant reductions in greenhouse gases. (pp. 25-26)In 2004, according to the IEA, wind generated 0.47% of the world's electricity, namely, 82 terawatt-hours* (TWh, or 1 million megawatt-hours) out of 17,450 TWh (a figure that is found in another IEA publication, "Key World Energy Statistics", 2006). They project that wind generation will grow about 18-fold by 2030, to 1,440 TWh (p. 12).
The Alternative Policy Scenario presented in this year's World Energy Outlook ... shows how the global energy market could evolve if countries around the world were to adopt a set of policies and measures that they are now considering and might be expected to implement over the projection period. (p. 12)
But how much will total electricity generation also increase by 2030? On page 13, they state that the share of all renewables will increase from 18% in 2004 to more than 25% of all electricity in 2030, and that the absolute amount will increase from 3,179 TWh in 2004 to 7,775 TWh in 2030. As 3,179 is 18% of 17,450, 7,775 is 25% of 31,100.
Wind's share of electricity generation, therefore, will rise from 0.47% in 2004 to only 4.6% in 2030.
Considering the destruction of landscape and communities, of wildlife and human health, by sprawling wind energy facilities, the responsible choice is obviously to increase conservation by that slight amount and say NO to big wind.
*According to the AWEA, 7,976 MW of wind capacity was added worldwide in 2004, for a total at the end of the year of 47,317 MW. The average for the year from the capacity at the end of 2003 (39,341 MW) to that at the end of 2004, therefore, is 42,329 MW. An output of 82 million MWh (average rate of 9,361 MW) represents 22% of that capacity. At a 22% capacity factor, 1,440 TWh would require an installed capacity of 750,000 MW. Requiring at least 50 acres per installed megawatt, that would be a total of 60,000 square miles. (Not to mention the millions of tons of materials, miles of roads and transmission lines, cement, etc.)
wind power, wind energy, wind farms, wind turbines, environment, environmentalism, human rights, animal rights
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