Archive for the ‘Energy & Environment’ Category

The Wind Once More

Monday, November 22nd, 2010

A few notes to start with, the last of which will then segue, as the TV folks say, into the main body of the post.

First, to give credit where it’s due, the photo of work at the Sheffield wind power project site in last Wednesday’s post was taken by Steve Butcher from a plane flown by Peter Boynton. Both live in the Mad River Valley and oppose plans for a wind power project along Northfield Ridge. The photo was not intended to, could not have, and did not reveal any improper activity going on at the site.

Next, the sentence in Friday’s post that read, “electricity consumption nationwide is equivalent to about 450 GW annually,” should have replaced “annually” with “on average,” or “equivalent to the output of 450 GW running continuously.”

For the record, the guy in the photo on the right side of Friday’s post was John Donne

Finally, some clarifications on the earlier posts, starting wtih clearing up some confusion toward the bottom of Friday’s post, Latish in the evening, after dinner out, the News Guy got some new information thanks to the cooperative folks at ISO New England.

Perhaps because it was late, perhaps because the dinner included a drink (OK, two drinks, if you insist) the information was at first misinterpreted as a dissent of sorts from the findings of a U.S. Government agency that Vermont’s capacity to create electricity from wind was quite small.

Those who read that post after about 9 AM when the misinterpretation was corrected can skip this paragraph. For earlier readers, there is no discrepancy. Both ISO New England (the area’s Regional Transmission Organization, based in Holyoke, Massachusetts) and the U.S. Energy Department’s National Renewal Energy Laboratory (NREL) conclude that Vermont’s wind power potential is less than a gigawatt.

This can get confusing, and blame for some of the confusion rests right here, because electricity capacity is sometimes expressed in megawatts or gigawatts and sometimes in megawatt hours or gigawatt hours. (See above clarification about the difference between “annually” and “on average.”).

The comment on last Friday’s post (scroll down) by Hilton Dier is factually accurate. Friday’s post concluded, based on U.S.Energy Department assessments, that Vermont’s wind power potential was tiny in relation to the nation’s energy consumption, too tiny to make a dent in greenhouse gas (GHG) emissions.

That’s true.

Dier points out that if Vermont fully exploited its wind potential (a most unlikely prospect), it could effectively provide all its power from wind.

That’s probably true, too.

How can they both be true? Because Vermont, according to the Energy Department, uses but two tenths of one percent of all the electricity consumed in the country.

That’s not enough to save much, if any, fossil fuel burning, especially without some disincentive for burning those fossil fuels (see below).

Now, this alone does not prove that wind power should not be developed. There are all kinds of reasons for supporting more wind power in Vermont. Some people approve any addition to the power supply by any means. They may be right.

(Or not. A case can be made that New England, where the population is stable and per-person electricity consumption is declining,  needs no more power generating plants at all, at least for a while. But that’s a separate discussion.)

But the point of these last few posts, which should have been obvious to the functionally literate, is that if your case for supporting wind power in Vermont was that it might help reduce fossil fuel use and thereby ease global warming, you ain’t got much of a case.

The wind power that could potentially produced on land (the offshore potential is greater) by the entire east coast (which effectively includes Vermont, its lack of actual coastline notwithstanding) is not likely prevent the burning of a single ton of coal, barrel of oil, or cubic foot of natural gas.

At least not if NREL’s assessment is correct.

Especially considering that without that carbon tax or cap and trade regimen, adding new generating power to the system will probably mean only that Americans will use more power, not that they will substitute the clean for the dirty. The coal will still be in the ground waiting to be mined, sold, and burned. Absent some disincentive to mine, sell, and burn it, that’s what is likely to happen.

The key question here is not whether putting wind towers on Vermont ridge lines would do any good at all. Obviously, it would produce some electricity without polluting the air.

The key question is whether creating this tiny (in the national context) amount of power is worth the damage to the ridge lines.

Especially since, as Lyndon State science professor Ben Luce said, the near future could see a much more meaningful expansion of renewable energy from wind towers off-shore and on the Great Plains and from solar energy.

If that happens, Vermont will have degraded some of its pristine mountain streams, intruded on valuable wildlife habitat, and scarred its high elevation ridges for…well, effectively for nothing.

Granted, some people – seemingly intelligent, knowledgeable, well-meaning people at that – remain bullish about New England wind, raising the possibility that there could be a flaw in NREL’s analysis. This is not likely – the federal scientists have access to the best data all over the country – but let’s play with the idea briefly.

Seth Kaplan, a vice president for policy and climate advocacy at the Conservation Law Foundation, is a real optimist about New England wind power’s potential to reduce greenhouse gas emissions. His line of reasoning, which appears informed and responsible, is too complicated and not sufficiently central to today’s discussion to require a detailed account here. But he’s confident that eventually wind can produce enough power to create a tipping point, reducing coal production by a greater percentage of power use than the wind produces.

“If 2.5 percent (of all power produced) came from (wind), emissions would drop by 2.5 percent,” he said. But if wind could produce 14 percent of the power, “you’d get a 17 percent CO2 reduction. At 24 percent, a 30 percent reduction.”

Needless to say, those estimates are debatable. But what is important for now is Kaplan’s acknowledgement that they only rise to the level of debatable if Vermont and the rest of the northeast can produce a great deal of wind power, apparently more than the National Renewable Energy Laboratory finds feasible. Could NREL be wrong?

Yes. Before assessing the wind power potential of each state, NREL excludes all the land where,it assumes industrial wind towers could not be built—city centers, lakes, parks. In Vermont the study excludes more than three quarters of the state’s 2,569.6 square kilometers, including, it seems, the Green Mountain National Forest.

But wind towers have not been banned on the GMNF, whose officials are considering whether to allow them in the Searsburg area.  Ponder this possibility, then: the same peaks and ridge lines that George Aiken saved from a federal highway proposal in the 1930s could be covered by 450-foot-high wind towers in the coming decade.

Not, probably, what most Vermonters want. Not, probably, a plus for the state’s tourism economy. But if wind towers are acceptable to the Forest Service, and if people are serious about producing enough wind power to make a difference in global warming, not out of the question.

Ben Luce, who has studied the wind maps, doubts that very much of the GMNF is prime wind power terrain.  In much of the area, he said, building the necessary roads would be prohibitively expensive. Besides, he said, even covering much of the National Forest with wind towers would still produce “a tiny fraction” of the region’s or the nation’s electricity, not enough to reduce greenhouse gases.

Especially considering that Vermont now gets much of its power from Hydro-Quebec and (for a while) Vermont Yankee, neither of which emit GHGs. (Or not much. A more scientifically literate reporter than this one informs that HQ’s flooding and reservoirs emit some carbon dioxide.

The mainstream environmental groups who support more wind power now would probably draw the line at covering the National Forest with wind towers. But here’s the contradiction that confronts them: unless Vermont wind power is developed everywhere it can be produced, it’s not likely to have any impact on greenhouse gas production.

With some justification, the enviros have complained that the earlier posts on this subject did not mention their commitment to “careful siting, scale, and design of wind facilities,” as they make clear in the joint statement they released last week. Jamie Fiedel of the Vermont Natural Resources Council pointed out that his organization had “spent years” on “limiting the impact on bear habitat” from the Searsburg wind project.

No doubt they did and no doubt they are sincere in their desire to limit the harmful impacts of wind projects. But the more they limit, the less productive the wind developments, so their two goals – create more power; protect the ridge lines – seem to be in conflict.

Besides, no matter how much damage is limited, it is indisputable that from an environmental perspective, the best thing to do with these ridges is…nothing. Any development will result in some degree of environmental and ecological degradation. Here we have environmentalists favoring environmental degradation largely because they think it will assuage the greater environmental crisis of global warming.

They seem to be wrong.

And in a bit of political irony, the environmentalists, politically left of center, argue for a policy which grants extraordinary discretion over land use policy to developers. Without comprehensive energy or land use planning, it is developers, whose mission is to make money, not produce power or protect nature, who will decide where the wind towers go.

With, to be sure, approval from the Public Service Board and the Agency of Natural Resources. So far, this has not been a problem.

To be fair, climate change is not the green groups only goal here. In an email, Paul Burns of the Vermont Public Interest Research Group (VPIRG) said he and his colleagues were also motivated by “the retirement of Vermont Yankee,” and the “belief…that we Vermonters bear some responsibility for generating the power we use every day.”

It’s understandable that environmentalists, who have been fighting to shut down Vermont Yankee, feel responsible for making sure something is available to replace the power the nuclear plant now provides. But it seems there is plenty of power in the area. CLF’s pro-wind Seth Kaplan noted that “New England is capacity rich,” right now.

The part about Vermont’s responsibility to produce its own power is understandable, but also subjective and a bit abstract. It also seems to be a thin reed on which to base the environmentalist pro-wind policies.

So here, admittedly as conjecture more than evidence-backed analysis, are two alternative explanations.

First, the environmentalists and some of  the wind developers are associates, even friends. Some of those developers (see last Monday’s post) even sit on the green groups boards and contribute generously.

No, the greenies are not being bought off. But they and the wind developers are in the same tribe. They frequent the same Montpelier restaurants and coffee shops. They share the same liberal politics. To the environmental leaders, the wind developers are “one of us.” They must mean well (and no doubt do; but as George Bernard Shaw noted, “all men mean well”).

The second explanation has to do with that liberalism they share. These environmentalists are liberals, and Vermont liberals at that. Liberals, perhaps especially in Vermont, believe in being personally responsible. They recycle. They try to limit their carbon imprint.

Good things to do. But in the case of recycling, it really only does any good if enough people do it. In Vermont, they do, thanks to the efforts of environmentalists.

But the environmentalists would do it anyway, whether or not it did much good. It would make them feel better.

Maybe that’s  why they want to cover the ridges with wind towers.

And find/What Wind…

Friday, November 19th, 2010

….Serves to advance an honest mind,” is how John Donne finished that line back in 1633.

Donne was writing what he called a song, and it was fun. This exercise in how an honest mind should judge the efficacy of wind- generated electricity would be less enjoyable even if the guy putting it together had a tenth of Donne’s talent, which, for the record, he does not. What follows is a slog through fact and data (while trying to avoid conjecture and bias), a whole lot less entertaining than wit and rhyme.

There are several arguments on behalf of developing wind power in Vermont. It would create some jobs. In the spirit of Vermont self-reliance, the energy would be home-grown, even though no one knows where the juice powering his or her appliances really originates.

But the climate change case is the sine qua non of the pro-wind forces, the reason wind power development seems to have (those the polls should be treated with some skepticism) the support of most Vermonters. So there is one central question: will erecting hundreds of wind towers on Vermont’s high ridges mean Vermonters and other Americans will burn less coal, oil, and natural gas, and therefore stop making the world hotter, or at least stop making it hotter as quickly?

Because this is no more a suspense novel than a poem, the answer will come right now: NO.

Or at least the overwhelming preponderance of the evidence says that it will not.

Or at the very best (or worst, depending on one’s sentiments) it will do so infinitesimally.

Obviously, creating any power without producing climate-warming greenhouse gases (GHG) contains the potential for reducing the creation of power from sources that do produce those gases.

For instance, according to First Wind, the company now clearing land for a wind power project in Sheffield, that project will provide 115,000 megawatt hours of power per year. Considering that a typical ton of coal produces 2,000 MWh of power (or so says the National Mining Association) might not those figures mean that exploiting Sheffield’s wind could avoid burning 57,500 tons of carbon-filled coal?

If it did, big deal. More than a billion tons of coal was burned in the U.S. in 2009 (the last year for which figures are available, and lower than the previous year thanks to the recession). This is rounding error territory.

Besides, the Sheffield project would not have any such impact. The 115,000 MWh figure comes from the developer, and is meaningless out of context, as are claims, so often parroted by local news organizations, that a proposed project will provide power to X thousand Vermont homes.

Better to stick to the official, carefully-researched, and presumably un-biased projections of the U.S. Government (which supports more wind power, so any bias would be pro-wind).

According to the National Renewal Energy Laboratory (NREL, part of the U.S. Department of Energy) if all Vermont ridge lines with “suitable wind resource for wind development” (average annual wind speeds of 6.5 meters per second or greater) were in fact developed, they would produce  2,948.7 megawatts, or, to keep it simple, the equivalent of 2.9 gigawatts (GW) of wind capacity (a gigawatt is a billion watts). If all the suitable sites throughout the Northeast were exploited, the total would be 52 GW. (This is for inland areas only; offshore wind power potential is greater).

That sounds like a lot of power, but these are estimates of “gross capacity…not adjusted for losses.” That’s official jargon meaning the estimate assumes the wind would be blowing at about 6.5 m/s all the time. It doesn’t. Sometimes it doesn’t blow at all.

The hard-line anti-wind activists are wrong when they say this means wind power would be worthless and unreliable. No method of generating electricity works at full capacity all day, every day, all year long. Coal, natural gas, and nuclear plants have to shut down for maintenance, repair, and inspection (few of them as often as Vermont Yankee).

It does mean that the actual – as opposed to theoretical – production capacity of wind projects has to be adjusted downward,  70 percent downward according to NREL.

So the Northeast really contributes some 15.6 GW and Vermont less than nine tenths of one GW. And remember: that’s assuming maximum production on all sites, which is unlikely ever to happen.

Electricity consumption nationwide is equivalent to about 450 GW annually.

So Northeast wind would add up to roughly 3.7 percent of the nation’s energy use. Could producing that wind power reduce fossil fuel emissions by 3.7 percent?

No. First of all, not all power is produced by burning fossil fuels. Nuclear, biomass, and other non-polluting (or at least non-greenhouse gas-emitting) sources provide roughly a third of all electrical power. In the Northeast, where Vermont wind power would be used, that power would be more likely to replace (if it replaced anything) electricity made from natural gas – a carbon emission, but with roughly half the carbon of coal, further diminishing whatever savings in GHG might ensue. In addition, most greenhouse gases are not produced by electricity generation. Estimates range from 34 percent (the U.S. Department of Agriculture) to 41 percent (the Energy Department). Either way, the potential GHG savings from infusing a few GWs of eastern wind power into the system appear to be tiny.

Or maybe non-existent. Here we are in the realm of conjecture because no data exist. But it is undoubtedly possible – and perhaps likely – that the result of adding a few more GWs into the system would be that…a few more GWs would be used. Instead of replacing power now generated by fossil fuels, they would supplement them. People – or at least Americans – seem to have an effectively infinite capacity for using electricity, especially these days when so many appliances keep eating the stuff up even when they are turned off. Yes, energy efficiency efforts have been somewhat successful. That doesn’t mean people won’t use more power if the system creates more power.

This might not be the case if the whole country produced a great deal of wind power, say a couple of hundred GWs instead of Vermont’s paltry less-than-one. At some point, the overload could lead to real replacement of fossil fuels by renewables.

Now we come to an important part of the political debate in Vermont. Because (though some of the pro-wind zealots seem to deny this) almost nobody is opposed to developing more wind power where: (a) there is lots of it; and (b) its ecological impact would be acceptable. The “almost” is needed in that previous sentence because there are a few folks –die-hard supporters of nuclear power and/or global warming deniers – who dismiss wind power outright.

But that does not describe most opponents of putting wind towers on Vermont’s ridges. It certainly does not describe Ben Luce, the Lyndon State College science professor who called attention to the NREL analysis when he spoke at the press conference Wednesday held by Vermont wind power opponents.

Describing himself as “a long-time advocate of utility-scale wind development,” Luce said wind power can “make a meaningful contribution to US clean energy generation,” but that Vermont ridges “are not actually major league renewable energy resources,” and that the wind projects will cause “enormous and adverse impacts to Vermont’s fragile wilderness.”

(As noted in an earlier post on this subject, these areas, remote and wild though they may be, are not really “wilderness.”)

Wind power production, Luce said, should take place where there is a lot of wind, and where the ecological impact would be less severe and perhaps more acceptable.

It’s not much of a mystery to see where that would be. Take a look at that map above. In the Great Plains, from Minnesota to Texas, the wind speeds are often more than eight or even nine meters per second. Most of the land is flat. Flat does not mean unimportant. It often does mean that development is less threatening to the land’s ecological integrity.

(Here Luce and his allies can be accused of NIMBYism, supporting change elsewhere but “not in my back yard.” But that’s a separate discussion. Besides, there’s nothing wrong with NIMBYism; it’s the American Way).

But wait a minute. Is there no evidence in official or quasi-official sources pointing the other way, suggesting that Vermont wind power could have a real impact on greenhouse gas emissions?

In official sources, no.

The Energy Department’s Energy Information Agency does predict that “generation from wind power increases from 1.3 percent…to 4.1 percent in 2035.” More than a tripling, but still a tiny percentage of the total. And that’s nationwide. Almost all of that increase is likely to come from…believe it or not, where almost all the “suitable wind resources for wind development” are located – out on the great Plains. Vermont simply does not have enough wind resources to make a difference.

ISO New England, the area’s Regional Transmission Organization, has projected that in New England alone, 12,000 megawatts of wind power could be generated by 2030, 7,500 MW inland, another 4,500 off-shore. That’s comparable to the NREL assessment, and while ISO New England said that development would represent “a major shift” in the region’s resources, it still isn’t much power, hardly enough to reduce GHG emissions.

But Seth Kaplan, the Boston-based wind power expert for the Conservation Law Foundation, said the ISO New England projections reveal the possibility of even more wind power in the Northeast, perhaps enough to allow substantial reductions in greenhouse gas emissions.

Come back Monday for an examination of whether he and ISO have a good case, and also of whether, if they do, most Vermonters would be happy about it.

Wind At Their Backs? II

Wednesday, November 17th, 2010

Note: The demons of the cyber world did their worst Monday morning, countermanding the  order to publish that day’s post shortly after midnight. Off in the big city (Burlington) for the day, the News Guy did  not find out until mid-afternoon, could not nullify the demonic achievement until almost 4 PM.

That post and this one concern the same subject, and while they can be read in either order, the better option would be to scroll down and read Monday’s first.

The Sheffield wind project

So you want to build a whole bunch of wind towers on a Vermont mountaintop to generate electricity?

Not so fast. First you have to comply with a whole bunch of state and federal laws designed to make sure that – among other things – the  roads you build up to and along those ridges, plus the huge platforms on which your towers will sit, don’t pollute the water. All that excavation can cause erosion. Cutting trees along stream banks means less shade, hence warmer water. The law says the water can’t be made more than one degree warmer or otherwise “degraded.”

So what to do?

One obvious technique – the one preferred by most environmentalists – is first to test the streams. Take their temperature. Check for pollutants. Measure acidity and turbidity (suspended sediments in the water). That provides a baseline, a foundation for judging , as the project proceeds, whether the excavation and construction is doing unacceptable damage to the mountain waterways.

“How else to determine degradation?” asked Stephanie Kaplan, the Calais lawyer representing opponents of the wind project now under construction in Sheffield. “The logical thing is to test before and then during and after” to measure the impact, she said.

That’s not the way it’s being done. Instead, First Wind, the developer of the Sheffield project, has committed to perform the work using “Best Management Practices (BMPs). Under this theory, if BMPs are followed, then, ipso facto, the streams are not being polluted.

Huh?

Well, it may sound absurd, but it seems to be legal. The Agency of Natural Resources endorsed the policy. So did Environmental Court Judge Meredith Wright. Though her decision is under appeal, the bulldozers, dynamiters, and chain saws are working on the Sheffield project.

Kaplan is convinced she has a chance to get the State Supreme Court to overturn the Environmental Court decision. She acknowledges that in some cases the statute (10 V.S.A. § 1264) allows for using BMPs. But it also says a project “can not raise the temperature more than one degree Fahrenheit, can not degrade the water, can not change the ph. Water quality  standards have standards. If they are to mean anything there has to be way to determine whether these things are occurring.”

Kaplan and her allies in the outnumbered and (so far) outgunned anti-wind forces in Vermont are both mystified and infuriated by the judge’s decision, by the ANR’s efforts on behalf of wind power, and perhaps most of all by the acquiescence of the state’s mainstream environmental organizations. In the past, those organizations often opposed using BMPs as a substitute for actual stream monitoring. Their silence in this case only reinforced the suspicions of the anti-wind forces that the fix was in against them, that Vermont’s establishment – government officials, politicians, the media, and even most environmentalists were stubbornly locked into their support for more wind power, regardless of the consequences.

“They all love wind, no matter what,” Kaplan said.

(Though apparently not all with the same ardor. The Vermont Public Interest Research Group (VPIRG) and League of Conservation Voters are the most gung ho for wind development. The Vermont Natural Resources Council (VNRC) is more ambivalent.  Its water resources expert, Jon Groveman, also disagrees with Judge Wright’s decision on the BMPs. The Conservation Law Foundation is generally pro-wind but has not taken a position on most of the specific proposed projects in the state)

“I’m a little baffled, myself,” said Annette Smith, the head of Vermonters for a Clean Environment (VCE),  the only green group opposing wind power in Vermont (the other, Energize Vermont, is really a VCE spinoff). Smith said she had spent a lot of time discussing the wind issue with officials of the other environmental groups, and suspects that one reason they are all so pro-wind is that a few of them have some financial connections with wind power companies.

(The subject of Monday’s post [scroll down] which erroneously said that the Conservation Law Foundation did not disclose the names of its contributors. It does list the over-$500 donors on its web site, as can be seen here.

Wind power has obviously created a schism in the green community, one which reached its apex (so far) last week when the mainstreamers rejected an advertisement Kaplan wanted to buy in the program for an environmental conference Saturday on behalf of “citizens working to protect their communities, mountains, wildlife and streams from the environmental destruction caused by industrial wind turbines.”

The language and tone did not “match our community position,” said one environmentalist, in urging that the ad not be published.

Touchy, touchy. But there is ample ill will and possible misunderstanding on both sides of this green civil war. These wind projects are not the first ones in which officials have used Best Management Practices to determine compliance. In fact, similar standards are used in enforcing environmental (and other) regulations all around the country.

Furthermore, these ridges are not wilderness. They have been logged, often more than once. Vermont has never made a decision to protect its privately owned ridge lines from development, however remote and beautiful they may be. Which is another way of saying that the state has made a decision not to protect them, but to allow development on them.

“We haven’t said no to high elevation development in Vermont,” said Chris Kilian of CLF. “In fact, we said yes to ski areas. We have restaurants on the top of our mountains. Vermont made a major strategic decision to open up summits to development.”

Kilian said he is not entirely happy about all this situation, and thinks perhaps high elevation projects should “be analyzed in a different way.”

Another thing Vermont has not done, said Elizabeth Courtney of the VNRC, is implement a statewide energy plan. With one, officials might be able to determine how much additional power generation the state needed and how it should be supplied. Without one, she said, “the developer gets to choose where the project goes, not the people.”

Assuming, of course, that the developer can get approval from the Public Service Board and the Agency of Natural Resources. But that doesn’t seem to be difficult. Even though it isn’t clear that more generating capacity is needed, even if the wind projects rip up the mountains, official Vermont, backed by most of the state’s environmental lobbyists, appears determined to approve wind power.

Because even though they might be a bit hyper-sensitive, Stephanie Kaplan, Annette Smith and their small band of allies are right: the fix is in for wind power in Vermont. Not because anyone (except the wind developers and some landowners) are making money or have been corrupted by donations. But because being pro-wind has simply become the established wisdom. It’s rather like being pro-choice on abortion in some circles. Everybody one knows, all the “right people” are pro-wind.

And it’s easy to see why. The anti-wind forces have been allied with the coal and oil industries or with nuclear power, specifically the Vermont Yankee nuclear plant which Vermont environmentalists have been battling for years.

Or – worse – the anti-wind camp is part of the climate change denial school, the minority (but a very well-financed minority) which defies the scientific consensus that the world is warming because people are burning too much oil and coal. At least after the turbines have been built and installed, wind power produces almost no greenhouse gasses.

Anyone wanting to understand why Vermont environmentalists are so devoted to wind power need only read from the opening paragraph of the recent joint statement they released, where they expressed their “deep concern that society has not moved fast or aggressively enough to address the most urgent environmental crisis in human history: climate change.”

On that, they are as correct as they are sincere. And they are sincere in their conviction that exploiting Vermont’s wind power potential can ease this crisis, can produce enough power to allow the state, the region, the country to burn less coal and oil, thereby reducing greenhouse gas emissions. production and easing the impact of global warming.

If they’re right about that, they could have a good case that it’s worth blowing up a few mountains.

But suppose they’re wrong about that. Come back Friday.