Why Not Wind
To whom it may concern:
This is a brief representation of the reasons industrial-scale wind is a destructive boondoggle that only fools – or worse – would approve.
Unlike “conventional” power sources, wind does not follow demand. As the Bonneville Power Authority in the Pacific Northwest of the USA has shown, the relationship between load and wind generation is essentially random (www.wind-watch.org/pix/493). That means that wind can never replace dispatchable sources that are needed to meet actual demand.
The contribution of wind generation is therefore an illusion, because the grid has to supply steady power in response to demand, and as the wind rises and falls, the grid maintains supply by relying on its already built-in excess capacity.
That is also why meaningful reductions in carbon emissions are not seen: because fuel continues to be burned in “spinning reserve” plants which are kept active to kick in when needed for meeting surges in demand or, now, drops in the wind. Denmark’s famously high wind penetration is possible only because it is connected to the large Nordic and the German grids – so that Denmark’s wind power actually constitutes a very small fraction of that total system capacity. To make further wind capacity possible (despite a public backlash that has essentially stopped onshore wind development since 2003), Denmark is now building a connection to the Dutch grid.
Another reason that meaningful reductions in carbon emissions are not seen is that the first source to be modulated to balance wind is usually hydro. This is seen quite clearly in Spain, another country with high wind penetration: The changes in electricity from hydro are an almost exact inverse of those from wind (https://demanda.ree.es/generacion_acumulada.html). This is also seen in the USA’s Pacific Northwest (http://transmission.bpa.gov/business/operations/Wind/baltwg.aspx).
Finally, on systems with sufficient natural gas–powered generators, which can ramp on and off quickly enough to balance wind’s highly variable infeed, wind forces those generators to operate far less efficiently than they would otherwise. It is like city versus highway driving. According to several analyses (e.g., www.wind-watch.org/doc/?p=1568), the carbon emissions from gas + wind are not significantly different from gas alone and in some cases may be more.
And again, whatever the effect, wind is always an add-on. The grid must be able to operate reliably without it, because very often, and often for very long stretches of time, wind is indeed in the doldrums: It is not there.
And beware the illusion of “average” output. The fact is that any wind turbine or group of turbines generates at or above its average rate (which is typically 20%–30% of the nameplate capacity, depending on the site) only about 40% of the time. Because of the physics of extracting energy from wind, the rest of the time production approaches zero. About one-third of the time, wind production is absolutely zero.
As an add-on, therefore, its costs are completely unnecessary and wasteful. And even if, by some miracle, it were a reliable, dispatchable, reasonably continuous source, its costs would still be enormous – not only economically, but also environmentally. Wind is a very diffuse resource and therefore requires a massive mechanical system to catch any useful amount. That means ever larger blades on ever taller towers in ever larger arrays. And the only places where that is feasible are the very places we need to preserve as useful agricultural land, scenic landscapes that are so important to our soul (and to tourism), and wild land where the natural world can thrive.
Besides the obvious damage to the land of heavy-duty roads for construction and continued maintenance, huge concrete platforms, new powerlines, and substations (while making no meaningful contribution to the actual operation of the grid) and the visual intrusion of 150-metre (500-ft) structures with strobe lights and rotating blades, there are serious adverse impacts from the giant airplane-like blades cutting through 6,000–8,000 square metres (1.5–2 acres) of vertical airspace both day and night: pulsating noise (including infrasound which is felt more than heard) that carries great distances and disturbs neighbors (especially at night, when there is a greater expectation of – and need for – quiet), even threatening their physical health, pressure vortices that kill bats by destroying their lungs, blade tip speeds of 300 km/h that also kill bats as well as birds, particularly raptors, many of which are already endangered, and vibration that carries through the tower into the ground with effects on soil integrity and flora and fauna that have yet to be studied.
In short, the benefits of industrial-scale wind are minuscule, while its adverse impacts and costs are great. Its only effect is to provide greenwashing (and tax avoidance) for business-as-usual energy producers and lip-service politicians, while opening up to vast industrial development land that has been otherwise fiercely protected – most disturbingly by many of the same groups now clamoring for wind.
Industrial-scale wind is all the more outrageous for the massive flow of public money into the private bank accounts of developers. It is not surprising to learn that Enron established the package of subsidies and regulatory “innovations” that made the modern wind industry possible. Or that in Italy, the Mafia was an early backer of developers. It is indeed a criminal enterprise: crony capitalism, anti-environment rapaciousness, and hucksterism at its most duplicitous.
After decades of recorded experience, there is no longer any excuse to fall for it.
President, National Wind Watch, Inc. (www.wind-watch.org)
Mr Rosenbloom lives in Vermont, USA, where he works as a science editor, writer, and typographer. He has studied and written about wind energy since 2003. He was invited to join the board, and then elected President (a wholly volunteer position), of National Wind Watch in 2006, a year after it was founded by citizens from 10 states who met to share their concerns about the risks and impacts of wind energy development. National Wind Watch is a 501(c)(3) educational charity registered in Massachusetts.
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