It is broadly accepted that wind turbines do not emit CO2 at the point of generation. However, in common with all types of power station, it is emitted during their construction and, through damage directly inflicted on the construction site, over a much longer period. The total debt will vary from site to site but will comprise some or all of the following;

• Emissions arising from fabrication (steel smelting, forging of turbine columns, the manufacture of blades and the electrical and mechanical components);
• Emissions arising from construction (transportation of components, quarrying, building foundations, access tracks and hard standings, commissioning);
• The indirect loss of CO2 uptake (fixation) by plants originally on the surface of the site but obliterated by construction activity including the destruction of active bog plants on wet sites and deforestation;
• Emissions due to the indirect, long-term liberation of CO2 from carbon stored in peat due to drying and oxidation processes caused by construction of the site.

It is important to recognise that peat is a major store of carbon accumulated from dead plant remains over many millennia. It is held in perpetuity because the bog’s wetness and acid conditions prevent the access of oxygen and inhibit the growth of bacteria which would otherwise rot the vegetation. Draining peat for construction reverses both these long-term processes: the soil is exposed to the air, the carbon is converted to CO2 and released slowly to the atmosphere.

Several papers from the wind industry in Denmark and the UK have addressed the first two points with estimates of payback time ranging from about six to 30 months.

However, the industry rarely, if ever, considers the last two. This is a fundamental omission as their contribution to the overall CO2 debt, in particular the last, can be far greater than all the others put together. This paper outlines a procedure for quantifying it.

The guide has been prepared to enable anyone with access to the Environmental Statement (ES) that forms part of a Planning Application (PA) for a wind farm to estimate its CO2 debt. (If some of the requisite information proves to be unavailable, this ought to provide grounds for postponing consideration of the application and the commissioning of further assessment.)

The results of the calculations described should be submitted to planning authorities or Public Inquiries as part of the arguments used in assessing the merits and demerits of an application.

WV's Congressman Mollohan submitted a letter on July 26, 2006 to the WV Public Service Commission (PSC) concerning the Beech Ridge wind energy project proposed for Greenbrier County, WV by Chicago-based Invenergy, Inc. This wind energy developer successfully pushed through a windplant in Wisconsin nearby the Horicon Marsh - a globally-significant wildlife area and National Wildlife Refuge - despite the widespread outcry by national and local wildlife groups who opposed such close siting.

Mollohan's letter points out that Invenergy disregarded recommendations by the US Fish and Wildlife Service for multi-year pre-construction studies regarding the project's potential impacts on migratory birds and bats. He also observed that although WV's one operating wind project in Tucker County has been the site of record-setting bat mortality due to collision with turbine blades, the project operator (FPL Energy) has cut off access to the site for scientific study or investigation, even by the National Research Council/National Academies committee charged by the U.S. Congress to study the environmental impacts of wind projects in the Mid-Atlantic Highlands (see footnote #2 in his letter).

Vermont regional commissions are responsible for updating their respective 'plans' every five years. The Windham Regional Commission (WRC), comprised of representatives from the 27 towns in Windham County, submitted a draft of its updated plan for public comment in late June 2006.

Given the prevailing public concerns regarding energy, the energy section of WRC's draft plan was of particular interest. Specifically, the Glebe Mountain Group, an incorporated non-profit organization that has been actively engaged in protecting Glebe Mountain from industrialization, felt is was imperative that industrial wind generation projects not be encouraged or accorded any presumption that they serve the public good.

The Glebe Mountain Group's comments on the plan are attached as is the original 'draft' WRC plan. Some of the specific comments related to wind energy are extracted below as is the conclusion. These comments were fully endorsed by The Friends of Glebe Mountain, an unincorporated 100% volunteer group comprised of residents of and non-resident property owners in the towns of Londonderry and Windham.

Sally Collins' statement before the U.S. Senate Committee on Energy and Natural Resources

..neither renewable energy nor greater energy efficiency can provide the complete solution to the shortfall we face. This will depend on securing energy supplies from abroad, in new nuclear power stations to replace those becoming obsolete and replacing older coal-fired stations with cleaner, more efficient technology.

Editor's Note: Recently updated, Elizabeth Mann's extensive research on the deceptive measures employed by proponents of industrial wind energy in the UK at both the national and local level should prove quite useful to opponents of wind energy in the UK.

This report examines the factors underlying the recent increases in electricity prices and the potential impact of these factors on the industry's financial condition. It focuses primarily on cost changes experienced over the past five years and the projected trends in these costs over the next ten years.

This technical report was prepared for the Vermont Department of Public Service (VDPS) by GDS Associates, Inc and the American Council for an Energy Efficient Economy.

Editor's Note: The complete report and accompanying power point presentation are available below.

This is a helpful reference document for those interested in understanding the language of the electric utility industry and reliability authorities.