Large wind turbines require a large amount of energy to operate. Other electricity plants generally use their own electricity, and the difference between the amount they generate and the amount delivered to the grid is readily determined. Wind plants, however, use electricity from the grid, which does not appear to be accounted for in their output figures.

Eric Rosenbloom writes:

"Although Greenpeace's answer to wind-farm.org, Yes2Wind, includes a link to the Intergovernmental Panel on Climate Change (IPCC), I was not surprised to find almost nothing from IPCC about wind power. In one 1996 Technical Paper, "Technologies, Policies and Measures for Mitigating Climate Change," wind is discussed among other renewable sources. The study is interesting.

It examines seven areas of human activity that affect the emission of greenhouse gases, especially CO2. The main topics are buildings, transport, industry, and the energy supply itself to these three areas. Also of concern is agriculture, which accounts for only 5% of human CO2 release but 50% of CH4 and 70% of N2O; forests, the clearing and degradation of which in low latitudes adds 1.2-2.0 gigatonnes of carbon (GtC) to the atmosphere per year, while mid- and high-latitude forests remove 0.5-0.9 GtC/yr; and waste treatment, which adds carbon in the form of methane (CH4)."

Instead, the Government insist that onshore wind farms are the answer to meeting both our energy needs and our carbon dioxide emission targets, despite the fact that: • wind farms only generate energy when the wind is blowing, and then not too hard • they can't store energy, but only pass it on for immediate use, • they are sometimes opposed by local communities for sound environmental and economic reasons, and • they can only make a tiny contribution to achieving our renewables target .

In the UK, the parallel objective is to generate 10% of the UK’s electricity from renewable sources by 2010. Renewable electricity has become synonymous with CO2 reduction. However, the relationship between renewables and CO2 reduction in the power generation sector does not appear to have been examined in detail, and the likelihood, scale, and cost of emissions abatement from renewables is very poorly understood.

The purpose of this report is to analyse a wide range of technical literature that questions whether the renewables policy can achieve its goals of emissions reduction and power generation. To some, renewable energy has the simple and unanalysed virtue of being “green”. However, the reality of this quality is dependent on practical issues relating to electricity supply.

......In conclusion, it seems reasonable to ask why wind-power is the beneficiary of such extensive support if it not only fails to achieve the CO2 reductions required, but also causes cost increases in back-up, maintenance and transmission, while at the same time discouraging investment in clean, firm generation.

Denmark (population c. 5.4 million) is a leading pioneer in renewable energy. Since 1985 it has set up about 3,100 MW of wind capacity. Of this 420 MW are sited offshore (Nielsen, 2004), and more is planned for the near future (Bendtsen and Hedegaard, 2004). Over the same period many small gas- or bio-fuelled CHP plants were deployed, primarily for local district heating but also to produce electricity. Interest in solar power is also considerable.

A necessary step in any attempt to understand the outlook for US energy supply and demand

Comments by Glenn Schleede for The owners and members of Associated Electric Cooperative, Incorporated At their 2004 Annual Meeting in St. Louis, Missouri

Written by Douglas Giuffre, Jonathan Haughton, David Tuerck and John Barrett, this report analyses in economic terms the costs and benefits of a proposed 130 turbine wind plant in Nantucket Sound. It concludes that the economic costs substantially exceed the associated economic gains. This is a follow-up study to one published by Beacon Hill in October 2003 entitled "Blowing in the Wind: Offshore Wind and the Cape Cod Economy"

This position paper examines the profile of wind power, its impact on the network, security of supply and the quality of the energy delivered. It further deals with the reasons to establish certain technical requirements for the connection of wind power generation to the network.
Editor's Note: This is a worthwhile read in its entirety (attached pdf file). Selected extracts appear below.

Mr. Linderman's presentation to the Annual Conference of the National Energy Modeling System (NEMS)

Topics addressed:

(1)uncertainly over future natural gas prices

(2)the value of long-term fixed-price contracts for renewable energy

(3)what impact do renewables have on gas prices?

(4)what impact do high gas prices have on renewables?