We also learned that Financial calculations are not for lovers of certainty or for the faint of heart. I have become increasingly tired of comments and discussion around the web in which random people make even unfounded claims regarding the profit and cost aspects of wind power generation. Most all data provided is sourced from national and government resources. The costs for transmission are extra and not addressed. These figures vary by region, state, regulated versus non-regulated, and a number of other things. However, for the calculations here, I will use 7. Because we are a utility, we expect to sell power for 7.
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Read on. US researchers have carried out an environmental lifecycle assessment of 2-megawatt wind turbines mooted for a large wind farm in the US Pacific Northwest. Writing in the International Journal of Sustainable Manufacturing , they conclude that in terms of cumulative energy payback, or the time to produce the amount of energy required of production and installation, a wind turbine with a working life of 20 years will offer a net benefit within five to eight months of being brought online. Wind turbines are frequently touted as the answer to sustainable electricity production especially if coupled to high-capacity storage for times when the wind speed is either side of their working range. They offer a power source that has essentially zero carbon emissions. Coupled lifecycle cost and environmental assessment in terms of energy use and emissions of manufacturing, installation, maintenance and turbine end-of-life processing seems to be limited in the discussions for and against these devices. The pair has carried out a life cycle assessment LCA of 2MW wind turbines in order to identify the net environmental impact of the production and use of such devices for electricity production. An LCA takes into account sourcing of key raw materials steel, copper, fiberglass, plastics, concrete, and other materials , transport, manufacturing, installation of the turbine, ongoing maintenance through its anticipated two decades of useful life and, finally, the impacts of recycling and disposal at end-of-life. Their analysis shows that the vast majority of predicted environmental impacts would be caused by materials production and manufacturing processes. However, the payback for the associated energy use is within about 6 months, the team found. It is likely that even in a worst case scenario, lifetime energy requirements for each turbine will be subsumed by the first year of active use. Thus, for the 19 subsequent years, each turbine will, in effect, power over households without consuming electricity generated using conventional energy sources.
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Haapala, K. Sustainable Manufacturing, Vol. The problem here is the assumption that a wind turbine is the equivalent of a conventional coal or nuclear power plant.
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By Christopher Booker. Scarcely a week goes by when I am not asked by a local campaign group to publicise their fight against some scheme to build one of those increasingly hated wind farms. So many developers are now piling in on the subsidy bonanza that, according to a survey by the Western Morning News, in Cornwall and Devon alone no fewer than such schemes are now being discussed or going through the planning process. A ploy often used by developers to buy off opposition to their proposals is to offer cash to fund local community projects. But few campaign groups are aware just how derisory the sums often are, compared with the gains the developers stand to make. I was recently approached, for instance, by Felix Williams, mayor of the little Suffolk market town of Eye, over a plan for two huge 3. Although the scheme was almost unanimously opposed by the town council, it was approved by Mid-Suffolk district council, on the grounds that it was necessary to meet the local target set by the Government, itself determined by our commitment to the EU to generate 32 per cent of our electricity from renewables by , mainly from tens of thousands of new turbines. What Mayor Williams wished to know was how this compares with the profits they might make from it. The developers specify the capacity of their turbines — which will be taller than the spire of Salisbury Cathedral — as 6.
100% on-site consumption, annual electricity price rise of 3%
In many parts of the country, wind turbines have been or will be installed on farm land to produce renewable electric energy for the local utility companies. Farmers who allow wind turbines to be built on their land are compensated by the utility company for the use of the land. A farmer who signs a contract for the installation of a wind turbine on his farm land will typically receive two types of payments. The initial payments are a lease of the development right for the land. The leasing company locks up the right for a period of three to five years to start building wind turbines on the land. A report from North Dakota State University reports this option lease pays two to ten dollars per acre to the farmer. Once the company starts building a wind turbine, the lease changes to payments based on the electricity produced by the turbine. The payment to a farmer for a completed wind turbine can be based on one criteria or a combination of several.
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The power rating pretty much tells you how big the turbine is so that you can get an idea of how much energy it can produce. They are due to be phased out entirely, but if you want to reduce your energy bills and create energy in an environmentally friendly way, wind turbines are still a great option. Then, multiply the answer by the length of the rotor blade and the speed of the wind. But more and more wind farms are cropping up in Minnesota, Illinois, Indiana, Oregon, Colorado and Washington, so relocating to any one of these states could increase your chances of employment.
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The turbine also contains a gear system that it uses to accelerate the speed at which the blades rotate. They are due to be phased out entirely, but if you wnid to reduce your energy bills and create energy in an environmentally friendly way, wind turbines are still a great option. Texas, Iowa and California lead the pack. The U. Based in Minneapolis, Minn. Another factor that contributes to how much power does a wind turbine produce is altitude.
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The Earth is surrounded by the atmosphere, which is made up of air. Air is a mixture of gas, and solid and liquid particles. Energy from the sun heats up the atmosphere and the Earth unevenly. Cold air contains more air particles than warm air.
Developers of wind farms offer ‘sweeteners’ to local communities, but they may be tiny compared to the revenues.
Cold air is therefore heavier and sinks down through the atmosphere, creating high pressure areas. Warm air rises through the atmosphere, creating low pressure areas. The air tries to balance out the low and high pressure areas — air particles move from areas of high pressure cold air to areas of low pressure warm air. This movement of air is known as the wind.
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