INDUSTRY ARTICLE
Figure 3: The measured data show pronounced variance over the course of the year. Measured wind speeds were highest in winter and lower in summer. Given this, performance of long- term measurements over one complete year or measurements during the transition between the seasons are important to obtain valid data of the potential yield.
This finding is also highly significant for other sites, as measurements (using methods such as laser-aided LIDAR systems) often only extend over a few months for cost reasons. However, the evaluation of the measured wind data
WILL THE WIND FARM BE PROFITABLE? The test wind mast supplies significant information on the wind conditions in the forest areas of lower mountain ranges in general. So far, there have been only a few studies on this subject in Germany.
However, in addition to these findings, the data also answer a very specific question, i.e. whether profitable operation of a wind farm is possible in the forest region of Hessenreuther Wald.
shows that measurements that are conducted only in summer or winter do not deliver reliable, representative results and may cause the potential of the site to be significantly over- or underestimated in this case.
This is the issue facing Natural Energy Solutions GmbH & Co KG, Erbendorf, the local energy initiative which plans to build a wind farm there. However, for the multi-million-euro project to be realised successfully, profitability and cost-effectiveness must be ensured.
As is often the case, this quickly led to the question of whether wind conditions and thus ultimately also the potential energy yield at the site, would be sufficient. After all, large turbines and state- of-the-art technology also mean high purchase and installation costs. However, in this context the complex topography of the low mountain region is far more important. Extensive commercial forests cover the surrounding valleys, hills and mountains, so that the relief greatly influences the air currents at the site.
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www.windenergynetwork.co.uk
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