@article{Weisser2024, author = {Weißer, Hannes}, title = {Relevance of Bird Strikes on Wind Turbines in Germany: A Review}, series = {Educational Journal of Renewable Energy Short Reviews}, journal = {Educational Journal of Renewable Energy Short Reviews}, doi = {10.25974/ren_rev_2024_13}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-176500}, pages = {79 -- 84}, year = {2024}, abstract = {As Germany aims to increase its utilization of wind power, the potential threat to bird populations due to this expansion is a controversial issue. This paper aims to collect data on the magnitude of bird strikes on wind turbines, review existing protective measures and explore innovative solutions. After a thorough examination of the literature, it was concluded that although the impact on bird populations is significant, it may be overemphasized in popular debates. This statement is not final as further research is necessary to assess the impact of bird strikes and explore new solutions. Comprehensive studies on this specific topic in Germany are limited, which makes a thorough evaluation challenging. While there are measures in place to protect species that may be negatively impacted, it is possible that these measures will not be adequate for all of them. While several innovative methods are under examination, progress in testing and implementation is slow. Lastly, an information problem was identified. Since the topic is highly politicized and polarizing, it is crucial to provide the public with accessible and reliable information on the discussed themes. This is currently not the case due to a lack of data and missing information campaigns.}, language = {en} } @article{Goray2023, author = {Goray, Lars}, title = {Life cycle energy analysis and ecological impact of wind turbines - a comparison of life cycle assessments}, series = {Educational Journal of Renewable Energy Short Reviews}, journal = {Educational Journal of Renewable Energy Short Reviews}, doi = {10.25974/ren_rev_2023_02}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-172613}, pages = {8 -- 15}, year = {2023}, abstract = {The use of wind power is rapidly expanding worldwide. It is important to examine the impact of wind turbines on the environment to see if they provide a net benefit and to identify potential for improving. Therefore life cycle assessments (LCA) of different wind turbine types are compared in this short review. The results are then shown side by side in tables for comparison. Overall the LCAs show that wind turbines compensate the required energy and emitted pollutants after approx. 6-16 months. The energy payback period (EPP) for 2 MW onshore wind turbines remained roughly the same since 2009 with approximately 7 months. Onshore wind turbines have a higher impact due to emissions but a shorter EPP than offshore wind turbines. The estimated service life of 20 years should be maximized to ensure a high energy yield ratio. The biggest impact on the environment results from the processes to provide the building material e.g. steel and cement. That impact could be reduced by 20 \% if recycled steel would be used. It is shown that wind power is one of the cleanest energy sources. But further investigations in material processing and recycling are important to improve the eco-balance of wind turbines.}, language = {en} }