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Energy Saving Trust publish small wind trials report
EST have carried out a year of testing on 57 building mounted and free standing domestic scale turbines in various locations across the UK. The report looks at how accurate wind speed prediction tools are, how the turbines perform in different locations and how their output compares with manufacturers data.
Key findings:
• Location is absolutely crucial, the best performing turbines were free standing in remote rural locations and exceeded generation estimates. The worst performing were poorly installed building mounted in urban areas, one turbine even used more than it generated over the year.
• Good wind resource is vital, at least 5m/s based on the Carbon Trust's Wind Yield Estimator or the MCS adjusted NOABL database. Many of the locations had significantly lower measured wind speed than was predicted by NOABL because NOABL doesn't take into account local obstructions.
• Currently manufacturers provide data that cannot be compared across models, and some power curves were actually inaccurate. The Microgeneration Certification Scheme has developed standards that require manufacturers to publish an accredited power curve, these should be in force by end of 2009 enabling consumers to navigate the market more effectively.
To download the report click here
For more information on whether a small wind turbine would be suitable for your site contact Renewable Energy 4 Devon through the Energy Saving Trust advice centre on 0800 512 012, or email energy@re4d.org