Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Letters praisee


Following your useful review of wind power I was disappointed to see some incorrect comments in the letters pages.

First, wind turbines have an energy 'payback' of only 6-9 months, (ie the time required to generate all the energy used in manufacture), against a design life of over 20 years.

Secondly it is not true that wind turbines require pitch control and low rotor speeds to avoid structural failure. The large modern wind turbine is designed for fail-safe survival to winds of around 240km/hr and can be uprated for extreme locations. Also the rotor speed is optimised for efficiency and cost so that a modern 65m diameter, three blade rotor will turn at a leisurely and quiet 20rpm.

In Germany, for example, installed capacity of these 'conventional' wind turbines will reach 8,000MW this year and the world market up to 2006 is put at £30bn. Wind power is not the only solution to our future energy needs, but it will be a major player. The UK must not lag behind.

Peter Hinson (M), EMPSquared Consultants, 30 The Fairway, Burnham, South Bucks, SL1 8DS

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.