Your article "Campaigners step up fight against wind turbine" (The Argus, March 12) misrepresents the information our information officer, Matthew Slack, provided to Chris Bowersby.

Mr Slack's exact words were "commercial wind farm developers typically look for an average wind speed of at least 7 metres per second".

This does not mean the Centre for Alternative Technology (CAT) regards sites of lower wind speed to be unviable.

There are many factors which affect the commercial viability of wind projects. By reusing secondhand machines, the community-owned turbines at Machynlleth in Wales make sense in an average wind speed of less than 6m/s.

The average wind speed at the proposed Glyndebourne site, according to the Department of Trade and Industry's freely available data, is 6.8m/s, certainly high enough to justify a more detailed feasibility study.

It is usual to monitor the wind speed at a proposed turbine location for a year or more in order to obtain an accurate assessment of the wind resource and therefore the potential for power generation.

Jessa Latona
Centre for Alternative Technology,
Machynlleth, Powys, Wales