in 2008-9 glyndebourne erected a temporary 50m mast on mill plain to monitor meteorological conditions for a year, prior to erection of the turbine. the data collected showed lower wind levels than had been predicted at this location, perhaps because 2008-9 had lower wind levels than usual. the turbine was launched in january 2012, and generated 89% of the company's electricity requirements in the first 12 months, up to 31 january 2013.