transportation of assembled turbine to the customer; and materials and production of a mounting station for the turbine.22 During the lifetime operation of the turbine, the energy produced by the device is assumed to offset the conventional energy that would otherwise be required to be obtained from the centralised UK electricity system. The authors assume a specific ‘energy mix’ that is typical of the UK grid.23 They consider a number of ‘wind condition’ scenarios, and find that, over the life cycle of the turbine, the device has a positive environmental impact for all scenarios except for the poorestof wind conditions. Aside from the available wind resource, the authors find that the geographical positioning of the turbine and the use of recycled materials or not for the manufacture of the device are particularly important factors in determining the environmental impact and overall environmental benefits of the device.